记录模拟委托异常恢复的Linux配套验收

This reverts commit 5d0823c060bfd2a42a3f86a381e874004ab7f6af.

Cargo.toml

@@ -1,6 +1,7 @@
 [workspace]
 members = [
     "crates/fidc-core",
+    "crates/fidc-signal-client",
 ]
 resolver = "2"
 
@@ -11,6 +12,8 @@ version = "0.1.0"
 authors = ["OpenAI Codex"]
 
 [workspace.dependencies]
+rust_decimal = { version = "=1.39.0", features = ["serde-with-str"] }
+sha2 = "=0.10.9"
 ahash = "=0.8.12"
 chrono = { version = "=0.4.44", features = ["serde"] }
 indexmap = { version = "=2.11.4", features = ["serde"] }
@@ -18,5 +21,5 @@ reqwest = { version = "=0.12.24", default-features = false, features = ["json",
 rayon = "=1.12.0"
 rhai = { version = "=1.23.6", features = ["sync"] }
 serde = { version = "=1.0.228", features = ["derive"] }
-serde_json = "=1.0.145"
+serde_json = { version = "=1.0.145", features = ["float_roundtrip"] }
 thiserror = "=2.0.18"

README.md

@@ -1,7 +1,19 @@
+<p><img src="assets/brand/fiPandaWithTitle.png" alt="FiPanda" width="144" height="144"></p>
+
 # fidc-backtest-engine
 
 面向中国 A 股和期货策略的 Rust 回测核心。仓库目标是提供平台自有的策略 DSL、执行模型、撮合模型和结果分析能力，最终由 `fidc-backtest-service` 对外提供策略运行服务。
 
+## Runtime position exposure schedule
+
+`strategy_spec.runtimeExpressions.risk.positionExposureSchedule` accepts dated
+`effectiveDate` plus `targetExposureBps` points. The platform expression strategy
+uses the latest point whose date is not later than the current execution date and
+otherwise keeps the strategy's normal `exposureExpr`. This contract is intended for
+audited runtime controls replayed by paper/live shadow reconciliation; it is not a
+market-data signal and does not change selection, pricing, fees, or execution-day
+risk checks.
+
 ## 当前能力
 
 - 日频和分钟执行价策略生命周期与确定性回放。
@@ -75,7 +87,7 @@
 - `selection.market_cap_band(...)` 动态市值带。
 - `filter.stock_expr(...)` 任意指标、因子和组合选股。
 - `ordering.rank_by(...)` 与 `ordering.rank_expr(...)` 排序。
-- `allocation.buy_scale(...)` 动态买入资金比例。
+- `allocation.buy_scale(...)` 相对等权槽位的个股资金倍率；显式权重可以大于 `1.0`，组合总仓位仍由 `risk.index_exposure(...)` 和严格资金预算控制。
 - `risk.stop_loss(...)`、`risk.take_profit(...)` 多条件止盈止损。
 - `order.*`、`cancel.*`、`update_universe(...)`、`subscribe(...)` 显式交易动作。
 
@@ -89,6 +101,8 @@ Source Lake 日线成交量保留原始可用性合同：源 `volume=null` 与
 
 `holdUntilExit=true` 与 `stopTakeReferencePriceMode=signal_day_post_adjusted_close` 组合表示持久模型组合语义：股票进入模型目标后即记录信号日和后复权参考价，不以买单是否成交为前提。涨停、停牌或其他执行风控导致买单未成交时，模型成员仍占用目标槽位、每天累计模型持有日并继续生成目标仓位；达到止盈、止损或最大模型持有期后才从模型组合移除。实际订单仍由成交日风控独立决定，不得用实际持仓集合覆盖模型目标集合。
 
+`targetPortfolioDaily=true` 时，每只股票的默认目标金额固定为 `target_budget / selection_limit * buy_scale`，候选不足、缺行情或风控拒绝产生的剩余资金保留为现金，不得自动归一到满仓。止盈、止损或最大持有期触发后，标的从活动目标顺序移除；卖出未完成时继续占用仓位槽且不得反向补买，成功释放的槽位只能由同一决策时点已排序且通过策略条件的后续候选补充。只有显式设置 `redistributeTargetWeightsAfterExit=true` 才在可用目标间重新分配权重，只有显式设置 `reenterExitedTargets=true` 才保留退出标的供后续重新入场；两个开关互相独立，默认都为 `false`。
+
 ## 内置微盘策略
 
 `OmniMicroCapStrategy` 是平台内置的微盘轮动策略，用于 demo、性能验证和策略迁移基线：

assets/brand/README.md

@@ -0,0 +1,11 @@
+# FiPanda 品牌资源
+
+FIDC 系列共用用户提供的两张原始透明图片，不重绘、不裁切、不染色。
+
+- `fiPandaWithTitle.png`：带标题版，登录页、项目首页、独立报告使用。
+- `fipanda.png`：无标题版，顶部导航、小尺寸标识和系统图标使用。
+- `favicon-32.png`：由无标题版等比生成，供浏览器标签页使用。
+
+导航图标建议 28–42px；带标题版建议 96–160px。始终等比完整显示，保留透明背景，不为 Logo 增加大块容器或改变业务页面主题。项目名称、权限、交易合同与内部 FIDC 标识不因品牌图片变更而重命名。
+
+原图保存在 `omniquant/assets/brand/source/`；`manifest.json` 记录原图和显示资源的 SHA-256。需要更新时，在完整工作区运行 `node omniquant/scripts/sync-fipanda-branding.mjs`，统一生成八个仓库及可下载策略技能包的资源，禁止分别维护不同版本。

assets/brand/manifest.json

@@ -0,0 +1,38 @@
+{
+  "schema": "fidc.fipanda-brand/v1",
+  "brand": "FiPanda",
+  "sourceRepository": "omniquant",
+  "sources": [
+    {
+      "file": "fipanda.png",
+      "sha256": "ff7dc0677b7d9c8dc6d008d3391f27fd583e3de35560dab021c1e2f8f2c464e5"
+    },
+    {
+      "file": "fiPandaWithTitle.png",
+      "sha256": "01bfb6acb36830d9b1ce6f7dc8c718977d43af44572ee6a26991d6c6aa2847d6"
+    }
+  ],
+  "assets": [
+    {
+      "file": "fipanda.png",
+      "source": "fipanda.png",
+      "pixels": 192,
+      "usage": "navigation, compact icons, apple-touch-icon",
+      "sha256": "450aad3506ec3c67624b7705f4d8f851a9102fe950e7671a06fb1203dc1d9cf7"
+    },
+    {
+      "file": "fiPandaWithTitle.png",
+      "source": "fiPandaWithTitle.png",
+      "pixels": 384,
+      "usage": "login, project README, standalone reports",
+      "sha256": "d33846b3687ea69d43b4a1f17ceeb02662bd25f26fabc4c86c25b3475f20dede"
+    },
+    {
+      "file": "favicon-32.png",
+      "source": "fipanda.png",
+      "pixels": 32,
+      "usage": "browser tab icon",
+      "sha256": "ec3d7783457db284d46ae6e27833685203838637a7d68946ff85402725f8e420"
+    }
+  ]
+}

crates/fidc-core/Cargo.toml

@@ -6,6 +6,8 @@ license.workspace = true
 authors.workspace = true
 
 [dependencies]
+compact_str = { version = "=0.10.0", features = ["serde"] }
+rust_decimal.workspace = true
 ahash.workspace = true
 chrono.workspace = true
 indexmap.workspace = true
@@ -13,4 +15,6 @@ rayon.workspace = true
 rhai.workspace = true
 serde.workspace = true
 serde_json.workspace = true
+sha2.workspace = true
 thiserror.workspace = true
+ta-lib = { git = "https://github.com/TA-Lib/ta-lib.git", rev = "dd5a90259a3f9e04e2da9f38bf0719a841b40108" }

crates/fidc-core/examples/factor-event-kernel.rs

@@ -0,0 +1,42 @@
+use fidc_core::factor_events::{self, Expr, Frame};
+use serde::Deserialize;
+use serde_json::{Value, json};
+use std::io::{self, Read};
+
+#[derive(Deserialize)]
+#[serde(deny_unknown_fields)]
+struct Request {
+    expressions: std::collections::BTreeMap<String, Expr>,
+    frame: Frame,
+}
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let mut input = String::new();
+    io::stdin().read_to_string(&mut input)?;
+    let output = if input.trim().is_empty() {
+        factor_events::catalog()
+    } else if serde_json::from_str::<Value>(&input)?.get("rank_history").is_some() {
+        #[derive(Deserialize)]
+        #[serde(deny_unknown_fields)]
+        struct Rank { dates:Vec<chrono::NaiveDate>, universe:Vec<String>, values:std::collections::BTreeMap<String,Vec<Option<f64>>> }
+        let value:Value=serde_json::from_str(&input)?;
+        let request:Rank=serde_json::from_value(value["rank_history"].clone())?;
+        json!({"result":fidc_core::factor_cross_section::rank_history(&request.dates,&request.universe,&request.values)?})
+    } else {
+        let request: Request = serde_json::from_str(&input)?;
+        let results = request
+            .expressions
+            .iter()
+            .map(|(id, expr)| {
+                let result = match factor_events::evaluate(expr, &request.frame) {
+                    Ok(v) => json!({"result":v}),
+                    Err(e) => json!({"error":e}),
+                };
+                (id.clone(), result)
+            })
+            .collect::<std::collections::BTreeMap<String, Value>>();
+        json!({"contract":factor_events::CONTRACT,"results":results,"read_only":true})
+    };
+    println!("{}", serde_json::to_string(&output)?);
+    Ok(())
+}

crates/fidc-core/examples/market-event-kernel.rs

@@ -0,0 +1,9 @@
+use std::io::{self, Read};
+fn main() {
+    let mut input=String::new();io::stdin().read_to_string(&mut input).unwrap();
+    let request=serde_json::from_str(&input).unwrap();
+    match fidc_core::market_event_context::aggregate(request) {
+        Ok(value)=>println!("{}",serde_json::to_string(&value).unwrap()),
+        Err(error)=>{eprintln!("{error}");std::process::exit(1);}
+    }
+}

crates/fidc-core/examples/session-event-kernel.rs

@@ -0,0 +1,26 @@
+use std::io::Read;
+fn main() {
+    let mut input = String::new();
+    std::io::stdin().read_to_string(&mut input).unwrap();
+    let value: serde_json::Value = serde_json::from_str(&input).unwrap();
+    let spec: fidc_core::daily_patterns::PatternSpec =
+        serde_json::from_value(value["spec"].clone()).unwrap();
+    let bars: Vec<fidc_core::session_events::MinuteBar> =
+        serde_json::from_value(value["bars"].clone()).unwrap();
+    let result = fidc_core::session_events::evaluate(
+        &spec.validate().unwrap(),
+        value["symbol"].as_str().unwrap(),
+        &bars,
+        serde_json::from_value(value["decision_at"].clone()).unwrap(),
+    );
+    match result {
+        Ok(row) => println!(
+            "{}",
+            serde_json::json!({"contract":fidc_core::session_events::CONTRACT,"row":row,"read_only":true,"source_evidence_verified":false})
+        ),
+        Err(error) => {
+            eprintln!("{error}");
+            std::process::exit(1);
+        }
+    }
+}

crates/fidc-core/examples/signal-book-kernel.rs

@@ -0,0 +1,15 @@
+use std::io::{Read, Write};
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let mut raw=Vec::new();
+    std::io::stdin().take(64*1024*1024+1).read_to_end(&mut raw)?;
+    if raw.len()>64*1024*1024 {return Err("signal_book_transport_limit".into());}
+    let book:fidc_core::signal_contract::SignalBook=serde_json::from_slice(&raw)?;
+    let version=book.content_sha256()?;
+    let validated=book.validate()?;
+    let result=serde_json::json!({"schema":fidc_core::signal_contract::SIGNAL_BOOK_SCHEMA,
+        "versionSha256":version,"symbols":validated.symbols(),
+        "onlineAllowed":validated.require_observed().is_ok()});
+    std::io::stdout().write_all(serde_json::to_string(&result)?.as_bytes())?;
+    Ok(())
+}

crates/fidc-core/src/broker/tests/algorithm_clock.rs

@@ -0,0 +1,778 @@
+use super::*;
+
+fn time(minute: u32) -> NaiveTime {
+    NaiveTime::from_hms_opt(10, minute, 0).unwrap()
+}
+
+fn data(quotes: &[(u32, f64, u32)]) -> DataSet {
+    data_with_snapshot(quotes, limit_test_snapshot())
+}
+
+fn data_with_snapshot(quotes: &[(u32, f64, u32)], snapshot: DailyMarketSnapshot) -> DataSet {
+    DataSet::from_components_with_actions_and_quotes(
+        vec![limit_test_instrument()],
+        vec![snapshot],
+        vec![],
+        vec![limit_test_candidate(true, true)],
+        vec![limit_test_benchmark()],
+        vec![],
+        quotes
+            .iter()
+            .map(|&(minute, price, volume)| {
+                let mut quote = limit_test_quote(price, price, price);
+                quote.timestamp = quote.date.and_time(time(minute));
+                quote.volume_delta = u64::from(volume);
+                quote.amount_delta = price * f64::from(volume);
+                quote.bid1_volume = u64::from(volume / 100);
+                quote.ask1_volume = u64::from(volume / 100);
+                quote
+            })
+            .collect(),
+    )
+    .unwrap()
+}
+
+fn broker() -> BrokerSimulator<ChinaAShareCostModel, ChinaEquityRuleHooks> {
+    BrokerSimulator::new(
+        ChinaAShareCostModel::default()
+            .with_commission_rate(0.0003)
+            .with_minimum_commission(5.),
+        ChinaEquityRuleHooks,
+    )
+    .with_matching_type(MatchingType::MinuteLast)
+    .with_execution_price_field(PriceField::Last)
+    .with_intraday_execution_start_time(time(0))
+    .with_volume_limit(true)
+    .with_volume_percent(0.25)
+    .with_liquidity_limit(false)
+    .with_inactive_limit(false)
+    .with_strict_value_budget(true)
+}
+
+fn intent(style: AlgoOrderStyle, value: f64) -> StrategyDecision {
+    StrategyDecision {
+        order_intents: vec![OrderIntent::AlgoValue {
+            symbol: "000001.SZ".into(),
+            value,
+            style,
+            start_time: Some(time(0)),
+            end_time: Some(time(10)),
+            reason: "clock-algorithm".into(),
+        }],
+        ..Default::default()
+    }
+}
+
+fn step(
+    broker: &BrokerSimulator<ChinaAShareCostModel, ChinaEquityRuleHooks>,
+    portfolio: &mut PortfolioState,
+    data: &DataSet,
+    minute: u32,
+    decision: &StrategyDecision,
+) -> BrokerExecutionReport {
+    broker
+        .execute_between(
+            limit_test_snapshot().date,
+            portfolio,
+            data,
+            decision,
+            Some(time(minute)),
+            Some(time(minute)),
+        )
+        .unwrap()
+}
+
+#[test]
+fn twap_clock_preserves_quantity_prices_fees_budget_and_parent_order() {
+    let data = data(&[
+        (0, 10., 4_000),
+        (2, 10.1, 4_000),
+        (5, 10.2, 4_000),
+        (10, 10.3, 4_000),
+    ]);
+    let decision = intent(AlgoOrderStyle::Twap, 10_000.);
+    let mut synchronous_account = PortfolioState::new(20_000.);
+    let reference = broker()
+        .execute(
+            limit_test_snapshot().date,
+            &mut synchronous_account,
+            &data,
+            &decision,
+        )
+        .unwrap();
+    let broker = broker();
+    let mut account = PortfolioState::new(20_000.);
+    let mut fills = Vec::new();
+    let mut events = Vec::new();
+    let empty = StrategyDecision::default();
+    for minute in [0, 2, 5, 10] {
+        let batch = step(
+            &broker,
+            &mut account,
+            &data,
+            minute,
+            if minute == 0 { &decision } else { &empty },
+        );
+        assert!(
+            batch
+                .fill_events
+                .iter()
+                .all(|fill| fill.execution_timestamp.unwrap().time() <= time(minute))
+        );
+        fills.extend(batch.fill_events);
+        events.extend(batch.order_events);
+    }
+    let canonical = |rows: &[crate::events::FillEvent]| {
+        rows.iter()
+            .map(|fill| {
+                (
+                    fill.quantity,
+                    fill.price.to_bits(),
+                    fill.commission.to_bits(),
+                    fill.stamp_tax.to_bits(),
+                    fill.transfer_fee.to_bits(),
+                    fill.execution_timestamp,
+                    fill.order_id,
+                )
+            })
+            .collect::<Vec<_>>()
+    };
+    assert_eq!(canonical(&fills), canonical(&reference.fill_events));
+    assert_eq!(account.cash(), synchronous_account.cash());
+    assert_eq!(fills.iter().map(|fill| fill.quantity).sum::<u32>(), 900);
+    assert_eq!(fills.iter().map(|fill| fill.commission).sum::<f64>(), 5.);
+    assert!(fills.iter().map(|fill| -fill.net_cash_flow).sum::<f64>() <= 10_000.);
+    assert!(events.iter().all(|event| event.order_id == Some(1)));
+    assert_eq!(events.last().unwrap().status, OrderStatus::Filled);
+    assert!(broker.open_order_views().is_empty());
+}
+
+#[test]
+fn partial_algorithm_cancel_releases_reservation_and_never_executes_the_remainder() {
+    let data = data(&[
+        (0, 10., 4_000),
+        (2, 10., 4_000),
+        (5, 10., 4_000),
+        (10, 10., 4_000),
+    ]);
+    let broker = broker();
+    let mut account = PortfolioState::new(20_000.);
+    step(
+        &broker,
+        &mut account,
+        &data,
+        0,
+        &intent(AlgoOrderStyle::Twap, 10_000.),
+    );
+    assert_eq!(broker.open_order_views()[0].reserved_cash, Some(10_000.));
+    let partial = step(
+        &broker,
+        &mut account,
+        &data,
+        2,
+        &StrategyDecision::default(),
+    );
+    assert_eq!(
+        partial
+            .fill_events
+            .iter()
+            .map(|fill| fill.quantity)
+            .sum::<u32>(),
+        100
+    );
+    let working = broker.open_order_views();
+    assert_eq!(working[0].order_id, 1);
+    assert_eq!(working[0].filled_quantity, 100);
+    assert_eq!(
+        working[0].reserved_cash,
+        Some(10_000. + partial.fill_events[0].net_cash_flow)
+    );
+    let cancel = step(
+        &broker,
+        &mut account,
+        &data,
+        3,
+        &StrategyDecision {
+            order_intents: vec![OrderIntent::CancelAll {
+                reason: "explicit-user-cancel".into(),
+            }],
+            ..Default::default()
+        },
+    );
+    assert!(cancel.fill_events.is_empty());
+    assert_eq!(
+        cancel.order_events.last().unwrap().status,
+        OrderStatus::Canceled
+    );
+    assert_eq!(cancel.order_events.last().unwrap().filled_quantity, 100);
+    assert!(broker.open_order_views().is_empty());
+    assert!(
+        step(
+            &broker,
+            &mut account,
+            &data,
+            10,
+            &StrategyDecision::default()
+        )
+        .fill_events
+        .is_empty()
+    );
+    assert_eq!(account.position("000001.SZ").unwrap().quantity, 100);
+}
+
+#[test]
+fn algorithm_expiry_without_a_quote_does_not_reuse_old_liquidity() {
+    let data = data(&[(0, 10., 4_000), (2, 10., 4_000)]);
+    let broker = broker();
+    let mut account = PortfolioState::new(20_000.);
+    step(
+        &broker,
+        &mut account,
+        &data,
+        0,
+        &intent(AlgoOrderStyle::Twap, 10_000.),
+    );
+    step(
+        &broker,
+        &mut account,
+        &data,
+        2,
+        &StrategyDecision::default(),
+    );
+    assert_eq!(
+        broker.next_day_order_expiry(limit_test_snapshot().date),
+        Some(time(10))
+    );
+    let terminal = step(
+        &broker,
+        &mut account,
+        &data,
+        10,
+        &StrategyDecision::default(),
+    );
+    assert!(terminal.fill_events.is_empty());
+    assert_eq!(
+        terminal.order_events.last().unwrap().status,
+        OrderStatus::Expired
+    );
+    assert_eq!(terminal.order_events.last().unwrap().filled_quantity, 100);
+    assert!(
+        terminal
+            .process_events
+            .iter()
+            .any(|event| event.detail.contains("Expired")),
+        "{:?}",
+        terminal.process_events
+    );
+    assert!(broker.open_order_views().is_empty());
+}
+
+#[test]
+fn separate_buy_cannot_spend_the_working_algorithms_cash_budget() {
+    let data = data(&[
+        (0, 10., 4_000),
+        (1, 10., 4_000),
+        (2, 10., 4_000),
+        (10, 10., 4_000),
+    ]);
+    let broker = broker();
+    let mut account = PortfolioState::new(11_000.);
+    step(
+        &broker,
+        &mut account,
+        &data,
+        0,
+        &intent(AlgoOrderStyle::Twap, 10_000.),
+    );
+    let other = step(
+        &broker,
+        &mut account,
+        &data,
+        1,
+        &StrategyDecision {
+            order_intents: vec![OrderIntent::Shares {
+                symbol: "000001.SZ".into(),
+                quantity: 1_000,
+                reason: "separate-buy".into(),
+            }],
+            ..Default::default()
+        },
+    );
+    assert!(
+        other.fill_events.is_empty(),
+        "cash reserved for order 1 was spent: {:?}",
+        other.fill_events
+    );
+    let final_batch = step(
+        &broker,
+        &mut account,
+        &data,
+        10,
+        &StrategyDecision::default(),
+    );
+    assert!(
+        final_batch
+            .fill_events
+            .iter()
+            .all(|fill| fill.order_id == Some(1))
+    );
+    assert_eq!(account.position("000001.SZ").unwrap().quantity, 900);
+    assert!(account.cash() >= 1_000.);
+}
+
+#[test]
+fn changing_the_later_daily_close_does_not_resize_an_algorithm_submitted_now() {
+    let quotes = [(0, 10., 4_000), (2, 10.1, 4_000), (10, 10.2, 4_000)];
+    let mut changed = limit_test_snapshot();
+    changed.close = 100.;
+    changed.last_price = 100.;
+    let run = |data: DataSet| {
+        let broker = broker();
+        let mut account = PortfolioState::new(20_000.);
+        let initial = step(
+            &broker,
+            &mut account,
+            &data,
+            0,
+            &intent(AlgoOrderStyle::Twap, 10_000.),
+        );
+        assert!(initial.fill_events.is_empty());
+        let quantity = broker.open_order_views()[0].requested_quantity;
+        let final_batch = step(
+            &broker,
+            &mut account,
+            &data,
+            10,
+            &StrategyDecision::default(),
+        );
+        (
+            quantity,
+            final_batch
+                .fill_events
+                .iter()
+                .map(|fill| {
+                    (
+                        fill.quantity,
+                        fill.price.to_bits(),
+                        fill.net_cash_flow.to_bits(),
+                    )
+                })
+                .collect::<Vec<_>>(),
+        )
+    };
+    assert_eq!(
+        run(data(&quotes)),
+        run(data_with_snapshot(&quotes, changed))
+    );
+}
+
+#[test]
+fn vwap_clock_preserves_cash_costs_and_does_not_spend_future_volume() {
+    let data = data(&[
+        (0, 10., 400),
+        (2, 10., 800),
+        (5, 10., 1_200),
+        (10, 10., 4_000),
+    ]);
+    let decision = intent(AlgoOrderStyle::Vwap, 10_000.);
+    let mut synchronous_account = PortfolioState::new(20_000.);
+    let reference = broker()
+        .execute(
+            limit_test_snapshot().date,
+            &mut synchronous_account,
+            &data,
+            &decision,
+        )
+        .unwrap();
+    let broker = broker();
+    let mut account = PortfolioState::new(20_000.);
+    let empty = StrategyDecision::default();
+    let mut filled = 0;
+    let mut commission = 0.;
+    for (minute, expected) in [(0, 100), (2, 300), (5, 600), (10, 900)] {
+        let batch = step(
+            &broker,
+            &mut account,
+            &data,
+            minute,
+            if minute == 0 { &decision } else { &empty },
+        );
+        filled += batch
+            .fill_events
+            .iter()
+            .map(|fill| fill.quantity)
+            .sum::<u32>();
+        commission += batch
+            .fill_events
+            .iter()
+            .map(|fill| fill.commission)
+            .sum::<f64>();
+        assert_eq!(filled, expected);
+        assert!(batch.fill_events.iter().all(|fill| fill.order_id == Some(1)
+            && fill.execution_timestamp.unwrap().time() <= time(minute)));
+    }
+    assert_eq!(account.cash(), synchronous_account.cash());
+    assert_eq!(
+        commission,
+        reference
+            .fill_events
+            .iter()
+            .map(|fill| fill.commission)
+            .sum::<f64>()
+    );
+    assert!(broker.open_order_views().is_empty());
+}
+
+#[test]
+fn global_vwap_matching_keeps_the_same_working_order_between_clock_ticks() {
+    let data = data(&[(0, 10., 400), (2, 10., 400), (10, 10., 4_000)]);
+    let broker = broker().with_matching_type(MatchingType::Vwap);
+    let mut account = PortfolioState::new(20_000.);
+    let first = step(
+        &broker,
+        &mut account,
+        &data,
+        0,
+        &StrategyDecision {
+            order_intents: vec![OrderIntent::Shares {
+                symbol: "000001.SZ".into(),
+                quantity: 900,
+                reason: "configured-vwap".into(),
+            }],
+            ..Default::default()
+        },
+    );
+    assert_eq!(
+        first
+            .fill_events
+            .iter()
+            .map(|fill| fill.quantity)
+            .sum::<u32>(),
+        100
+    );
+    assert_eq!(
+        broker.open_order_views().len(),
+        1,
+        "{:?}",
+        first.order_events
+    );
+    let second = step(
+        &broker,
+        &mut account,
+        &data,
+        2,
+        &StrategyDecision::default(),
+    );
+    assert_eq!(second.fill_events[0].quantity, 100);
+    assert_eq!(second.fill_events[0].order_id, Some(1));
+    let final_batch = step(
+        &broker,
+        &mut account,
+        &data,
+        10,
+        &StrategyDecision::default(),
+    );
+    assert_eq!(final_batch.fill_events[0].quantity, 700);
+    assert_eq!(final_batch.fill_events[0].order_id, Some(1));
+    assert!(broker.open_order_views().is_empty());
+}
+
+#[test]
+fn algorithm_sell_honors_t_plus_one_and_keeps_original_quantity_after_partial_fills() {
+    let data = data(&[(0, 10., 400), (2, 10., 800), (10, 10., 4_000)]);
+    let date = limit_test_snapshot().date;
+    for acquired_today in [false, true] {
+        let broker = broker();
+        let mut account = PortfolioState::new(20_000.);
+        account.position_mut("000001.SZ").buy(
+            if acquired_today {
+                date
+            } else {
+                date.pred_opt().unwrap()
+            },
+            1_000,
+            10.,
+        );
+        let decision = intent(AlgoOrderStyle::Vwap, -10_000.);
+        let mut fills = Vec::new();
+        let mut events = Vec::new();
+        let empty = StrategyDecision::default();
+        for minute in [0, 2, 10] {
+            let batch = step(
+                &broker,
+                &mut account,
+                &data,
+                minute,
+                if minute == 0 { &decision } else { &empty },
+            );
+            fills.extend(batch.fill_events);
+            events.extend(batch.order_events);
+        }
+        assert_eq!(
+            fills.iter().map(|fill| fill.quantity).sum::<u32>(),
+            if acquired_today { 0 } else { 1_000 }
+        );
+        assert!(events.iter().all(|event| event.order_id == Some(1)));
+        if !acquired_today {
+            assert_eq!(events.last().unwrap().status, OrderStatus::Filled);
+            assert_eq!(events.last().unwrap().requested_quantity, 1_000);
+            assert_eq!(events.last().unwrap().filled_quantity, 1_000);
+        }
+        assert!(broker.open_order_views().is_empty());
+    }
+}
+
+#[test]
+fn an_explicit_ioc_or_fok_does_not_become_a_persistent_algorithm() {
+    let data = data(&[(0, 10., 400), (2, 10., 4_000), (10, 10., 4_000)]);
+    for tif in [
+        OrderTimeInForce::Ioc,
+        OrderTimeInForce::Fok,
+        OrderTimeInForce::Day,
+        OrderTimeInForce::Gtc,
+    ] {
+        let broker = broker();
+        let mut account = PortfolioState::new(20_000.);
+        let mut decision = intent(AlgoOrderStyle::Vwap, 10_000.);
+        if !decision.order_intents[0].supports_time_in_force(tif) {
+            decision.order_intents = decision
+                .order_intents
+                .into_iter()
+                .map(|intent| intent.with_time_in_force(tif))
+                .collect();
+            let error = broker
+                .execute_between(
+                    limit_test_snapshot().date,
+                    &mut account,
+                    &data,
+                    &decision,
+                    Some(time(0)),
+                    Some(time(0)),
+                )
+                .unwrap_err();
+            assert!(
+                error
+                    .to_string()
+                    .contains("is not supported for this order intent")
+            );
+            assert_eq!(account.cash(), 20_000.);
+            assert!(broker.open_order_views().is_empty());
+            continue;
+        }
+        decision.order_intents = decision
+            .order_intents
+            .into_iter()
+            .map(|intent| intent.with_time_in_force(tif))
+            .collect();
+        let first = step(&broker, &mut account, &data, 0, &decision);
+        let persists = matches!(tif, OrderTimeInForce::Day | OrderTimeInForce::Gtc);
+        assert_eq!(
+            !broker.open_order_views().is_empty(),
+            persists,
+            "{tif:?}: {:?}",
+            first.order_events
+        );
+        if !persists {
+            assert!(
+                step(
+                    &broker,
+                    &mut account,
+                    &data,
+                    10,
+                    &StrategyDecision::default()
+                )
+                .fill_events
+                .is_empty()
+            );
+        }
+    }
+}
+
+#[test]
+fn two_working_algorithms_reserve_only_real_cash_without_starving_the_first() {
+    let data = data(&[(0, 10., 40_000), (10, 10., 40_000)]);
+    let broker = broker();
+    let mut account = PortfolioState::new(15_000.);
+    let mut decision = intent(AlgoOrderStyle::Twap, 10_000.);
+    decision
+        .order_intents
+        .extend(intent(AlgoOrderStyle::Twap, 10_000.).order_intents);
+    step(&broker, &mut account, &data, 0, &decision);
+    assert_eq!(
+        broker
+            .open_order_views()
+            .iter()
+            .map(|order| order.reserved_cash.unwrap())
+            .collect::<Vec<_>>(),
+        vec![10_000., 5_000.]
+    );
+    let report = step(
+        &broker,
+        &mut account,
+        &data,
+        10,
+        &StrategyDecision::default(),
+    );
+    assert_eq!(
+        report
+            .fill_events
+            .iter()
+            .map(|fill| (fill.order_id, fill.quantity))
+            .collect::<Vec<_>>(),
+        vec![(Some(1), 900), (Some(2), 500)]
+    );
+    assert!(account.cash() >= 0.);
+    assert!(broker.open_order_views().is_empty());
+}
+
+#[test]
+fn a_clock_slice_does_not_turn_window_twap_into_an_unlimited_instant_order() {
+    let data = data(&[(0, 10., 100), (2, 10., 100), (10, 10.1, 100)]);
+    let broker = broker()
+        .with_volume_limit(false)
+        .with_liquidity_limit(false);
+    let mut account = PortfolioState::new(20_000.);
+    step(
+        &broker,
+        &mut account,
+        &data,
+        0,
+        &intent(AlgoOrderStyle::Twap, 10_000.),
+    );
+    let first = step(
+        &broker,
+        &mut account,
+        &data,
+        2,
+        &StrategyDecision::default(),
+    );
+    let last = step(
+        &broker,
+        &mut account,
+        &data,
+        10,
+        &StrategyDecision::default(),
+    );
+    assert_eq!(
+        first
+            .fill_events
+            .iter()
+            .map(|fill| fill.quantity)
+            .sum::<u32>(),
+        100
+    );
+    assert_eq!(
+        last.fill_events
+            .iter()
+            .map(|fill| fill.quantity)
+            .sum::<u32>(),
+        100
+    );
+    assert_eq!(
+        last.order_events.last().unwrap().status,
+        OrderStatus::Expired
+    );
+    assert_eq!(last.order_events.last().unwrap().filled_quantity, 200);
+    assert!(broker.open_order_views().is_empty());
+}
+
+#[test]
+fn non_matching_controls_amend_or_cancel_without_filling_a_crossing_quote() {
+    let data = data(&[(0, 10., 4_000), (2, 9.4, 4_000)]);
+    let broker = broker();
+    let mut account = PortfolioState::new(20_000.);
+    step(
+        &broker,
+        &mut account,
+        &data,
+        0,
+        &StrategyDecision {
+            order_intents: vec![
+                OrderIntent::LimitShares {
+                    symbol: "000001.SZ".into(),
+                    quantity: 100,
+                    limit_price: 9.5,
+                    reason: "resting".into(),
+                }
+                .with_time_in_force(OrderTimeInForce::Gtc),
+            ],
+            ..Default::default()
+        },
+    );
+    assert_eq!(broker.open_order_views().len(), 1);
+    let modify = broker
+        .execute_controls_without_matching(
+            limit_test_snapshot().date,
+            limit_test_snapshot().date,
+            &mut account,
+            &data,
+            &StrategyDecision {
+                order_intents: vec![OrderIntent::ModifyOrder {
+                    order_id: 1,
+                    new_total_quantity: Some(200),
+                    new_limit_price: Some(9.3),
+                    reason: "pre-open-amend".into(),
+                }],
+                ..Default::default()
+            },
+            Some(time(2)),
+        )
+        .unwrap();
+    assert!(modify.fill_events.is_empty());
+    assert_eq!(broker.open_order_views()[0].limit_price, 9.3);
+    assert_eq!(broker.open_order_views()[0].requested_quantity, 200);
+    let cancel = broker
+        .execute_controls_without_matching(
+            limit_test_snapshot().date,
+            limit_test_snapshot().date,
+            &mut account,
+            &data,
+            &StrategyDecision {
+                order_intents: vec![OrderIntent::CancelAll {
+                    reason: "pre-open-cancel".into(),
+                }],
+                ..Default::default()
+            },
+            Some(time(2)),
+        )
+        .unwrap();
+    assert!(cancel.fill_events.is_empty());
+    assert_eq!(
+        cancel.order_events.last().unwrap().status,
+        OrderStatus::Canceled
+    );
+    assert_eq!(account.cash(), 20_000.);
+    assert!(broker.open_order_views().is_empty());
+}
+
+#[test]
+fn control_only_phase_cannot_be_used_to_submit_an_order_or_leave_matching_disabled() {
+    let data = data(&[(0, 10., 4_000)]);
+    let broker = broker();
+    let mut account = PortfolioState::new(20_000.);
+    let submit = StrategyDecision {
+        order_intents: vec![OrderIntent::Shares {
+            symbol: "000001.SZ".into(),
+            quantity: 100,
+            reason: "normal-order".into(),
+        }],
+        ..Default::default()
+    };
+    assert!(
+        broker
+            .execute_controls_without_matching(
+                limit_test_snapshot().date,
+                limit_test_snapshot().date,
+                &mut account,
+                &data,
+                &submit,
+                Some(time(0))
+            )
+            .is_err()
+    );
+    assert_eq!(account.cash(), 20_000.);
+    assert_eq!(
+        step(&broker, &mut account, &data, 0, &submit).fill_events[0].quantity,
+        100
+    );
+}

crates/fidc-core/src/broker_order_recovery_tests.rs

@@ -0,0 +1,515 @@
+// Kept inside broker::tests to inspect internal accepted-order identity as
+// well as the public report. These are simulator states, never GT requests.
+fn recovery_test_data(missing_previous: Option<usize>, intraday: bool) -> DataSet {
+    let previous = chrono::NaiveDate::from_ymd_opt(2025, 1, 2).unwrap();
+    let date = chrono::NaiveDate::from_ymd_opt(2025, 1, 3).unwrap();
+    let mut instruments = Vec::new();
+    let mut rows = Vec::new();
+    let mut candidates = Vec::new();
+    let mut quotes = Vec::new();
+    for index in 1..=2 {
+        let symbol = format!("{index:06}.SZ");
+        let mut instrument = limit_test_instrument();
+        instrument.symbol = symbol.clone();
+        instruments.push(instrument);
+        for day in [previous, date] {
+            if day == previous && missing_previous == Some(index) {
+                continue;
+            }
+            let mut row = dated_limit_test_snapshot(day);
+            row.symbol = symbol.clone().into();
+            rows.push(row);
+            let mut candidate = dated_limit_test_candidate(day, false, false, true, true);
+            candidate.symbol = symbol.clone().into();
+            candidates.push(candidate);
+        }
+        if intraday {
+            let mut quote = limit_test_quote(10., 10., 10.);
+            quote.symbol = symbol;
+            quote.date = date;
+            quote.timestamp = date.and_hms_opt(9, 33, 0).unwrap();
+            quotes.push(quote);
+        }
+    }
+    DataSet::from_components_with_actions_and_quotes(
+        instruments,
+        rows,
+        vec![],
+        candidates,
+        vec![
+            dated_limit_test_benchmark(previous),
+            dated_limit_test_benchmark(date),
+        ],
+        vec![],
+        quotes,
+    )
+    .unwrap()
+}
+
+fn recovery_test_broker(
+    intraday: bool,
+    first_side: OrderSide,
+) -> (
+    BrokerSimulator<ChinaAShareCostModel, ChinaEquityRuleHooks>,
+    PortfolioState,
+) {
+    let mut broker = BrokerSimulator::new(ChinaAShareCostModel::default(), ChinaEquityRuleHooks)
+        .with_matching_type(if intraday {
+            MatchingType::MinuteLast
+        } else {
+            MatchingType::CurrentBarClose
+        })
+        .with_volume_limit(false)
+        .with_liquidity_limit(false)
+        .with_slippage_model(SlippageModel::HistoricalVolumeVolatility(
+            super::DynamicSlippageConfig::new(0., 0., 0.1),
+        ));
+    if intraday {
+        broker =
+            broker.with_intraday_execution_start_time(NaiveTime::from_hms_opt(9, 33, 0).unwrap());
+    }
+    let mut first = test_open_order(1);
+    first.filled_quantity = 100;
+    first.remaining_quantity = 100;
+    first.commission_remaining = Some(0.);
+    first.side = first_side;
+    let mut second = test_open_order(2);
+    second.symbol = "000002.SZ".into();
+    broker.upsert_open_order(first);
+    broker.upsert_open_order(second);
+    broker.next_order_id.set(3);
+    let mut account = PortfolioState::new(9000.);
+    account.position_mut("000001.SZ").buy(
+        chrono::NaiveDate::from_ymd_opt(2025, 1, 2).unwrap(),
+        if first_side == OrderSide::Buy {
+            100
+        } else {
+            200
+        },
+        10.,
+    );
+    account.begin_trading_day();
+    (broker, account)
+}
+
+fn recovery_report_value(report: &BrokerExecutionReport) -> serde_json::Value {
+    serde_json::json!({"orders":report.order_events,"fills":report.fill_events,
+        "positions":report.position_events,"accounts":report.account_events,
+        "events":report.process_events,"diagnostics":report.diagnostics})
+}
+
+#[test]
+fn failed_resting_order_batch_keeps_accepted_orders_and_unpublished_financial_state() {
+    let date = chrono::NaiveDate::from_ymd_opt(2025, 1, 3).unwrap();
+    for intraday in [false, true] {
+        for first_side in [OrderSide::Buy, OrderSide::Sell] {
+            for missing in [1, 2] {
+                let (broker, mut account) = recovery_test_broker(intraday, first_side);
+                let orders = format!("{:?}", broker.open_orders.borrow());
+                let ledger = account.financial_replay_identity();
+                let error = broker
+                    .execute(
+                        date,
+                        &mut account,
+                        &recovery_test_data(Some(missing), intraday),
+                        &StrategyDecision::default(),
+                    )
+                    .unwrap_err();
+                assert!(
+                    error
+                        .to_string()
+                        .contains("historical_slippage_calibration_missing")
+                );
+                assert_eq!(
+                    format!("{:?}", broker.open_orders.borrow()),
+                    orders,
+                    "intraday={intraday} first={first_side:?} missing={missing}"
+                );
+                assert_eq!(account.financial_replay_identity(), ledger);
+                assert!(broker.same_day_sold_symbols.borrow().is_empty());
+                let recovered = broker
+                    .execute(
+                        date,
+                        &mut account,
+                        &recovery_test_data(None, intraday),
+                        &StrategyDecision::default(),
+                    )
+                    .unwrap();
+                let (clean, mut clean_account) = recovery_test_broker(intraday, first_side);
+                let reference = clean
+                    .execute(
+                        date,
+                        &mut clean_account,
+                        &recovery_test_data(None, intraday),
+                        &StrategyDecision::default(),
+                    )
+                    .unwrap();
+                assert_eq!(
+                    recovery_report_value(&recovered),
+                    recovery_report_value(&reference)
+                );
+                assert_eq!(
+                    account.financial_replay_identity(),
+                    clean_account.financial_replay_identity()
+                );
+                assert!(broker.open_order_views().is_empty());
+                assert_eq!(recovered.fill_events.len(), 2);
+            }
+        }
+    }
+}
+
+#[test]
+fn failed_new_batch_does_not_erase_prior_success_or_double_charge_on_retry() {
+    let date = chrono::NaiveDate::from_ymd_opt(2025, 1, 3).unwrap();
+    let (broker, mut account) = recovery_test_broker(true, OrderSide::Buy);
+    let good = recovery_test_data(None, true);
+    let prior = broker
+        .execute(date, &mut account, &good, &StrategyDecision::default())
+        .unwrap();
+    assert_eq!(prior.fill_events.len(), 2);
+    let initial = account.financial_replay_identity();
+    let id = broker.next_order_id.get();
+    let decision = StrategyDecision {
+        order_intents: vec![
+            OrderIntent::Shares {
+                symbol: "000001.SZ".into(),
+                quantity: 100,
+                reason: "next-batch-a".into(),
+            },
+            OrderIntent::Shares {
+                symbol: "000002.SZ".into(),
+                quantity: 100,
+                reason: "next-batch-b".into(),
+            },
+        ],
+        ..Default::default()
+    };
+    // A later quote lets this batch execute independently of the prior fills.
+    let mut parts = good.snapshot_components();
+    for quote in &mut parts.execution_quotes {
+        quote.timestamp += chrono::Duration::minutes(1);
+    }
+    broker
+        .runtime_execution_clock
+        .set(Some(NaiveTime::from_hms_opt(9, 34, 0).unwrap()));
+    let restored = DataSet::from_components_with_actions_and_quotes(
+        parts.instruments.clone(),
+        parts.market.clone(),
+        parts.factors.clone(),
+        parts.candidates.clone(),
+        parts.benchmarks.clone(),
+        vec![],
+        parts.execution_quotes.clone(),
+    )
+    .unwrap();
+    parts
+        .market
+        .retain(|row| !(row.symbol.as_str() == "000002.SZ" && row.date < date));
+    let broken = DataSet::from_components_with_actions_and_quotes(
+        parts.instruments,
+        parts.market,
+        parts.factors,
+        parts.candidates,
+        parts.benchmarks,
+        vec![],
+        parts.execution_quotes,
+    )
+    .unwrap();
+    assert!(
+        broker
+            .execute(date, &mut account, &broken, &decision)
+            .is_err()
+    );
+    assert_eq!(account.financial_replay_identity(), initial);
+    assert_eq!(broker.next_order_id.get(), id);
+    assert!(broker.open_orders.borrow().is_empty());
+    let result = broker
+        .execute(date, &mut account, &restored, &decision)
+        .unwrap();
+    assert_eq!(result.fill_events.len(), 2);
+    assert_eq!(result.fill_events[0].order_id, Some(id));
+    assert_eq!(result.fill_events[1].order_id, Some(id + 1));
+    assert_eq!(account.position("000001.SZ").unwrap().quantity, 300);
+    assert_eq!(account.position("000002.SZ").unwrap().quantity, 300);
+    assert_eq!(
+        prior.fill_events.len(),
+        2,
+        "previously returned report remains intact"
+    );
+}
+
+#[test]
+fn unwinding_an_unpublished_simulator_transaction_restores_its_state() {
+    let (broker, mut account) = recovery_test_broker(false, OrderSide::Sell);
+    let initial = account.financial_replay_identity();
+    let orders = format!("{:?}", broker.open_orders.borrow());
+    let result = std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| {
+        let _ = broker.execution_transaction(&mut account, true, None, |account| {
+            account.apply_cash_delta(500.).unwrap();
+            broker.open_orders.borrow_mut().clear();
+            panic!("isolated simulator callback unwind");
+        });
+    }));
+    assert!(result.is_err());
+    assert_eq!(account.financial_replay_identity(), initial);
+    assert_eq!(format!("{:?}", broker.open_orders.borrow()), orders);
+    assert_eq!(broker.execution_transaction_depth.get(), 0);
+}
+
+#[test]
+fn deferred_etf_batch_failure_keeps_both_targets_and_prior_generation_progress() {
+    let date = chrono::NaiveDate::from_ymd_opt(2025, 1, 3).unwrap();
+    let previous = chrono::NaiveDate::from_ymd_opt(2025, 1, 2).unwrap();
+    let mut parts = recovery_test_data(None, false).snapshot_components();
+    for instrument in &mut parts.instruments {
+        instrument.board = "ETF".into();
+    }
+    let good = DataSet::from_components_with_actions_and_quotes(
+        parts.instruments.clone(),
+        parts.market.clone(),
+        parts.factors.clone(),
+        parts.candidates.clone(),
+        parts.benchmarks.clone(),
+        vec![],
+        vec![],
+    )
+    .unwrap();
+    parts
+        .market
+        .retain(|row| !(row.date == date && row.symbol.as_str() == "000002.SZ"));
+    let bad = DataSet::from_components_with_actions_and_quotes(
+        parts.instruments,
+        parts.market,
+        parts.factors,
+        parts.candidates,
+        parts.benchmarks,
+        vec![],
+        vec![],
+    )
+    .unwrap();
+    let broker = BrokerSimulator::new(ChinaAShareCostModel::default(), ChinaEquityRuleHooks)
+        .with_volume_limit(false)
+        .with_liquidity_limit(false);
+    let members = std::sync::Arc::new(
+        (1..=2)
+            .map(|index| crate::stock_pool_execution::StockPoolMemberSpec {
+                symbol: format!("{index:06}.SZ"),
+                requested_order: index,
+                recommendation_reason: String::new(),
+                target_weight_bps: None,
+                stop_loss: None,
+                take_profit: None,
+            })
+            .collect::<Vec<_>>(),
+    );
+    broker
+        .deferred_etf_targets
+        .borrow_mut()
+        .replace_generation("pool", "latest");
+    for index in 1..=2 {
+        broker
+            .deferred_etf_targets
+            .borrow_mut()
+            .upsert(crate::etf_execution::DeferredEtfTarget {
+                pool_id: "pool".into(),
+                generation: "latest".into(),
+                symbol: format!("{index:06}.SZ"),
+                signal_date: previous,
+                signal_at: previous.and_hms_opt(13, 0, 0).unwrap(),
+                execute_on: Some(date),
+                target_value: 1000.into(),
+                target_weight_bps: 5000,
+                side: crate::stock_pool_execution::OrderSide::Buy,
+                max_positions: 2,
+                rule: Default::default(),
+                members: std::sync::Arc::clone(&members),
+                reason: "deferred recovery fixture".into(),
+            });
+    }
+    let queue = format!("{:?}", broker.deferred_etf_targets.borrow());
+    let mut account = PortfolioState::new(10000.);
+    let state = account.stock_pool_execution_state("pool");
+    assert!(
+        broker
+            .execute_deferred_etf_targets(date, &mut account, &bad)
+            .is_err()
+    );
+    assert_eq!(account.cash(), 10000.);
+    assert!(account.positions().is_empty());
+    assert_eq!(account.stock_pool_execution_state("pool"), state);
+    assert_eq!(format!("{:?}", broker.deferred_etf_targets.borrow()), queue);
+    assert_eq!(broker.next_order_id.get(), 1);
+    assert_eq!(broker.execution_transaction_depth.get(), 0);
+    let result = broker
+        .execute_deferred_etf_targets(date, &mut account, &good)
+        .unwrap();
+    assert_eq!(result.fill_events.len(), 2, "{result:?}");
+    assert_eq!(broker.pending_etf_target_count(), 0);
+    assert_eq!(account.position("000001.SZ").unwrap().quantity, 100);
+    assert_eq!(account.position("000002.SZ").unwrap().quantity, 100);
+}
+
+#[test]
+fn public_callback_unwind_does_not_leak_order_context_or_authoritative_prior_state() {
+    struct PanicRules;
+    impl crate::rules::EquityRuleHooks for PanicRules {
+        fn can_buy(
+            &self,
+            _: chrono::NaiveDate,
+            _: &DailyMarketSnapshot,
+            _: &CandidateEligibility,
+            _: PriceField,
+        ) -> crate::rules::RuleCheck {
+            panic!("isolated rule callback panic")
+        }
+        fn can_sell(
+            &self,
+            _: chrono::NaiveDate,
+            _: &DailyMarketSnapshot,
+            _: &CandidateEligibility,
+            _: &crate::portfolio::Position,
+            _: PriceField,
+        ) -> crate::rules::RuleCheck {
+            unreachable!()
+        }
+    }
+    let date = chrono::NaiveDate::from_ymd_opt(2025, 1, 3).unwrap();
+    let prior = chrono::NaiveDate::from_ymd_opt(2025, 1, 2).unwrap();
+    let broker = BrokerSimulator::new(ChinaAShareCostModel::default(), PanicRules)
+        .with_volume_limit(false)
+        .with_liquidity_limit(false);
+    broker.runtime_decision_date.set(Some(prior));
+    broker
+        .runtime_buy_denials
+        .borrow_mut()
+        .insert("unrelated".into(), "prior".into());
+    let mut account = PortfolioState::new(10000.);
+    let decision = StrategyDecision {
+        buy_denials: BTreeMap::from([("another".into(), "temporary".into())]),
+        order_intents: vec![
+            OrderIntent::LimitShares {
+                symbol: "000001.SZ".into(),
+                quantity: 100,
+                limit_price: 10.,
+                reason: "panic fixture".into(),
+            }
+            .with_time_in_force(OrderTimeInForce::Gtc),
+        ],
+        ..Default::default()
+    };
+    assert!(
+        std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| {
+            let _ = broker.execute(
+                date,
+                &mut account,
+                &recovery_test_data(None, false),
+                &decision,
+            );
+        }))
+        .is_err()
+    );
+    assert_eq!(account.cash(), 10000.);
+    assert!(account.positions().is_empty());
+    assert!(broker.open_order_views().is_empty());
+    assert_eq!(broker.runtime_decision_date.get(), Some(prior));
+    assert_eq!(
+        *broker.runtime_buy_denials.borrow(),
+        BTreeMap::from([("unrelated".into(), "prior".into())])
+    );
+    assert_eq!(broker.runtime_time_in_force.get(), None);
+    assert_eq!(broker.runtime_target_position_limit.get(), None);
+    assert_eq!(broker.execution_transaction_depth.get(), 0);
+}
+
+#[test]
+fn simulator_transaction_profile_preserves_successful_output() {
+    let date = chrono::NaiveDate::from_ymd_opt(2025, 1, 3).unwrap();
+    let previous = chrono::NaiveDate::from_ymd_opt(2025, 1, 2).unwrap();
+    let mut instruments = Vec::new();
+    let mut market = Vec::new();
+    let mut candidates = Vec::new();
+    for index in 1..=30 {
+        let symbol = format!("{index:06}.SZ");
+        let mut instrument = limit_test_instrument();
+        instrument.symbol = symbol.clone();
+        instruments.push(instrument);
+        for day in [previous, date] {
+            let mut row = dated_limit_test_snapshot(day);
+            row.symbol = symbol.clone().into();
+            market.push(row);
+            let mut row = dated_limit_test_candidate(day, false, false, true, true);
+            row.symbol = symbol.clone().into();
+            candidates.push(row);
+        }
+    }
+    let data = DataSet::from_components(
+        instruments,
+        market,
+        vec![],
+        candidates,
+        vec![
+            dated_limit_test_benchmark(previous),
+            dated_limit_test_benchmark(date),
+        ],
+    )
+    .unwrap();
+    let mut reference = None;
+    let mut samples = Vec::new();
+    for protected in [false, true, true, false] {
+        let broker = BrokerSimulator::new(ChinaAShareCostModel::default(), ChinaEquityRuleHooks)
+            .with_matching_type(MatchingType::CurrentBarClose)
+            .with_volume_limit(false)
+            .with_liquidity_limit(false);
+        // Private comparison only: no runtime option can disable protection.
+        if !protected {
+            broker.execution_transaction_depth.set(1);
+        }
+        let mut account = PortfolioState::new(10_000_000.);
+        for index in 1..=30 {
+            for _ in 0..20 {
+                account
+                    .position_mut(&format!("{index:06}.SZ"))
+                    .buy(previous, 100, 10.);
+            }
+        }
+        account.begin_trading_day();
+        let mut orders = Vec::new();
+        let mut fills = Vec::new();
+        let start = std::time::Instant::now();
+        for index in 0..500 {
+            let report = broker
+                .execute(
+                    date,
+                    &mut account,
+                    &data,
+                    &StrategyDecision {
+                        order_intents: vec![OrderIntent::Shares {
+                            symbol: format!("{:06}.SZ", index % 30 + 1),
+                            quantity: 100,
+                            reason: "transaction profile".into(),
+                        }],
+                        ..Default::default()
+                    },
+                )
+                .unwrap();
+            orders.extend(report.order_events);
+            fills.extend(report.fill_events);
+        }
+        samples.push(
+            serde_json::json!({"protected":protected,"microseconds":start.elapsed().as_micros()}),
+        );
+        assert_eq!(fills.len(), 500);
+        let outcome = serde_json::json!({"orders":orders,"fills":fills,"ledger":account.financial_replay_identity()});
+        if let Some(reference) = &reference {
+            assert_eq!(&outcome, reference);
+        } else {
+            reference = Some(outcome);
+        }
+    }
+    println!(
+        "simulator_transaction_profile={}",
+        serde_json::json!({"securities":30,"initial_lots_per_security":20,"calls":500,"samples":samples,
+        "scope":"isolated broker only; not Source or full backtest throughput"})
+    );
+}

crates/fidc-core/src/broker_stock_pool.rs

@@ -0,0 +1,856 @@
+//! Executes one frozen pool intent against real broker-simulator state.
+use super::*;
+use crate::holding_policy::HoldingLifecycleEvidence;
+use crate::stock_pool_execution as pool;
+use rust_decimal::{Decimal, prelude::ToPrimitive};
+use chrono::Timelike;
+
+#[derive(Debug, Clone)]
+pub(super) struct DeferredStockPoolExecution {
+    date: NaiveDate,
+    contract: Box<pool::FrozenStockPoolIntent>,
+    buy_only: bool,
+    symbols: BTreeSet<String>,
+    initial_holdings: BTreeSet<String>,
+}
+
+impl<C, R> BrokerSimulator<C, R> {
+    pub(crate) fn pending_stock_pool_symbols(&self) -> BTreeSet<String> {
+        self.deferred_stock_pools.borrow().values().flat_map(|pending| pending.symbols.iter().cloned()).collect()
+    }
+
+    pub(crate) fn has_pending_stock_pool_execution(&self) -> bool {
+        !self.deferred_stock_pools.borrow().is_empty()
+    }
+
+    pub(crate) fn finish_stock_pool_session(&self, date: NaiveDate, report: &mut BrokerExecutionReport) {
+        self.deferred_stock_pools.borrow_mut().retain(|_, pending| {
+            if pending.date <= date {
+                report.diagnostics.push(format!("stock_pool_unsubmitted_phase_expired generation={} date={date} no_buy_order_created=true",pending.contract.generation));
+                false
+            } else { true }
+        });
+    }
+}
+
+fn decimal(value: f64, label: &str) -> Result<Decimal, BacktestError> {
+    if !value.is_finite() {
+        return Err(BacktestError::Execution(format!(
+            "stock_pool_nonfinite_{label}"
+        )));
+    }
+    value
+        .to_string()
+        .parse()
+        .map_err(|_| BacktestError::Execution(format!("stock_pool_decimal_range_{label}")))
+}
+
+fn etf_activity(report:&mut BrokerExecutionReport,date:NaiveDate,symbol:&str,side:pool::OrderSide,detail:String) {
+    report.process_events.push(ProcessEvent {date,kind:ProcessEventKind::EtfExecutionFallback,order_id:None,
+        symbol:Some(symbol.into()),side:Some(if side==pool::OrderSide::Buy {OrderSide::Buy} else {OrderSide::Sell}),detail});
+}
+
+fn pool_positions(
+    portfolio: &PortfolioState,
+    date: NaiveDate,
+) -> Result<Vec<pool::Position>, BacktestError> {
+    portfolio
+        .positions()
+        .values()
+        .filter(|p| p.quantity > 0)
+        .map(|p| {
+            Ok(pool::Position {
+                symbol: p.symbol.clone(),
+                quantity: Decimal::from(p.quantity),
+                closable_quantity: Decimal::from(p.sellable_qty(date)),
+                average_cost: decimal(p.average_cost, "position_cost")?,
+            })
+        })
+        .collect()
+}
+
+#[cfg(test)]
+mod successor_protection_tests {
+    use super::*;
+    use crate::holding_policy::{AutomaticTradeLock, AutomaticTradeProtection};
+    fn day(n: u32) -> NaiveDate { NaiveDate::from_ymd_opt(2026, 9, n).unwrap() }
+
+    #[test]
+    fn deferred_etf_open_rechecks_inherited_locks_and_cooldown_before_any_order() {
+        let old = "159915.SZ";
+        let new = "159999.SZ";
+        let data = DataSet::from_components(
+            [old, new].into_iter().map(|symbol| crate::Instrument {
+                symbol: symbol.into(), name: "isolated ETF fixture".into(), board: "ETF".into(), round_lot: 100,
+                listed_at: Some(day(1)), delisted_at: None, status: "active".into(),
+            }).collect(), vec![crate::DailyMarketSnapshot {
+                date: day(15), symbol: new.into(), timestamp: None, day_open: 5., open: 5., high: 5., low: 5.,
+                close: 5., last_price: 5., bid1: 5., ask1: 5., prev_close: 5., volume: 100000,
+                minute_volume: 0, bid1_volume: 100000, ask1_volume: 100000, trading_phase: None,
+                paused: false, upper_limit: 5.5, lower_limit: 4.5, price_tick: 0.001,
+            }], vec![], vec![crate::CandidateEligibility {
+                date: day(15), symbol: new.into(), is_st: false, is_star_st: false, is_new_listing: false,
+                is_paused: false, allow_buy: true, allow_sell: true, is_kcb: false, is_one_yuan: false,
+                risk_level_code: None,
+            }], [11,14,15].into_iter().map(|n| crate::BenchmarkSnapshot {
+                date: day(n), benchmark: "000300.SH".into(), open: 100., close: 100., prev_close: 100., volume: 10000,
+            }).collect()).unwrap();
+        for mode in ["lock", "cooldown", "expired"] {
+            let broker = BrokerSimulator::new(crate::ChinaAShareCostModel::default(), crate::ChinaEquityRuleHooks)
+                .with_volume_limit(false).with_liquidity_limit(false);
+            let mut portfolio = PortfolioState::new(10000.);
+            portfolio.position_mut(old).buy(day(11), 200, 10.);
+            portfolio.position_mut(old).sell(100, 10.).unwrap();
+            broker.mark_same_day_sold(day(11), old);
+            portfolio.apply_successor_conversion(old, new, 2., 0.).unwrap();
+            let policy = AutomaticTradeProtection {
+                sell_cooldown_days: if mode == "cooldown" { 3 } else { 0 },
+                locks: if mode != "cooldown" { vec![AutomaticTradeLock {
+                    symbol: old.into(), start_date: day(11), end_date: Some(day(if mode == "expired" {14} else {15})),
+                }] } else { vec![] }, ..Default::default()
+            };
+            let rule = pool::StockPoolExecutionRule { automatic_trade_protection: policy, ..Default::default() };
+            broker.deferred_etf_targets.borrow_mut().replace_generation("pool", "latest");
+            broker.deferred_etf_targets.borrow_mut().upsert(crate::etf_execution::DeferredEtfTarget {
+                pool_id: "pool".into(), generation: "latest".into(), symbol: new.into(),
+                signal_date: day(14), signal_at: day(14).and_hms_opt(13,0,0).unwrap(), execute_on: Some(day(15)),
+                target_value: 5000.into(), target_weight_bps: 10000, side: pool::OrderSide::Buy, max_positions: 1,
+                rule: std::sync::Arc::new(rule), members: std::sync::Arc::new(vec![pool::StockPoolMemberSpec {
+                    symbol: new.into(), requested_order: 0, recommendation_reason: String::new(),
+                    target_weight_bps: None, stop_loss: None, take_profit: None,
+                }]), reason: "isolated deferred ETF target".into(),
+            });
+            let report = broker.execute_deferred_etf_targets(day(15), &mut portfolio, &data).unwrap();
+            if mode == "expired" {
+                assert_eq!(report.fill_events.len(), 1, "{report:?}");
+                assert_eq!(portfolio.position(new).unwrap().quantity, 1000);
+            } else {
+                assert!(report.order_events.is_empty(), "{mode}: {report:?}");
+                assert!(report.fill_events.is_empty());
+                assert_eq!(portfolio.position(new).unwrap().quantity, 200);
+                assert!(report.diagnostics.iter().any(|text| text.contains(if mode == "lock" {"automatic_trade_locked"} else {"sell_fill_cooldown"})));
+            }
+        }
+    }
+}
+
+impl<C: CostModel, R: EquityRuleHooks> BrokerSimulator<C, R> {
+    fn pool_automatic_permission(&self, symbol: &str, date: NaiveDate,
+        policy: &crate::holding_policy::AutomaticTradeProtection,
+        portfolio: &PortfolioState, data: &DataSet)
+        -> Result<crate::holding_policy::AutomaticTradePermission, BacktestError> {
+        let position = portfolio.position(symbol).filter(|position| position.quantity > 0);
+        let sold = self.same_day_sold_symbols.borrow().iter().rev()
+            .find(|(day, symbols)| **day <= date && (symbols.contains(symbol)
+                || portfolio.corporate_predecessors(symbol).any(|previous| symbols.contains(previous))))
+            .map(|(day, _)| *day);
+        let evidence = HoldingLifecycleEvidence {
+            has_position: position.is_some(), opened_date: position.and_then(|position| position.opened_date()),
+            last_buy_date: position.and_then(|position| position.last_buy_date()), last_sell_date: sold,
+        };
+        policy.evaluate_with_predecessors(symbol, date, &evidence, data.calendar(),
+            portfolio.corporate_predecessors(symbol)).map_err(BacktestError::Execution)
+    }
+
+    pub(super) fn resume_stock_pool_executions(&self, date: NaiveDate, portfolio: &mut PortfolioState, data: &DataSet,
+        session: &mut BrokerExecutionSession, report: &mut BrokerExecutionReport) -> Result<(), BacktestError> {
+        let clock = self.runtime_intraday_start_time.get().or(self.intraday_execution_start_time);
+        let mut expired = Vec::new();
+        for (id, pending) in self.deferred_stock_pools.borrow().iter() {
+            let end = NaiveTime::parse_from_str(&pending.contract.rule.window_end, "%H:%M")
+                .map_err(|_| BacktestError::Execution("stock_pool_execution_window_invalid".into()))?;
+            if pending.date != date || clock.is_some_and(|clock| clock >= end) { expired.push(id.clone()); }
+        }
+        for id in expired {
+            if let Some(pending) = self.deferred_stock_pools.borrow_mut().remove(&id) {
+                report.diagnostics.push(format!("stock_pool_unsubmitted_phase_expired generation={} date={date} no_buy_order_created=true",pending.contract.generation));
+            }
+        }
+        if self.has_open_orders() || clock.is_none() { return Ok(()); }
+        let pending = std::mem::take(&mut *self.deferred_stock_pools.borrow_mut());
+        for (id, pending) in pending {
+            let now = clock.expect("clock checked above");
+            let start = NaiveTime::parse_from_str(&pending.contract.rule.window_start, "%H:%M")
+                .map_err(|_| BacktestError::Execution("stock_pool_execution_window_invalid".into()))?;
+            if now < start || !pool::stock_pool_is_trading_minute(now.hour() * 60 + now.minute()) {
+                self.deferred_stock_pools.borrow_mut().insert(id, pending);
+                continue;
+            }
+            let prior_followup = self.runtime_stock_pool_followup.replace(true);
+            let prior_decision = self.runtime_decision_date.replace(Some(pending.contract.signal_date));
+            let prior_created = self.runtime_order_created_date.replace(Some(date));
+            let order_start = report.order_events.len();
+            let fill_start = report.fill_events.len();
+            report.diagnostics.push(format!("stock_pool_resume_after_order_reports generation={} clock={} cash={}",pending.contract.generation,clock.unwrap(),portfolio.cash()));
+            let result = self.process_stock_pool_contract_phase(date, portfolio, data, &pending.contract,
+                &mut session.intraday_turnover, &mut session.execution_cursors, &mut session.global_execution_cursor,
+                &mut session.commission_state, report, pending.buy_only, Some(&pending.initial_holdings));
+            self.runtime_stock_pool_followup.set(prior_followup);
+            self.runtime_decision_date.set(prior_decision);
+            self.runtime_order_created_date.set(prior_created);
+            result?;
+            Self::annotate_report_range(report, order_start, fill_start, pending.contract.signal_date, date, date);
+        }
+        Ok(())
+    }
+
+    fn pool_quote_inputs(
+        &self,
+        date: NaiveDate,
+        data: &DataSet,
+        symbols: &BTreeSet<String>,
+        execution_clock: Option<NaiveDateTime>,
+        cumulative_conditions: bool,
+    ) -> Result<(Vec<pool::MarketSnapshot>, Vec<String>), BacktestError> {
+        let mut unavailable = Vec::new();
+        let quotes = symbols
+            .iter()
+            .map(|symbol| {
+                let snapshot = data.market(date, symbol).ok_or_else(|| {
+                    BacktestError::Execution(format!(
+                        "stock_pool_execution_snapshot_missing:{symbol}:{date}"
+                    ))
+                })?;
+                let instrument = data.instruments().get(symbol).ok_or_else(|| {
+                    BacktestError::Execution(format!("stock_pool_instrument_missing:{symbol}"))
+                })?;
+                let fallback = self.pool_etf_fallback_reference(date, data, symbol, execution_clock)?;
+                let (price, prev, volume, amount, bid, ask, buy_price, sell_price) = if let Some(reference) = fallback {
+                    let calibration = self.slippage_calibration(data, snapshot)?;
+                    (reference.price, snapshot.prev_close, None, None, None, None,
+                        self.quote_execution_price(snapshot, OrderSide::Buy, reference.price, None, calibration.as_ref())?,
+                        self.quote_execution_price(snapshot, OrderSide::Sell, reference.price, None, calibration.as_ref())?)
+                } else if self
+                    .matching_type_uses_intraday_quotes()
+                {
+                    let time = self
+                        .runtime_intraday_start_time
+                        .get()
+                        .or(self.intraday_execution_start_time)
+                        .ok_or_else(|| {
+                            BacktestError::Execution(
+                                "stock_pool_intraday_execution_clock_required".into(),
+                            )
+                        })?;
+                    let clock = execution_clock
+                        .unwrap_or(date.and_time(time))
+                        .max(date.and_time(time));
+                    let quote = data
+                        .execution_quotes_on(date, symbol)
+                        .iter()
+                        .rev()
+                        .find(|quote| quote.timestamp <= clock)
+                        .ok_or_else(|| {
+                            BacktestError::Execution(format!(
+                                "stock_pool_execution_quote_missing:{symbol}:{clock}"
+                            ))
+                        })?;
+                    if !quote.last_price.is_finite() || quote.last_price <= 0.0 {
+                        return Err(BacktestError::Execution(format!(
+                            "stock_pool_execution_quote_invalid:{symbol}:{clock}"
+                        )));
+                    }
+                    let raw_buy = self
+                        .select_quote_reference_price(
+                            snapshot,
+                            quote,
+                            OrderSide::Buy,
+                            self.matching_type_for_algo_request(None),
+                        )
+                        .ok_or_else(|| {
+                            BacktestError::Execution(format!(
+                                "stock_pool_buy_reference_missing:{symbol}:{clock}"
+                            ))
+                        })?;
+                    let raw_sell = self
+                        .select_quote_reference_price(
+                            snapshot,
+                            quote,
+                            OrderSide::Sell,
+                            self.matching_type_for_algo_request(None),
+                        )
+                        .ok_or_else(|| {
+                            BacktestError::Execution(format!(
+                                "stock_pool_sell_reference_missing:{symbol}:{clock}"
+                            ))
+                        })?;
+                    let calibration = self.slippage_calibration(data, snapshot)?;
+                    let buy = self.quote_execution_price(
+                        snapshot,
+                        OrderSide::Buy,
+                        raw_buy,
+                        None,
+                        calibration.as_ref(),
+                    )?;
+                    let sell = self.quote_execution_price(
+                        snapshot,
+                        OrderSide::Sell,
+                        raw_sell,
+                        None,
+                        calibration.as_ref(),
+                    )?;
+                    let totals = if cumulative_conditions {
+                        match data.execution_session_totals(symbol, clock) {
+                            Ok(totals) => Some(totals),
+                            Err(reason) => { unavailable.push(reason); None }
+                        }
+                    } else { None };
+                    (
+                        quote.last_price,
+                        snapshot.prev_close,
+                        totals.map(|total| total.0),
+                        totals.map(|total| total.1),
+                        Some(quote.bid1),
+                        Some(quote.ask1),
+                        buy,
+                        sell,
+                    )
+                } else {
+                    let price = snapshot.price(self.effective_execution_price_field(date));
+                    if !price.is_finite() || price <= 0.0 {
+                        return Err(BacktestError::Execution(format!(
+                            "stock_pool_execution_price_missing:{symbol}:{date}"
+                        )));
+                    }
+                    // A daily open does not reveal the session's volume/turnover.
+                    let completed = self.effective_execution_price_field(date) == PriceField::Close;
+                    let totals = if cumulative_conditions && !completed {
+                        let at = execution_clock.unwrap_or_else(|| date.and_hms_opt(9,30,0).unwrap());
+                        match data.execution_session_totals(symbol, at) {
+                            Ok(totals) => Some(totals),
+                            Err(reason) => { unavailable.push(reason); None }
+                        }
+                    } else { None };
+                    let amount = if completed && cumulative_conditions {
+                        data.factor(date, symbol).and_then(|row| row.extra_factors.get("amount")).copied()
+                            .map(|value| decimal(value, "amount")).transpose()?
+                    } else { totals.map(|total| total.1) };
+                    (
+                        price,
+                        snapshot.prev_close,
+                        if completed { Some(Decimal::from(snapshot.volume)) } else { totals.map(|total| total.0) },
+                        amount,
+                        None,
+                        None,
+                        self.snapshot_execution_price(data, snapshot, OrderSide::Buy, None)?,
+                        self.snapshot_execution_price(data, snapshot, OrderSide::Sell, None)?,
+                    )
+                };
+                Ok(pool::MarketSnapshot {
+                    symbol: symbol.clone(),
+                    last_price: decimal(price, "price")?,
+                    prev_close: Some(decimal(prev, "prev_close")?),
+                    volume,
+                    turnover: amount,
+                    bid_price_1: bid.map(|v| decimal(v, "bid")).transpose()?,
+                    ask_price_1: ask.map(|v| decimal(v, "ask")).transpose()?,
+                    is_kcb: Some(instrument.board.eq_ignore_ascii_case("KSH")),
+                    instrument_rules: Some(pool::StockPoolInstrumentRules {
+                        price_tick: decimal(snapshot.price_tick, "price_tick")?,
+                        quantity_step: instrument.order_step_size().into(),
+                        minimum_buy_quantity: instrument.minimum_order_quantity().into(),
+                    }),
+                    buy_sizing_price: Some(decimal(buy_price, "buy_price")?),
+                    sell_sizing_price: Some(decimal(sell_price, "sell_price")?),
+                })
+            })
+            .collect::<Result<Vec<_>, BacktestError>>()?;
+        Ok((quotes, unavailable))
+    }
+
+    fn pool_etf_fallback_reference(&self, date: NaiveDate, data: &DataSet, symbol: &str, clock: Option<NaiveDateTime>) -> Result<Option<crate::etf_execution::EtfFallbackReference>, BacktestError> {
+        if !self.matching_type_uses_intraday_quotes() || !self.has_verified_etf_minute_absence(date, symbol) {
+            return Ok(None);
+        }
+        let time = self.runtime_intraday_start_time.get().or(self.intraday_execution_start_time)
+            .ok_or_else(|| BacktestError::Execution("etf_daily_open_fallback: execution clock missing".into()))?;
+        let at = clock.unwrap_or(date.and_time(time)).max(date.and_time(time));
+        crate::etf_execution::reference(data, symbol, at).map(Some)
+    }
+
+    pub(super) fn process_stock_pool_contract(
+        &self,
+        date: NaiveDate,
+        portfolio: &mut PortfolioState,
+        data: &DataSet,
+        contract: &pool::FrozenStockPoolIntent,
+        intraday_turnover: &mut BTreeMap<String, u32>,
+        execution_cursors: &mut IntradayExecutionLedger,
+        global_execution_cursor: &mut Option<NaiveDateTime>,
+        commission_state: &mut BTreeMap<u64, f64>,
+        report: &mut BrokerExecutionReport,
+    ) -> Result<(), BacktestError> {
+        self.process_stock_pool_contract_phase(date, portfolio, data, contract, intraday_turnover,
+            execution_cursors, global_execution_cursor, commission_state, report, false, None)
+    }
+
+    fn process_stock_pool_contract_phase(
+        &self, date: NaiveDate, portfolio: &mut PortfolioState, data: &DataSet,
+        contract: &pool::FrozenStockPoolIntent, intraday_turnover: &mut BTreeMap<String, u32>,
+        execution_cursors: &mut IntradayExecutionLedger, global_execution_cursor: &mut Option<NaiveDateTime>,
+        commission_state: &mut BTreeMap<u64, f64>, report: &mut BrokerExecutionReport, buy_only: bool,
+        initial_holdings: Option<&BTreeSet<String>>,
+    ) -> Result<(), BacktestError> {
+        if contract.signal_date > date
+            || contract.frozen_equity < Decimal::ZERO
+            || contract.generation.is_empty()
+            || contract.pool_id.trim().is_empty()
+        {
+            return Err(BacktestError::Execution(
+                "stock_pool_frozen_intent_invalid".into(),
+            ));
+        }
+        if self.matching_type == MatchingType::NextBarOpen && contract.signal_date >= date {
+            return Err(BacktestError::Execution(
+                "stock_pool_next_open_requires_prior_signal".into(),
+            ));
+        }
+        let mut selection = contract.selection.clone();
+        let mut members = contract.members.clone();
+        for symbol in &contract.selection.requested_symbols {
+            let instrument = data.instruments().get(symbol).ok_or_else(|| {
+                BacktestError::Execution(format!("stock_pool_instrument_missing:{symbol}"))
+            })?;
+            if portfolio.position(symbol).is_none()
+                && let Some(reason) = instrument.dated_market_absence_reason(date)
+            {
+                selection.requested_symbols.retain(|v| v != symbol);
+                selection.normal_trading_symbols.retain(|v| v != symbol);
+                selection.risk_eligible_symbols.retain(|v| v != symbol);
+                selection.final_symbols.retain(|v| v != symbol);
+                members.retain(|v| &v.symbol != symbol);
+                report.diagnostics.push(format!(
+                    "stock_pool_market_absence symbol={symbol} date={date} reason={reason}"
+                ));
+            }
+        }
+        let mut scope = selection
+            .requested_symbols
+            .iter()
+            .cloned()
+            .collect::<BTreeSet<_>>();
+        scope.extend(portfolio.positions().keys().cloned());
+        let before_positions = initial_holdings.cloned().unwrap_or_else(|| portfolio.positions().keys().cloned().collect());
+        let official_dates = data.calendar().iter().collect::<Vec<_>>();
+        let initial_positions = pool_positions(portfolio, date)?;
+        let state = portfolio
+            .stock_pool_execution_state(&contract.pool_id)
+            .observe(
+                contract.signal_date,
+                date,
+                &official_dates,
+                &members,
+                &initial_positions,
+            )
+            .map_err(BacktestError::Execution)?;
+        portfolio
+            .set_stock_pool_execution_state(&contract.pool_id, state)
+            .map_err(BacktestError::Execution)?;
+        let superseded = self.deferred_etf_targets.borrow_mut().replace_generation(&contract.pool_id, &contract.generation);
+        if superseded > 0 { report.diagnostics.push(format!("etf_daily_open_fallback:superseded pool={} generation={} targets={superseded}", contract.pool_id, contract.generation)); }
+        if self.has_open_orders() {
+            self.deferred_stock_pools.borrow_mut().insert(contract.pool_id.clone(), DeferredStockPoolExecution {
+                date, contract: Box::new(contract.clone()), buy_only, symbols: scope, initial_holdings: before_positions,
+            });
+            report
+                .diagnostics
+                .push("stock_pool_waiting_for_active_orders no_new_intent=true".into());
+            return Ok(());
+        }
+        let mut constraints = contract.constraints.clone();
+        constraints.execution_date = Some(date);
+        constraints.frozen_positions.clear();
+        let mut quote_scope = scope.clone();
+        for symbol in &scope {
+            let paused = data.market(date, symbol).is_some_and(|row| row.paused)
+                || data
+                    .candidate(date, symbol)
+                    .is_some_and(|row| row.is_paused);
+            if !paused {
+                continue;
+            }
+            quote_scope.remove(symbol);
+            if let Some(position) = portfolio
+                .position(symbol)
+                .filter(|position| position.quantity > 0)
+            {
+                constraints.frozen_positions.insert(
+                    symbol.clone(),
+                    pool::FrozenStockPoolPosition {
+                        trade_date: date,
+                        reason: "paused".into(),
+                        valuation_price: decimal(position.last_price, "paused_holding_valuation")?,
+                    },
+                );
+            } else {
+                selection
+                    .normal_trading_symbols
+                    .retain(|item| item != symbol);
+                selection
+                    .risk_eligible_symbols
+                    .retain(|item| item != symbol);
+                selection.final_symbols.retain(|item| item != symbol);
+                selection
+                    .exclusion_reasons
+                    .entry(symbol.clone())
+                    .or_default()
+                    .push("paused".into());
+            }
+        }
+        // All delayed symbols in a generation share immutable configuration.
+        // Do not duplicate an N-member pool N times in a large mixed pool.
+        let mut deferred_configuration = None;
+        for side in [pool::OrderSide::Sell, pool::OrderSide::Buy] {
+            if buy_only && side == pool::OrderSide::Sell { continue; }
+            if side == pool::OrderSide::Buy && self.has_open_orders()
+                && self.effective_rebalance_cash_mode() == RebalanceCashMode::SellThenBuy {
+                self.deferred_stock_pools.borrow_mut().insert(contract.pool_id.clone(), DeferredStockPoolExecution {
+                    date, contract: Box::new(contract.clone()), buy_only: true, symbols: quote_scope.clone(), initial_holdings: before_positions.clone(),
+                });
+                report.diagnostics.push(format!("stock_pool_waiting_for_sell_reports generation={} no_buy_order_created=true",contract.generation));
+                break;
+            }
+            let mut fallback_references = BTreeMap::new();
+            for symbol in &quote_scope {
+                if let Some(reference) = self.pool_etf_fallback_reference(date, data, symbol, *global_execution_cursor)? {
+                    let condition = if side == pool::OrderSide::Buy { &contract.rule.buy_condition } else { &contract.rule.sell_condition };
+                    if !condition.trim().is_empty() {
+                        return Err(BacktestError::Execution(format!("etf_daily_open_fallback: intraday condition evidence unavailable symbol={symbol} side={side:?}; daily reference is not a minute or tick signal")));
+                    }
+                    fallback_references.insert(symbol.clone(), reference);
+                }
+            }
+            let (quotes, unavailable) = self.pool_quote_inputs(date, data, &quote_scope, *global_execution_cursor,
+                crate::stock_pool_quote_facts::requires_session_totals(&contract.rule))?;
+            let positions = pool_positions(portfolio, date)?;
+            let execution_state = portfolio
+                .stock_pool_execution_state(&contract.pool_id)
+                .observe(
+                    contract.signal_date,
+                    date,
+                    &official_dates,
+                    &members,
+                    &positions,
+                )
+                .map_err(BacktestError::Execution)?;
+            constraints.pending_entry_symbols = execution_state.pending_symbols();
+            constraints.prior_target_weights = execution_state.last_target_weights.clone();
+            constraints.position_action_bases = execution_state.position_action_bases_for(&contract.generation);
+            constraints.next_day_outside_exit_symbols = execution_state.next_day_exit_symbols(date);
+            let account = pool::AccountSnapshot {
+                total_equity: contract.frozen_equity,
+                cash: decimal(portfolio.cash(), "cash")?,
+                frozen_cash: Decimal::ZERO,
+            };
+            constraints.automatic_permissions.clear();
+            if contract.rule.automatic_trade_protection.enabled() {
+                for symbol in &scope {
+                    let permission = self.pool_automatic_permission(symbol, date,
+                        &contract.rule.automatic_trade_protection, portfolio, data)?;
+                    constraints
+                        .automatic_permissions
+                        .insert(symbol.clone(), permission);
+                }
+            }
+            if side == pool::OrderSide::Buy {
+                for (symbol, reference) in &fallback_references {
+                    if !reference.immediate {
+                        // The sell leg was queued, not filled. Keep its real
+                        // holdings/slots and do not finance buys with proceeds
+                        // from the following session.
+                        constraints.automatic_permissions.entry(symbol.clone()).or_default()
+                            .sell_denial.get_or_insert("etf_daily_open_deferred");
+                    }
+                }
+            }
+            if self
+                .risk_config
+                .static_rules
+                .forbid_same_day_rebuy_after_sell
+            {
+                constraints.same_day_sold_symbols.extend(
+                    self.same_day_sold_symbols
+                        .borrow()
+                        .get(&date)
+                        .into_iter()
+                        .flatten()
+                        .cloned(),
+                );
+            }
+            constraints.same_day_sold_symbols.extend(
+                before_positions
+                    .iter()
+                    .filter(|symbol| portfolio.position(symbol).is_none_or(|p| p.quantity == 0))
+                    .cloned(),
+            );
+            let fee =
+                |symbol: &str, side: pool::OrderSide, gross: Decimal| -> Result<Decimal, String> {
+                    let amount = gross
+                        .to_f64()
+                        .ok_or("stock_pool_cost_amount_out_of_range")?;
+                    decimal(
+                        self.cost_model
+                            .calculate_for_instrument(
+                                date,
+                                if side == pool::OrderSide::Buy {
+                                    OrderSide::Buy
+                                } else {
+                                    OrderSide::Sell
+                                },
+                                amount,
+                                data.instruments().get(symbol),
+                            )
+                            .total(),
+                        "fee",
+                    )
+                    .map_err(|e| e.to_string())
+                };
+            let plan = pool::build_stock_pool_target_plan_with_fee_model(
+                &selection,
+                &members,
+                &contract.rule,
+                &account,
+                &positions,
+                &quotes,
+                contract.invest_ratio_bps,
+                contract.reserve_cash,
+                &contract.out_of_pool_policy,
+                "full_rebalance",
+                &constraints,
+                &contract.generation,
+                Decimal::ZERO,
+                Decimal::ZERO,
+                Decimal::ZERO,
+                Some(&fee),
+            )
+            .map_err(|error| BacktestError::Execution(if !unavailable.is_empty()
+                && (error.contains("requires volume") || error.contains("requires amount")) {
+                    format!("{error}; {}", unavailable.join("; "))
+                } else { error }))?;
+            report.diagnostics.extend(unavailable.into_iter().map(|reason| format!("stock_pool_quote_fact_unavailable {reason}")));
+            let mut updated = execution_state
+                .record_plan(contract.signal_date, &contract.generation, &plan)
+                .map_err(BacktestError::Execution)?;
+            for (symbol, reference) in &fallback_references {
+                if !reference.immediate && let Some(entry) = updated.entries.get_mut(symbol) {
+                    // The signal only fixes money, not shares at a stale close.
+                    entry.completion_quantity = None;
+                }
+            }
+            portfolio
+                .set_stock_pool_execution_state(&contract.pool_id, updated)
+                .map_err(BacktestError::Execution)?;
+            report.diagnostics.push(format!("stock_pool_plan phase={side:?} generation={} requested_bps={} effective_bps={} budget={}",contract.generation,plan.requested_invest_ratio_bps,plan.effective_invest_ratio_bps,plan.budget));
+            let max_positions = constraints
+                .target_holding_count
+                .unwrap_or(selection.final_symbols.len());
+            for row in plan.rows {
+                if side == pool::OrderSide::Buy && row.side.is_none() {
+                    report.diagnostics.push(format!(
+                        "stock_pool_decision symbol={} status={} current={} target={} reason={}",
+                        row.symbol,
+                        row.status,
+                        row.current_quantity,
+                        row.target_quantity,
+                        row.reason
+                    ));
+                }
+                if row.side != Some(side) {
+                    continue;
+                }
+                if let Some(reference) = fallback_references.get(&row.symbol) {
+                    let time = self.runtime_intraday_start_time.get().or(self.intraday_execution_start_time).expect("fallback clock validated");
+                    let at = global_execution_cursor.unwrap_or(date.and_time(time)).max(date.and_time(time));
+                    if !reference.immediate {
+                        report.diagnostics.push(format!("etf_daily_open_fallback:deferred symbol={} signal_at={at} reference_date={} reference_price={} target_value={} execute_on={:?}", row.symbol, reference.reference_date, reference.price, row.target_value, reference.execute_on));
+                        let deferred = deferred_configuration.get_or_insert_with(|| (
+                            std::sync::Arc::new(contract.rule.clone()), std::sync::Arc::new(members.clone()),
+                        ));
+                        let opening_date=reference.execute_on.map(|day|day.to_string()).unwrap_or_else(||"回测区间外（后续日历未加载）".into());
+                        etf_activity(report,date,&row.symbol,side,format!("ETF 顺延执行：信号 {at}，参考 {} 收盘 {}，目标金额 {}，下一正式开盘日 {opening_date}；未生成成交。",reference.reference_date,reference.price,row.target_value));
+                        self.deferred_etf_targets.borrow_mut().upsert(crate::etf_execution::DeferredEtfTarget {
+                            pool_id:contract.pool_id.clone(), generation:contract.generation.clone(), symbol:row.symbol.clone(),
+                            signal_date:contract.signal_date, signal_at:at, execute_on:reference.execute_on,
+                            target_value:row.target_value, target_weight_bps:row.target_weight_bps, side,
+                            max_positions, rule:std::sync::Arc::clone(&deferred.0), members:std::sync::Arc::clone(&deferred.1),
+                            reason:row.source_intent.clone().unwrap_or_else(||"stock_pool_target".into()),
+                        });
+                        continue;
+                    }
+                }
+                if side == pool::OrderSide::Buy
+                    && portfolio
+                        .position(&row.symbol)
+                        .is_none_or(|p| p.quantity == 0)
+                    && Self::positive_position_count(portfolio) >= max_positions
+                {
+                    report.diagnostics.push(format!(
+                        "stock_pool_buy_deferred symbol={} reason=occupied_position_slots",
+                        row.symbol
+                    ));
+                    continue;
+                }
+                let target = row.target_quantity.to_i32().ok_or_else(|| {
+                    BacktestError::Execution("stock_pool_target_quantity_out_of_range".into())
+                })?;
+                let fallback_reason = fallback_references.contains_key(&row.symbol).then(|| format!("{}: etf_daily_open_fallback signal_date={} execution_date={date}", row.source_intent.as_deref().unwrap_or("stock_pool_target"), contract.signal_date));
+                let reason = fallback_reason.as_deref().unwrap_or_else(|| row.source_intent.as_deref().unwrap_or("stock_pool_target"));
+                let first_fill = report.fill_events.len();
+                if fallback_references.contains_key(&row.symbol) {
+                    report.diagnostics.push(format!("etf_daily_open_fallback:opening symbol={} signal_date={} execution_date={date}", row.symbol, contract.signal_date));
+                    etf_activity(report,date,&row.symbol,side,format!("ETF 日线开盘回退：信号日 {}，执行日 {date}，使用正式日线开盘价；不是分钟成交行情。",contract.signal_date));
+                }
+                let mut execute = || if let Some(price) = row.limit_price {
+                    self.process_limit_target_shares(
+                        date,
+                        portfolio,
+                        data,
+                        &row.symbol,
+                        target,
+                        price.to_f64().ok_or_else(|| {
+                            BacktestError::Execution("stock_pool_limit_price_out_of_range".into())
+                        })?,
+                        reason,
+                        intraday_turnover,
+                        execution_cursors,
+                        global_execution_cursor,
+                        commission_state,
+                        report,
+                    )
+                } else {
+                    self.process_target_shares(
+                        date,
+                        portfolio,
+                        data,
+                        &row.symbol,
+                        target,
+                        reason,
+                        intraday_turnover,
+                        execution_cursors,
+                        global_execution_cursor,
+                        commission_state,
+                        report,
+                    )
+                };
+                if fallback_references.contains_key(&row.symbol) {
+                    self.with_etf_daily_open(execute)?;
+                    for fill in &mut report.fill_events[first_fill..] {
+                        fill.execution_start_timestamp.get_or_insert(date.and_time(crate::etf_execution::opening_time()));
+                        fill.execution_timestamp.get_or_insert(date.and_time(crate::etf_execution::opening_time()));
+                    }
+                } else { execute()?; }
+            }
+        }
+        Ok(())
+    }
+
+    pub(crate) fn pending_etf_target_count(&self) -> usize {
+        self.deferred_etf_targets.borrow().len()
+    }
+
+    /// Called at the opening clock, after settlement/corporate actions and
+    /// auction callbacks. It never sends a stock order or replays a strategy.
+    pub(crate) fn execute_deferred_etf_targets(&self, date: NaiveDate, portfolio: &mut PortfolioState, data: &DataSet) -> Result<BrokerExecutionReport, BacktestError> {
+        self.execution_transaction(portfolio, !self.has_open_orders() && self.pending_etf_target_count() > 0, None,
+            |portfolio| self.execute_deferred_etf_targets_inner(date, portfolio, data))
+    }
+
+    fn execute_deferred_etf_targets_inner(&self, date: NaiveDate, portfolio: &mut PortfolioState, data: &DataSet) -> Result<BrokerExecutionReport, BacktestError> {
+        let mut report = BrokerExecutionReport::default();
+        if self.has_open_orders() {
+            if self.pending_etf_target_count() > 0 {
+                report.diagnostics.push("etf_daily_open_fallback:waiting_for_active_orders".into());
+            }
+            return Ok(report);
+        }
+        let due = self.deferred_etf_targets.borrow_mut().take_due(date);
+        let dates = data.calendar().iter().collect::<Vec<_>>();
+        for target in due {
+            let instrument = data.instrument(&target.symbol).ok_or_else(|| BacktestError::Execution("etf_daily_open_fallback: instrument identity missing at execution".into()))?;
+            if !instrument.is_exchange_traded_fund() { return Err(BacktestError::Execution("etf_daily_open_fallback: instrument identity changed".into())); }
+            if let Some(reason) = instrument.dated_market_absence_reason(date) {
+                report.diagnostics.push(format!("etf_daily_open_fallback:blocked symbol={} date={date} reason={reason}", target.symbol));
+                continue;
+            }
+            let snapshot = data.market(date, &target.symbol).ok_or_else(|| BacktestError::Execution(format!("etf_daily_open_fallback: daily_open_missing symbol={} date={date}", target.symbol)))?;
+            if !snapshot.open.is_finite() || snapshot.open <= 0.0 {
+                return Err(BacktestError::Execution(format!("etf_daily_open_fallback: daily_open_invalid symbol={} date={date}", target.symbol)));
+            }
+            let position = portfolio.position(&target.symbol).filter(|p| p.quantity > 0);
+            let before_quantity = position.map_or(0, |p| p.quantity);
+            let permission = self.pool_automatic_permission(&target.symbol, date,
+                &target.rule.automatic_trade_protection, portfolio, data)?;
+            let denial = if target.side == pool::OrderSide::Buy {
+                permission.buy_denial.or(permission.max_holding_exit.then_some("max_holding_exit_pending"))
+            } else { permission.sell_denial };
+            if let Some(denial) = denial {
+                report.diagnostics.push(format!("etf_daily_open_fallback:protected symbol={} date={date} reason={denial}", target.symbol));
+                etf_activity(&mut report,date,&target.symbol,target.side,format!("ETF 顺延目标受持有保护限制：{denial}；未提交委托。"));
+                continue;
+            }
+            if target.side == pool::OrderSide::Buy && before_quantity == 0 && Self::positive_position_count(portfolio) >= target.max_positions {
+                report.diagnostics.push(format!("etf_daily_open_fallback:blocked symbol={} reason=occupied_position_slots", target.symbol));
+                continue;
+            }
+            let value = target.target_value.to_f64().ok_or_else(|| BacktestError::Execution("etf_daily_open_fallback: target value out of range".into()))?;
+            let current_value = snapshot.open * f64::from(before_quantity);
+            let satisfied = (target.side == pool::OrderSide::Buy && value <= current_value)
+                || (target.side == pool::OrderSide::Sell && value >= current_value);
+            let reason = format!("{}: etf_daily_open_fallback signal_at={} execution_at={} target_value={}", target.reason, target.signal_at, date.and_time(crate::etf_execution::opening_time()), target.target_value);
+            let mut sub = BrokerExecutionReport::default();
+            if !satisfied {
+                let (_, limit) = pool::resolve_stock_pool_order_price(&target.rule, &target.symbol, decimal(snapshot.open, "etf_open")?, target.side, decimal(snapshot.price_tick, "etf_tick")?).map_err(BacktestError::Execution)?;
+                let intent = match limit {
+                    Some(limit) => OrderIntent::LimitTargetValue { symbol:target.symbol.clone(), target_value:value, limit_price:limit.to_f64().ok_or_else(|| BacktestError::Execution("ETF limit out of range".into()))?, reason:reason.clone() },
+                    None => OrderIntent::TargetValue { symbol:target.symbol.clone(), target_value:value, reason:reason.clone() },
+                };
+                let old_time = self.runtime_intraday_start_time.replace(Some(crate::etf_execution::opening_time()));
+                let old_origin = self.runtime_resting_order_origin.replace(Some(RestingOrderOrigin { created_date:Some(target.signal_at.date()), submission_time:Some(target.signal_at.time()), accepted_date:date }));
+                let outcome = self.with_etf_daily_open(|| self.execute_with_event_dates(date, target.signal_date, target.signal_at.date(), portfolio, data, &StrategyDecision {
+                    order_intents:vec![OrderIntent::WithTimeInForce { intent:Box::new(intent), time_in_force:OrderTimeInForce::Day }], ..Default::default()
+                }));
+                self.runtime_intraday_start_time.set(old_time);
+                self.runtime_resting_order_origin.set(old_origin);
+                sub = outcome?;
+            }
+            // The actual open determines the full requested shares. A clipped
+            // or rejected execution must not be recorded as completed entry.
+            let order = sub.order_events.iter().rev().find(|order| order.symbol == target.symbol);
+            let goal_quantity = order.map_or(before_quantity, |order| match order.side {
+                OrderSide::Buy => before_quantity.saturating_add(order.requested_quantity),
+                OrderSide::Sell => before_quantity.saturating_sub(order.requested_quantity),
+            });
+            let status = if satisfied || (order.is_none() && !self.has_open_orders()) { "BELOW_MINIMUM_TRADE_UNIT_ALREADY_SATISFIED" } else { "READY" };
+            let positions = pool_positions(portfolio, date)?;
+            let state = portfolio.stock_pool_execution_state(&target.pool_id)
+                .observe(target.signal_date, date, &dates, &target.members, &positions).map_err(BacktestError::Execution)?
+                .record_targets(target.signal_date, &target.generation, [crate::stock_pool_state::StockPoolGoalObservation {
+                    symbol:&target.symbol, target_weight_bps:target.target_weight_bps, target_value:target.target_value,
+                    current_quantity:before_quantity.into(), target_quantity:goal_quantity.into(), status,
+                }]).map_err(BacktestError::Execution)?
+                .observe(target.signal_date, date, &dates, &target.members, &positions).map_err(BacktestError::Execution)?;
+            portfolio.set_stock_pool_execution_state(&target.pool_id, state).map_err(BacktestError::Execution)?;
+            for fill in &mut sub.fill_events {
+                fill.decision_date.get_or_insert(target.signal_date);
+                fill.order_created_date.get_or_insert(target.signal_at.date());
+                fill.execution_date.get_or_insert(date);
+                fill.execution_start_timestamp.get_or_insert(date.and_time(crate::etf_execution::opening_time()));
+                fill.execution_timestamp.get_or_insert(date.and_time(crate::etf_execution::opening_time()));
+            }
+            for order in &mut sub.order_events {
+                order.decision_date.get_or_insert(target.signal_date);
+                order.order_created_date.get_or_insert(target.signal_at.date());
+                order.execution_date.get_or_insert(date);
+            }
+            report.diagnostics.push(reason);
+            etf_activity(&mut report,date,&target.symbol,target.side,format!("ETF 顺延目标开盘处理：原信号 {}，本次 {date} 09:30，冻结目标金额 {}，持仓 {before_quantity} → {}；按本日开盘价、资金与风控重新定量。",target.signal_at,target.target_value,portfolio.position(&target.symbol).map_or(0,|position|position.quantity)));
+            report.order_events.extend(sub.order_events);
+            report.fill_events.extend(sub.fill_events);
+            report.position_events.extend(sub.position_events);
+            report.account_events.extend(sub.account_events);
+            report.process_events.extend(sub.process_events);
+            report.diagnostics.extend(sub.diagnostics);
+        }
+        Ok(report)
+    }
+}

crates/fidc-core/src/broker_stock_pool_batch_tests.rs

@@ -0,0 +1,684 @@
+fn pool_batch_data() -> DataSet {
+    pool_batch_data_with(|_| true)
+}
+
+fn pool_batch_data_with(change: impl Fn(&mut IntradayExecutionQuote) -> bool) -> DataSet {
+    let symbols = ["000001.SZ", "000002.SZ", "000003.SZ"];
+    let instruments = symbols
+        .iter()
+        .map(|symbol| Instrument {
+            symbol: (*symbol).into(),
+            ..limit_test_instrument()
+        })
+        .collect();
+    let snapshots = symbols
+        .iter()
+        .map(|symbol| DailyMarketSnapshot {
+            symbol: (*symbol).into(),
+            ..limit_test_snapshot()
+        })
+        .collect();
+    let candidates = symbols
+        .iter()
+        .map(|symbol| CandidateEligibility {
+            symbol: (*symbol).into(),
+            ..limit_test_candidate(true, true)
+        })
+        .collect();
+    let mut quotes = Vec::new();
+    for minute in [30, 31, 32, 33, 34, 36] {
+        for symbol in symbols {
+            let price = if symbol == "000001.SZ" && minute > 30 {
+                10.5
+            } else {
+                10.0
+            };
+            let mut quote = limit_test_quote(price, price, price);
+            quote.symbol = symbol.into();
+            quote.timestamp = quote.date.and_hms_opt(9, minute, 0).unwrap();
+            quote.volume_delta = 200;
+            quote.bid1_volume = 200;
+            quote.ask1_volume = 200;
+            quote.amount_delta = price * 200.0;
+            if change(&mut quote) {
+                quotes.push(quote);
+            }
+        }
+    }
+    DataSet::from_components_with_actions_and_quotes(
+        instruments,
+        snapshots,
+        Vec::new(),
+        candidates,
+        vec![limit_test_benchmark()],
+        Vec::new(),
+        quotes,
+    )
+    .unwrap()
+    .with_additional_trading_dates([chrono::NaiveDate::from_ymd_opt(2024, 12, 31).unwrap()])
+}
+
+fn pool_batch_decision(symbol: &str, generation: &str, end: &str) -> StrategyDecision {
+    use crate::stock_pool_execution as pool;
+    let signal = chrono::NaiveDate::from_ymd_opt(2024, 12, 31).unwrap();
+    let symbols = vec![symbol.to_owned()];
+    let rule = pool::StockPoolExecutionRule {
+        pricing_mode: pool::POOL_PRICE_FIXED_LIMIT.into(),
+        fixed_prices: [
+            ("000001.SZ".into(), rust_decimal::Decimal::new(104, 1)),
+            ("000002.SZ".into(), 10.into()),
+            ("000003.SZ".into(), 10.into()),
+        ]
+        .into(),
+        window_end: end.into(),
+        ..Default::default()
+    };
+    StrategyDecision {
+        order_intents: vec![OrderIntent::StockPool {
+            contract: Box::new(pool::FrozenStockPoolIntent {
+                pool_id: "batch-test".into(),
+                signal_date: signal,
+                frozen_equity: 2000.into(),
+                selection: pool::StockPoolSelection {
+                    trade_date: signal,
+                    requested_symbols: symbols.clone(),
+                    normal_trading_symbols: symbols.clone(),
+                    risk_eligible_symbols: symbols.clone(),
+                    final_symbols: symbols,
+                    exclusion_reasons: Default::default(),
+                    inherited_from_generation: None,
+                    explicit_empty: false,
+                    generation: Some(generation.into()),
+                },
+                members: vec![pool::StockPoolMemberSpec {
+                    symbol: symbol.into(),
+                    recommendation_reason: String::new(),
+                    requested_order: 0,
+                    target_weight_bps: None,
+                    stop_loss: None,
+                    take_profit: None,
+                }],
+                rule,
+                constraints: pool::StockPoolDecisionConstraints {
+                    target_holding_count: Some(1),
+                    ..Default::default()
+                },
+                invest_ratio_bps: 10000,
+                reserve_cash: 0.into(),
+                out_of_pool_policy: "reduce_to_zero_when_sellable".into(),
+                generation: generation.into(),
+            }),
+        }],
+        ..Default::default()
+    }
+}
+
+fn pool_batch_broker(partial: bool) -> BrokerSimulator<ChinaAShareCostModel, ChinaEquityRuleHooks> {
+    let cost = ChinaAShareCostModel::from_trading_constraints(
+        crate::risk_control::TradingConstraintConfig {
+            commission_rate: 0.0,
+            minimum_commission: 0.0,
+            stamp_tax_rate_before_change: 0.0,
+            stamp_tax_rate_after_change: 0.0,
+            transfer_fee_rate: 0.0,
+            ..Default::default()
+        },
+    );
+    let broker =
+        BrokerSimulator::new_with_execution_price(cost, ChinaEquityRuleHooks, PriceField::Open)
+            .with_matching_type(if partial {
+                MatchingType::MinuteLast
+            } else {
+                MatchingType::NextBarOpen
+            })
+            .with_volume_limit(partial)
+            .with_volume_percent(0.5)
+            .with_liquidity_limit(false)
+            .with_inactive_limit(false);
+    if partial {
+        broker
+            .with_intraday_execution_start_time(chrono::NaiveTime::from_hms_opt(9, 30, 0).unwrap())
+    } else {
+        broker
+    }
+}
+
+fn pool_batch_account() -> PortfolioState {
+    let mut account = PortfolioState::new(0.0);
+    account.position_mut("000001.SZ").buy(
+        chrono::NaiveDate::from_ymd_opt(2024, 12, 30).unwrap(),
+        200,
+        10.0,
+    );
+    account
+}
+
+fn pool_batch_tick(
+    broker: &BrokerSimulator<ChinaAShareCostModel, ChinaEquityRuleHooks>,
+    account: &mut PortfolioState,
+    data: &DataSet,
+    minute: u32,
+    decision: &StrategyDecision,
+) -> BrokerExecutionReport {
+    let date = chrono::NaiveDate::from_ymd_opt(2025, 1, 2).unwrap();
+    broker
+        .runtime_intraday_start_time
+        .set(Some(chrono::NaiveTime::from_hms_opt(9, minute, 0).unwrap()));
+    broker
+        .runtime_intraday_end_time
+        .set(Some(chrono::NaiveTime::from_hms_opt(9, minute, 0).unwrap()));
+    broker.execute(date, account, data, decision).unwrap()
+}
+
+#[test]
+fn stock_pool_pending_sell_continues_buy_after_actual_fill_without_strategy_rerun() {
+    let date = chrono::NaiveDate::from_ymd_opt(2025, 1, 2).unwrap();
+    let signal = chrono::NaiveDate::from_ymd_opt(2024, 12, 31).unwrap();
+    let data = pool_batch_data();
+    let broker = pool_batch_broker(false);
+    let mut account = pool_batch_account();
+    let initial = broker
+        .execute_with_event_dates(
+            date,
+            signal,
+            signal,
+            &mut account,
+            &data,
+            &pool_batch_decision("000002.SZ", "first", "09:35"),
+        )
+        .unwrap();
+    assert!(initial.fill_events.is_empty());
+    assert_eq!(broker.open_order_views().len(), 1);
+    assert_eq!(broker.open_order_views()[0].side, OrderSide::Sell);
+    let done = pool_batch_tick(
+        &broker,
+        &mut account,
+        &data,
+        31,
+        &StrategyDecision::default(),
+    );
+    assert!(
+        done.fill_events
+            .iter()
+            .any(|fill| fill.symbol == "000001.SZ" && fill.side == OrderSide::Sell)
+    );
+    assert_eq!(
+        account.position("000002.SZ").map(|p| p.quantity),
+        Some(200),
+        "sell proceeds must trigger the retained buy phase: {:?}",
+        done.diagnostics
+    );
+    assert!(
+        account
+            .position("000001.SZ")
+            .is_none_or(|p| p.quantity == 0)
+    );
+    let repeated = pool_batch_tick(
+        &broker,
+        &mut account,
+        &data,
+        32,
+        &StrategyDecision::default(),
+    );
+    assert!(repeated.order_events.is_empty() && repeated.fill_events.is_empty());
+}
+
+#[test]
+fn stock_pool_partial_sell_waits_for_the_whole_batch_and_never_reissues_buys() {
+    let date = chrono::NaiveDate::from_ymd_opt(2025, 1, 2).unwrap();
+    let signal = chrono::NaiveDate::from_ymd_opt(2024, 12, 31).unwrap();
+    let data = pool_batch_data();
+    let broker = pool_batch_broker(true);
+    let mut account = pool_batch_account();
+    broker
+        .execute_with_event_dates(
+            date,
+            signal,
+            signal,
+            &mut account,
+            &data,
+            &pool_batch_decision("000002.SZ", "partial", "09:35"),
+        )
+        .unwrap();
+    let first = pool_batch_tick(
+        &broker,
+        &mut account,
+        &data,
+        31,
+        &StrategyDecision::default(),
+    );
+    assert_eq!(account.position("000001.SZ").unwrap().quantity, 100);
+    assert!(account.position("000002.SZ").is_none());
+    assert!(
+        first
+            .order_events
+            .iter()
+            .all(|event| event.side == OrderSide::Sell)
+    );
+    let second = pool_batch_tick(
+        &broker,
+        &mut account,
+        &data,
+        32,
+        &StrategyDecision::default(),
+    );
+    let third = pool_batch_tick(
+        &broker,
+        &mut account,
+        &data,
+        33,
+        &StrategyDecision::default(),
+    );
+    assert_eq!(account.position("000002.SZ").unwrap().quantity, 200);
+    let ids = second
+        .order_events
+        .iter()
+        .chain(&third.order_events)
+        .filter(|event| event.side == OrderSide::Buy)
+        .filter_map(|event| event.order_id)
+        .collect::<std::collections::BTreeSet<_>>();
+    assert_eq!(
+        ids.len(),
+        1,
+        "one buy intention; partial reports must keep its ID"
+    );
+    assert!(
+        pool_batch_tick(
+            &broker,
+            &mut account,
+            &data,
+            34,
+            &StrategyDecision::default()
+        )
+        .order_events
+        .is_empty()
+    );
+}
+
+#[test]
+fn stock_pool_delayed_sell_does_not_start_buys_after_the_configured_window() {
+    let date = chrono::NaiveDate::from_ymd_opt(2025, 1, 2).unwrap();
+    let signal = chrono::NaiveDate::from_ymd_opt(2024, 12, 31).unwrap();
+    let data = pool_batch_data();
+    let broker = pool_batch_broker(true);
+    let mut account = pool_batch_account();
+    broker
+        .execute_with_event_dates(
+            date,
+            signal,
+            signal,
+            &mut account,
+            &data,
+            &pool_batch_decision("000002.SZ", "expired", "09:32"),
+        )
+        .unwrap();
+    pool_batch_tick(
+        &broker,
+        &mut account,
+        &data,
+        31,
+        &StrategyDecision::default(),
+    );
+    let last = pool_batch_tick(
+        &broker,
+        &mut account,
+        &data,
+        32,
+        &StrategyDecision::default(),
+    );
+    assert!(account.position("000002.SZ").is_none());
+    assert!(
+        last.order_events
+            .iter()
+            .all(|event| event.side == OrderSide::Sell)
+    );
+    assert!(
+        last.diagnostics
+            .iter()
+            .any(|event| event.contains("unsubmitted_phase_expired"))
+    );
+    assert!(!broker.has_pending_stock_pool_execution());
+}
+
+#[test]
+fn stock_pool_new_signal_supersedes_the_unsubmitted_buy_phase() {
+    let date = chrono::NaiveDate::from_ymd_opt(2025, 1, 2).unwrap();
+    let signal = chrono::NaiveDate::from_ymd_opt(2024, 12, 31).unwrap();
+    let data = pool_batch_data();
+    let broker = pool_batch_broker(true);
+    let mut account = pool_batch_account();
+    broker
+        .execute_with_event_dates(
+            date,
+            signal,
+            signal,
+            &mut account,
+            &data,
+            &pool_batch_decision("000002.SZ", "old", "09:35"),
+        )
+        .unwrap();
+    pool_batch_tick(
+        &broker,
+        &mut account,
+        &data,
+        31,
+        &pool_batch_decision("000003.SZ", "new", "09:35"),
+    );
+    pool_batch_tick(
+        &broker,
+        &mut account,
+        &data,
+        32,
+        &StrategyDecision::default(),
+    );
+    pool_batch_tick(
+        &broker,
+        &mut account,
+        &data,
+        33,
+        &StrategyDecision::default(),
+    );
+    assert!(account.position("000002.SZ").is_none());
+    assert_eq!(account.position("000003.SZ").unwrap().quantity, 200);
+    assert!(!broker.has_pending_stock_pool_execution());
+}
+
+#[test]
+fn stock_pool_after_sell_uses_fresh_quotes_and_actual_submission_clock() {
+    let date = chrono::NaiveDate::from_ymd_opt(2025, 1, 2).unwrap();
+    let signal = chrono::NaiveDate::from_ymd_opt(2024, 12, 31).unwrap();
+    let data = pool_batch_data_with(|quote| {
+        if quote.symbol == "000002.SZ" {
+            quote.last_price = 10.2;
+            quote.bid1 = 10.2;
+            quote.ask1 = 10.2;
+            quote.amount_delta = 2040.0;
+        }
+        true
+    });
+    let broker = pool_batch_broker(false);
+    let mut account = pool_batch_account();
+    let mut decision = pool_batch_decision("000002.SZ", "fresh", "09:35");
+    if let OrderIntent::StockPool { contract } = &mut decision.order_intents[0] {
+        contract.rule.pricing_mode = crate::stock_pool_execution::POOL_PRICE_FORMULA_LIMIT.into();
+        contract.rule.sell_offset_bps = 400;
+    }
+    broker
+        .execute_with_event_dates(date, signal, signal, &mut account, &data, &decision)
+        .unwrap();
+    let result = pool_batch_tick(
+        &broker,
+        &mut account,
+        &data,
+        31,
+        &StrategyDecision::default(),
+    );
+    assert_eq!(
+        account.position("000002.SZ").unwrap().quantity,
+        100,
+        "2000/10.2 rounds to one 100-share lot, not 200 at stale open"
+    );
+    let fill = result
+        .fill_events
+        .iter()
+        .find(|fill| fill.symbol == "000002.SZ")
+        .unwrap();
+    assert_eq!(fill.price, 10.2);
+    assert_eq!(
+        fill.execution_start_timestamp,
+        Some(date.and_hms_opt(9, 31, 0).unwrap())
+    );
+    let event = result
+        .order_events
+        .iter()
+        .find(|event| event.side == OrderSide::Buy)
+        .unwrap();
+    assert_eq!(event.decision_date, Some(signal));
+    assert_eq!(event.order_created_date, Some(date));
+}
+
+#[test]
+fn stock_pool_after_sell_rejects_missing_quote_instead_of_reusing_daily_open() {
+    let date = chrono::NaiveDate::from_ymd_opt(2025, 1, 2).unwrap();
+    let signal = chrono::NaiveDate::from_ymd_opt(2024, 12, 31).unwrap();
+    let data = pool_batch_data_with(|quote| quote.symbol != "000002.SZ");
+    let broker = pool_batch_broker(false);
+    let mut account = pool_batch_account();
+    broker
+        .execute_with_event_dates(
+            date,
+            signal,
+            signal,
+            &mut account,
+            &data,
+            &pool_batch_decision("000002.SZ", "missing", "09:35"),
+        )
+        .unwrap();
+    broker
+        .runtime_intraday_start_time
+        .set(Some(chrono::NaiveTime::from_hms_opt(9, 31, 0).unwrap()));
+    broker
+        .runtime_intraday_end_time
+        .set(Some(chrono::NaiveTime::from_hms_opt(9, 31, 0).unwrap()));
+    let error = broker
+        .execute(date, &mut account, &data, &StrategyDecision::default())
+        .unwrap_err();
+    assert!(
+        error
+            .to_string()
+            .contains("stock_pool_execution_quote_missing:000002.SZ"),
+        "{error}"
+    );
+    assert!(account.position("000002.SZ").is_none());
+}
+
+#[test]
+fn stock_pool_delayed_take_profit_does_not_rebuy_the_same_generation_exit() {
+    let date = chrono::NaiveDate::from_ymd_opt(2025, 1, 2).unwrap();
+    let signal = chrono::NaiveDate::from_ymd_opt(2024, 12, 31).unwrap();
+    let data = pool_batch_data();
+    let broker = pool_batch_broker(false);
+    let mut account = PortfolioState::new(0.0);
+    account.position_mut("000001.SZ").buy(
+        chrono::NaiveDate::from_ymd_opt(2024, 12, 30).unwrap(),
+        200,
+        9.0,
+    );
+    let mut decision = pool_batch_decision("000002.SZ", "take-profit", "09:35");
+    if let OrderIntent::StockPool { contract } = &mut decision.order_intents[0] {
+        let symbols = vec!["000001.SZ".to_owned(), "000002.SZ".to_owned()];
+        contract.selection.requested_symbols = symbols.clone();
+        contract.selection.normal_trading_symbols = symbols.clone();
+        contract.selection.risk_eligible_symbols = symbols.clone();
+        contract.selection.final_symbols = symbols;
+        contract.constraints.target_holding_count = Some(2);
+        contract.members.insert(
+            0,
+            crate::stock_pool_execution::StockPoolMemberSpec {
+                symbol: "000001.SZ".into(),
+                recommendation_reason: String::new(),
+                requested_order: 0,
+                target_weight_bps: None,
+                stop_loss: None,
+                take_profit: Some(rust_decimal::Decimal::new(5, 2)),
+            },
+        );
+        contract.members[1].requested_order = 1;
+    }
+    broker
+        .execute_with_event_dates(date, signal, signal, &mut account, &data, &decision)
+        .unwrap();
+    let result = pool_batch_tick(
+        &broker,
+        &mut account,
+        &data,
+        31,
+        &StrategyDecision::default(),
+    );
+    assert!(
+        account
+            .position("000001.SZ")
+            .is_none_or(|p| p.quantity == 0)
+    );
+    assert_eq!(account.position("000002.SZ").unwrap().quantity, 200);
+    assert!(
+        !result
+            .order_events
+            .iter()
+            .any(|event| event.symbol == "000001.SZ" && event.side == OrderSide::Buy)
+    );
+}
+
+#[test]
+fn stock_pool_pending_phase_cannot_cross_the_execution_session() {
+    let date = chrono::NaiveDate::from_ymd_opt(2025, 1, 2).unwrap();
+    let signal = chrono::NaiveDate::from_ymd_opt(2024, 12, 31).unwrap();
+    let data = pool_batch_data();
+    let broker = pool_batch_broker(false);
+    let mut account = pool_batch_account();
+    let mut report = broker
+        .execute_with_event_dates(
+            date,
+            signal,
+            signal,
+            &mut account,
+            &data,
+            &pool_batch_decision("000002.SZ", "end", "09:35"),
+        )
+        .unwrap();
+    assert!(broker.has_pending_stock_pool_execution());
+    broker.finish_stock_pool_session(date, &mut report);
+    assert!(!broker.has_pending_stock_pool_execution());
+    assert!(
+        report
+            .diagnostics
+            .iter()
+            .any(|event| event.contains("unsubmitted_phase_expired"))
+    );
+    assert_eq!(
+        broker.open_order_views().len(),
+        1,
+        "session cleanup preserves broker order history and remainder"
+    );
+}
+
+#[test]
+fn stock_pool_engine_drives_the_pending_buy_without_a_minute_strategy_callback() {
+    use crate::{BacktestConfig, BacktestEngine, BacktestError, Strategy, StrategyContext};
+    struct DailyPool;
+    impl Strategy for DailyPool {
+        fn name(&self) -> &str {
+            "daily-pool-batch"
+        }
+        fn requires_minute_callbacks(&self) -> bool {
+            false
+        }
+        fn schedule_rules(&self) -> Vec<crate::ScheduleRule> {
+            vec![
+                crate::ScheduleRule::daily("open", crate::ScheduleStage::OnDay)
+                    .with_time_rule(crate::ScheduleTimeRule::physical_time(9, 30)),
+            ]
+        }
+        fn on_scheduled(
+            &mut self,
+            ctx: &StrategyContext<'_>,
+            _: &crate::ScheduleRule,
+        ) -> Result<StrategyDecision, BacktestError> {
+            if ctx.execution_date.day() == 2 {
+                Ok(StrategyDecision {
+                    order_intents: vec![OrderIntent::LimitTargetShares {
+                        symbol: "000001.SZ".into(),
+                        target_quantity: 200,
+                        limit_price: 10.0,
+                        reason: "initial-entry".into(),
+                    }],
+                    ..Default::default()
+                })
+            } else {
+                Ok(pool_batch_decision("000002.SZ", "rotation", "09:35"))
+            }
+        }
+        fn on_minute(
+            &mut self,
+            _: &StrategyContext<'_>,
+            _: &IntradayExecutionQuote,
+        ) -> Result<StrategyDecision, BacktestError> {
+            panic!("this daily strategy must not be rerun to continue a pending batch")
+        }
+    }
+    use chrono::Datelike;
+    let first = chrono::NaiveDate::from_ymd_opt(2025, 1, 2).unwrap();
+    let last = chrono::NaiveDate::from_ymd_opt(2025, 1, 3).unwrap();
+    let base = pool_batch_data();
+    let mut market = Vec::new();
+    let mut factors = Vec::new();
+    let mut candidates = Vec::new();
+    let mut benchmarks = Vec::new();
+    let mut quotes = Vec::new();
+    for date in [first, last] {
+        for symbol in ["000001.SZ", "000002.SZ", "000003.SZ"] {
+            let mut row = base.market(first, symbol).unwrap().clone();
+            row.date = date;
+            market.push(row);
+            let mut row = base.candidate(first, symbol).unwrap().clone();
+            row.date = date;
+            candidates.push(row);
+            factors.push(crate::data::DailyFactorSnapshot {
+                date,
+                symbol: symbol.into(),
+                market_cap_bn: 10.,
+                free_float_cap_bn: 10.,
+                pe_ttm: 10.,
+                turnover_ratio: None,
+                effective_turnover_ratio: None,
+                adjustment_factor_backward1: Some(1.),
+                extra_factors: Default::default(),
+            });
+            for original in base.execution_quotes_on(first, symbol) {
+                let mut quote = original.clone();
+                quote.date = date;
+                quote.timestamp = date.and_time(original.timestamp.time());
+                quotes.push(quote);
+            }
+        }
+        let mut row = limit_test_benchmark();
+        row.date = date;
+        benchmarks.push(row);
+    }
+    let data = DataSet::from_components_with_actions_and_quotes(
+        base.instruments().values().cloned().collect(),
+        market,
+        factors,
+        candidates,
+        benchmarks,
+        Vec::new(),
+        quotes,
+    )
+    .unwrap()
+    .with_additional_trading_dates([chrono::NaiveDate::from_ymd_opt(2024, 12, 31).unwrap()]);
+    let config = BacktestConfig {
+        initial_cash: 2000.0,
+        benchmark_code: "000852.SH".into(),
+        start_date: Some(first),
+        end_date: Some(last),
+        decision_lag_trading_days: 0,
+        execution_price_field: PriceField::Open,
+    };
+    let result = BacktestEngine::new(data, DailyPool, pool_batch_broker(false), config)
+        .run()
+        .unwrap();
+    assert_eq!(
+        result.fills.len(),
+        3,
+        "initial buy, delayed sell, resumed buy: orders={:?} equity={:?}",
+        result.order_events,
+        result.equity_curve
+    );
+    assert_eq!(result.fills[2].symbol, "000002.SZ");
+    assert_eq!(result.fills[2].quantity, 200);
+    assert_eq!(
+        result.fills[2].execution_timestamp,
+        Some(last.and_hms_opt(9, 31, 0).unwrap())
+    );
+    assert_eq!(result.holdings_summary.len(), 1);
+}

crates/fidc-core/src/corporate_book.rs

@@ -0,0 +1,868 @@
+use crate::{
+    AccountEvent, BacktestError, BrokerExecutionReport, CashReceivable, DataSet, FillEvent,
+    OrderSide, PortfolioState, PositionEvent, PriceField, ProcessEvent, ProcessEventKind,
+};
+use chrono::{NaiveDate, TimeZone};
+
+pub(crate) fn validate_action<'a>(
+    action: &'a crate::CorporateAction,
+    data: &DataSet,
+) -> Result<Option<(&'a str, f64, f64)>, String> {
+    let terms = action.validated_successor_terms()?;
+    crate::finite_serialization::validate(action).map_err(|error| {
+        format!(
+            "corporate_action_invalid_number: symbol={} action_date={} detail={error}",
+            action.symbol, action.date
+        )
+    })?;
+    if let Some((successor, _, _)) = terms {
+        for (symbol, role) in [(&*action.symbol, "source"), (successor, "successor")] {
+            if data.instrument(symbol).is_none() {
+                return Err(format!(
+                    "corporate_action_{role}_instrument_missing: symbol={symbol} action_date={} source_symbol={}",
+                    action.date, action.symbol
+                ));
+            }
+        }
+    }
+    Ok(terms)
+}
+
+/// One corporate-action calculation for normal processing and audited replay.
+pub(crate) fn apply(
+    date: NaiveDate,
+    data: &DataSet,
+    portfolio: &mut PortfolioState,
+    notes: &mut Vec<String>,
+    cash_dividends_enabled: bool,
+    cash_dividend_adjusts_cost_basis: bool,
+) -> Result<BrokerExecutionReport, BacktestError> {
+    let actions = data.corporate_actions_on(date);
+    for action in actions {
+        validate_action(action, data).map_err(BacktestError::Execution)?;
+    }
+    if !actions.iter().any(|action| {
+        action.has_effect()
+            && portfolio
+                .position(&action.symbol)
+                .is_some_and(|position| position.quantity > 0)
+    }) {
+        return Ok(BrokerExecutionReport::default());
+    }
+    // An entire settlement batch is a single ledger update. A later invalid
+    // cash leg must not leave an earlier split, receivable, target unit, or
+    // note applied to the observed account.
+    let mut next = portfolio.clone();
+    let mut recorded = Vec::new();
+    let report = apply_inner(
+        date,
+        data,
+        &mut next,
+        &mut recorded,
+        cash_dividends_enabled,
+        cash_dividend_adjusts_cost_basis,
+    )?;
+    *portfolio = next;
+    notes.extend(recorded);
+    Ok(report)
+}
+
+fn apply_inner(
+    date: NaiveDate,
+    data: &DataSet,
+    portfolio: &mut PortfolioState,
+    notes: &mut Vec<String>,
+    cash_dividends_enabled: bool,
+    cash_dividend_adjusts_cost_basis: bool,
+) -> Result<BrokerExecutionReport, BacktestError> {
+    let mut report = BrokerExecutionReport::default();
+    for action in data.corporate_actions_on(date) {
+        if !action.has_effect() {
+            continue;
+        }
+        let Some(existing_position) = portfolio.position(&action.symbol) else {
+            continue;
+        };
+        if existing_position.quantity == 0 {
+            continue;
+        }
+
+        if cash_dividends_enabled && action.share_cash.abs() > f64::EPSILON {
+            let cash_before = portfolio.cash();
+            let (cash_delta, quantity_after, average_cost) = {
+                let position = portfolio
+                    .position_mut_if_exists(&action.symbol)
+                    .expect("position exists for dividend action");
+                let cash_delta = if cash_dividend_adjusts_cost_basis {
+                    position.apply_cash_dividend(action.share_cash)
+                } else {
+                    position.apply_cash_dividend_preserve_cost_basis(action.share_cash)
+                };
+                (cash_delta, position.quantity, position.average_cost)
+            };
+            if cash_delta.abs() > f64::EPSILON {
+                let payable_date = action.payable_date.unwrap_or(date);
+                portfolio.add_cash_receivable(CashReceivable {
+                    symbol: action.symbol.clone(),
+                    ex_date: date,
+                    payable_date,
+                    amount: cash_delta,
+                    reason: format!("cash_dividend {:.6}", action.share_cash),
+                });
+                let note = format!(
+                    "cash_dividend_receivable {} share_cash={:.6} quantity={} payable_date={} cash={:.2}",
+                    action.symbol, action.share_cash, quantity_after, payable_date, cash_delta
+                );
+                notes.push(note.clone());
+                report.account_events.push(AccountEvent {
+                    date,
+                    cash_before,
+                    cash_after: portfolio.cash(),
+                    total_equity: portfolio.total_equity(),
+                    note,
+                });
+                report.position_events.push(PositionEvent {
+                    date,
+                    symbol: action.symbol.clone(),
+                    delta_quantity: 0,
+                    quantity_after,
+                    average_cost,
+                    realized_pnl_delta: 0.0,
+                    reason: format!("cash_dividend {:.6}", action.share_cash),
+                });
+            }
+        }
+
+        let split_ratio = action.split_ratio();
+        if (split_ratio - 1.0).abs() > f64::EPSILON {
+            checked_quantity(
+                &action.symbol,
+                date,
+                portfolio
+                    .position(&action.symbol)
+                    .expect("position exists for split")
+                    .quantity,
+                split_ratio,
+                0,
+            )?;
+            portfolio
+                .adjust_stock_pool_split(&action.symbol, split_ratio)
+                .map_err(BacktestError::Execution)?;
+            let (delta_quantity, quantity_after, average_cost) = {
+                let position = portfolio
+                    .position_mut_if_exists(&action.symbol)
+                    .expect("position exists for split action");
+                let delta_quantity = position.apply_split_ratio(split_ratio);
+                (delta_quantity, position.quantity, position.average_cost)
+            };
+            if delta_quantity != 0 {
+                let note = format!(
+                    "stock_split {} ratio={:.6} delta_qty={}",
+                    action.symbol, split_ratio, delta_quantity
+                );
+                notes.push(note);
+                report.position_events.push(PositionEvent {
+                    date,
+                    symbol: action.symbol.clone(),
+                    delta_quantity,
+                    quantity_after,
+                    average_cost,
+                    realized_pnl_delta: 0.0,
+                    reason: format!("stock_split {:.6}", split_ratio),
+                });
+            }
+        }
+
+        if let Some((successor_symbol, ratio, cash_per_share)) = action
+            .validated_successor_terms()
+            .map_err(BacktestError::Execution)?
+        {
+            checked_quantity(
+                &action.symbol,
+                date,
+                portfolio
+                    .position(&action.symbol)
+                    .expect("position exists for conversion")
+                    .quantity,
+                ratio,
+                portfolio
+                    .position(successor_symbol)
+                    .map_or(0, |position| position.quantity),
+            )?;
+            let Some(outcome) = portfolio.apply_successor_conversion(
+                &action.symbol,
+                successor_symbol,
+                ratio,
+                cash_per_share,
+            ) else {
+                continue;
+            };
+            let reason = format!(
+                "successor_conversion {}->{} ratio={:.6} cash_per_share={:.6}",
+                outcome.old_symbol, outcome.new_symbol, ratio, cash_per_share
+            );
+            notes.push(reason.clone());
+            report.position_events.push(PositionEvent {
+                date,
+                symbol: outcome.old_symbol.clone(),
+                delta_quantity: -(outcome.old_quantity as i32),
+                quantity_after: 0,
+                average_cost: 0.0,
+                realized_pnl_delta: 0.0,
+                reason: reason.clone(),
+            });
+            report.position_events.push(PositionEvent {
+                date,
+                symbol: outcome.new_symbol.clone(),
+                delta_quantity: outcome.new_quantity_delta,
+                quantity_after: outcome.new_quantity_after,
+                average_cost: outcome.new_average_cost_after,
+                realized_pnl_delta: 0.0,
+                reason: reason.clone(),
+            });
+            if outcome.cash_delta.abs() > f64::EPSILON {
+                let cash_before = portfolio.cash();
+                portfolio
+                    .apply_cash_delta(outcome.cash_delta)
+                    .map_err(BacktestError::Execution)?;
+                report.account_events.push(AccountEvent {
+                    date,
+                    cash_before,
+                    cash_after: portfolio.cash(),
+                    total_equity: portfolio.total_equity(),
+                    note: format!("{} cash={:.2}", reason, outcome.cash_delta),
+                });
+            }
+        }
+    }
+
+    portfolio.prune_flat_positions();
+    Ok(report)
+}
+
+fn checked_quantity(
+    symbol: &str,
+    date: NaiveDate,
+    quantity: u32,
+    ratio: f64,
+    merged: u32,
+) -> Result<(), BacktestError> {
+    let scaled = (f64::from(quantity) * ratio).round();
+    if !scaled.is_finite()
+        || scaled < 0.
+        || scaled > f64::from(i32::MAX)
+        || scaled + f64::from(merged) > f64::from(u32::MAX)
+    {
+        return Err(BacktestError::Execution(format!(
+            "corporate_action_quantity_overflow: symbol={symbol} action_date={date}"
+        )));
+    }
+    Ok(())
+}
+/// Preserve the declared fee-free accounting allocation model; this does not
+/// submit a market order or use a later opening quote as an earlier fact.
+pub(crate) fn settle_receivables(
+    date: NaiveDate,
+    data: &DataSet,
+    portfolio: &mut PortfolioState,
+    notes: &mut Vec<String>,
+    reinvest_enabled: bool,
+    runtime_input: Option<&crate::manual_execution::ManualExecutionReplay>,
+) -> Result<BrokerExecutionReport, BacktestError> {
+    if !portfolio
+        .cash_receivables()
+        .iter()
+        .any(|row| row.payable_date <= date)
+    {
+        return Ok(BrokerExecutionReport::default());
+    }
+    let mut next = portfolio.clone();
+    let mut recorded = Vec::new();
+    let control = if reinvest_enabled {
+        manual_reinvestment_control(date, runtime_input)?
+    } else {
+        None
+    };
+    let report = settle_receivables_inner(
+        date,
+        data,
+        &mut next,
+        &mut recorded,
+        reinvest_enabled,
+        control,
+    )?;
+    *portfolio = next;
+    notes.extend(recorded);
+    Ok(report)
+}
+
+/// The accounting stage precedes the market session. A later same-day setting
+/// must not retroactively change an allocation already observed at settlement.
+#[derive(Clone, Copy)]
+enum ManualReinvestmentControl<'a> {
+    Event(&'a crate::position_exposure::PositionExposureEvent),
+    LegacyZero(NaiveDate),
+}
+
+impl ManualReinvestmentControl<'_> {
+    fn suppression(self, symbol: &str) -> Option<String> {
+        use crate::position_exposure::PositionExposureAction as Action;
+        match self {
+            Self::LegacyZero(date) => Some(format!(
+                "runtime_zero_exposure legacy_effective_date={date}"
+            )),
+            Self::Event(event) => {
+                if matches!(event.action, Action::Restore) {
+                    return None;
+                }
+                let reason = if matches!(
+                    event.action,
+                    Action::Scale { requested_bps: 0 }
+                        | Action::Set {
+                            target_exposure_bps: 0
+                        }
+                ) {
+                    "runtime_zero_exposure"
+                } else if event
+                    .allocation_weights_bps
+                    .as_ref()
+                    .is_some_and(|weights| weights.get(symbol).copied().unwrap_or(0) == 0)
+                {
+                    "runtime_zero_allocation"
+                } else {
+                    return None;
+                };
+                Some(format!(
+                    "{reason} event_sequence={} effective_at={}",
+                    event.sequence, event.effective_at
+                ))
+            }
+        }
+    }
+}
+
+fn manual_reinvestment_control(
+    date: NaiveDate,
+    runtime_input: Option<&crate::manual_execution::ManualExecutionReplay>,
+) -> Result<Option<ManualReinvestmentControl<'_>>, BacktestError> {
+    let Some(input) = runtime_input else {
+        return Ok(None);
+    };
+    let at = chrono::FixedOffset::east_opt(8 * 3600)
+        .unwrap()
+        .from_local_datetime(&date.and_hms_opt(0, 0, 0).unwrap())
+        .single()
+        .ok_or_else(|| {
+            BacktestError::Execution(
+                "dividend_reinvestment: accounting stage clock is out of range".into(),
+            )
+        })?
+        .with_timezone(&chrono::Utc);
+    // The input has already been validated and bound to the runtime audit.
+    // Keep the same (time, sequence) precedence as PositionExposureTimeline.
+    if let Some(event) = input
+        .position_exposure_events
+        .iter()
+        .filter(|event| event.effective_at <= at)
+        .max_by_key(|event| (event.effective_at, event.sequence))
+    {
+        return Ok(Some(ManualReinvestmentControl::Event(event)));
+    }
+    Ok(input
+        .legacy_position_exposure_bps
+        .range(..=date)
+        .next_back()
+        .filter(|(_, bps)| **bps == 0)
+        .map(|(day, _)| ManualReinvestmentControl::LegacyZero(*day)))
+}
+
+fn settle_receivables_inner(
+    date: NaiveDate,
+    data: &DataSet,
+    portfolio: &mut PortfolioState,
+    notes: &mut Vec<String>,
+    reinvest_enabled: bool,
+    control: Option<ManualReinvestmentControl<'_>>,
+) -> Result<BrokerExecutionReport, BacktestError> {
+    let mut report = BrokerExecutionReport::default();
+    let due = portfolio.take_due_cash_receivables(date);
+    for receivable in due {
+        let cash_before = portfolio.cash();
+        portfolio
+            .settle_cash_receivable(&receivable)
+            .map_err(BacktestError::Execution)?;
+        let mut note = format!(
+            "cash_receivable_settled {} ex_date={} payable_date={} cash={:.2}",
+            receivable.symbol, receivable.ex_date, receivable.payable_date, receivable.amount
+        );
+        if let Some(suppression) =
+            control.and_then(|control| control.suppression(&receivable.symbol))
+            && receivable.reason.starts_with("cash_dividend")
+            && receivable.amount > 0.
+        {
+            note.push_str(&format!(
+                " dividend_reinvestment_not_applied reason={suppression} cash_retained=true"
+            ));
+        } else if reinvest_enabled
+            && receivable.reason.starts_with("cash_dividend")
+            && receivable.amount > 0.0
+        {
+            let instrument = data.instrument(&receivable.symbol).ok_or_else(|| BacktestError::Execution(format!(
+                "dividend_reinvestment: instrument metadata missing symbol={} payable_date={date}", receivable.symbol)))?;
+            if let Some(reason) = instrument.dated_market_absence_reason(date) {
+                note.push_str(&format!(
+                    " dividend_reinvestment_not_applied reason={reason} cash_retained=true"
+                ));
+            } else {
+                let (reinvest_price, reference_basis) = if let Some(position) = portfolio
+                    .position(&receivable.symbol)
+                    .filter(|position| position.quantity > 0)
+                {
+                    (Some(position.last_price), "adjusted_carried_mark")
+                } else {
+                    (
+                        data.calendar().previous_day(date).and_then(|prev_date| {
+                            data.price_on_or_before(
+                                prev_date,
+                                &receivable.symbol,
+                                PriceField::Close,
+                            )
+                        }),
+                        "previous_completed_close",
+                    )
+                };
+                let price = reinvest_price.filter(|price| price.is_finite() && *price > 0.).ok_or_else(|| BacktestError::Execution(format!(
+                "dividend_reinvestment: accounting reference missing or invalid symbol={} payable_date={date} basis={reference_basis}", receivable.symbol)))?;
+                let round_lot = instrument.round_lot;
+                if round_lot == 0 {
+                    return Err(BacktestError::Execution(format!(
+                        "dividend_reinvestment: invalid quantity unit symbol={}",
+                        receivable.symbol
+                    )));
+                }
+                {
+                    let raw = (receivable.amount / price).floor();
+                    if !raw.is_finite() || raw > i32::MAX as f64 {
+                        return Err(BacktestError::Execution("dividend_reinvestment: accounting allocation quantity exceeds the ledger contract".into()));
+                    }
+                    let raw_quantity = raw as u32;
+                    let reinvest_quantity = (raw_quantity / round_lot) * round_lot;
+                    if reinvest_quantity > 0 {
+                        // Report the same micro-unit amount actually posted to
+                        // the ledger, not a floating multiplication residue.
+                        let reinvest_money =
+                            crate::FixedMoney::from_f64(reinvest_quantity as f64 * price)
+                                .ok_or_else(|| {
+                                    BacktestError::Execution(
+                                        "dividend_reinvestment: allocation amount out of range"
+                                            .into(),
+                                    )
+                                })?;
+                        let cash_delta = reinvest_money.checked_neg().ok_or_else(|| {
+                            BacktestError::Execution(
+                                "dividend_reinvestment: cash amount out of range".into(),
+                            )
+                        })?;
+                        let residual_cash = crate::FixedMoney::from_f64(receivable.amount)
+                            .and_then(|cash| cash.checked_sub(reinvest_money))
+                            .ok_or_else(|| {
+                                BacktestError::Execution(
+                                    "dividend_reinvestment: residual amount out of range".into(),
+                                )
+                            })?
+                            .to_f64();
+                        let reinvest_cash = reinvest_money.to_f64();
+                        portfolio
+                            .apply_cash_delta_fixed(cash_delta)
+                            .map_err(BacktestError::Execution)?;
+                        portfolio.position_mut(&receivable.symbol).buy(
+                            date,
+                            reinvest_quantity,
+                            price,
+                        );
+
+                        note = format!(
+                            "cash_receivable_reinvested {} ex_date={} payable_date={} cash={:.2} reinvest_qty={} reinvest_price={:.4} residual_cash={:.2}",
+                            receivable.symbol,
+                            receivable.ex_date,
+                            receivable.payable_date,
+                            receivable.amount,
+                            reinvest_quantity,
+                            price,
+                            residual_cash
+                        );
+                        report.fill_events.push(FillEvent {
+                            origin: crate::events::FillOrigin::DividendReinvestment,
+                            date,
+                            decision_date: None,
+                            order_created_date: None,
+                            execution_date: None,
+                            execution_start_timestamp: date.and_hms_opt(0, 0, 0),
+                            execution_timestamp: date.and_hms_opt(0, 0, 0),
+                            order_id: None,
+                            symbol: receivable.symbol.clone(),
+                            side: OrderSide::Buy,
+                            quantity: reinvest_quantity,
+                            price,
+                            gross_amount: reinvest_cash,
+                            commission: 0.0,
+                            stamp_tax: 0.0,
+                            transfer_fee: 0.0,
+                            net_cash_flow: cash_delta.to_f64(),
+                            reason: "dividend_reinvestment".to_string(),
+                        });
+                        report.position_events.push(PositionEvent {
+                            date,
+                            symbol: receivable.symbol.clone(),
+                            delta_quantity: reinvest_quantity as i32,
+                            quantity_after: portfolio
+                                .position(&receivable.symbol)
+                                .map(|position| position.quantity)
+                                .unwrap_or(0),
+                            average_cost: portfolio
+                                .position(&receivable.symbol)
+                                .map(|position| position.average_cost)
+                                .unwrap_or(0.0),
+                            realized_pnl_delta: 0.0,
+                            reason: "dividend_reinvestment".to_string(),
+                        });
+                        report.process_events.push(ProcessEvent {
+                        date,
+                        kind: ProcessEventKind::Trade,
+                        order_id: None,
+                        symbol: Some(receivable.symbol.clone()),
+                        side: Some(OrderSide::Buy),
+                        detail: format!("dividend_reinvestment model=fee_free_accounting booked_at={} quantity={} price={} reference_basis={} ex_date={} payable_date={} residual_cash={}",
+                            date.and_hms_opt(0,0,0).unwrap(), reinvest_quantity, price, reference_basis,
+                            receivable.ex_date, receivable.payable_date, residual_cash),
+                    });
+                    }
+                }
+            }
+        }
+        notes.push(note.clone());
+        report.account_events.push(AccountEvent {
+            date,
+            cash_before,
+            cash_after: portfolio.cash(),
+            total_equity: portfolio.total_equity(),
+            note,
+        });
+    }
+    Ok(report)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    fn date() -> NaiveDate {
+        NaiveDate::from_ymd_opt(2026, 9, 14).unwrap()
+    }
+    fn data(delisted: bool) -> DataSet {
+        DataSet::from_components(
+            vec![crate::Instrument {
+                symbol: "000001.SZ".into(),
+                name: "fixture".into(),
+                board: "SZ".into(),
+                round_lot: 100,
+                listed_at: Some(NaiveDate::from_ymd_opt(2020, 1, 1).unwrap()),
+                delisted_at: delisted.then_some(date()),
+                status: "active".into(),
+            }],
+            vec![],
+            vec![],
+            vec![],
+            vec![crate::BenchmarkSnapshot {
+                date: date(),
+                benchmark: "000300.SH".into(),
+                open: 100.,
+                close: 100.,
+                prev_close: 100.,
+                volume: 0,
+            }],
+        )
+        .unwrap()
+    }
+    fn book() -> PortfolioState {
+        let mut book = PortfolioState::new(10.);
+        book.add_cash_receivable(CashReceivable {
+            symbol: "000001.SZ".into(),
+            ex_date: date().pred_opt().unwrap(),
+            payable_date: date(),
+            amount: 100.,
+            reason: "cash_dividend 1".into(),
+        });
+        book
+    }
+    #[test]
+    fn missing_accounting_reference_is_atomic_not_a_silent_cash_only_success() {
+        let mut book = book();
+        let before = book.financial_replay_identity();
+        let error =
+            settle_receivables(date(), &data(false), &mut book, &mut Vec::new(), true, None)
+                .unwrap_err();
+        assert!(error.to_string().contains("accounting reference missing"));
+        assert_eq!(book.financial_replay_identity(), before);
+    }
+    #[test]
+    fn terminated_security_keeps_paid_cash_and_is_not_recreated_by_reinvestment() {
+        let mut book = book();
+        let mut notes = Vec::new();
+        let report =
+            settle_receivables(date(), &data(true), &mut book, &mut notes, true, None).unwrap();
+        assert_eq!(book.cash(), 110.);
+        assert!(book.positions().is_empty());
+        assert!(book.cash_receivables().is_empty());
+        assert!(report.fill_events.is_empty());
+        assert!(notes[0].contains("dividend_reinvestment_not_applied"));
+    }
+
+    #[test]
+    fn manual_zero_skips_only_unused_allocation_facts_not_invalid_cash_evidence() {
+        let mut input = crate::manual_execution::ManualExecutionReplay {
+            schema: crate::manual_execution::MANUAL_REPLAY_SCHEMA.into(),
+            runtime_id: "runtime".into(),
+            account_id: "account".into(),
+            source_contract_sha256: "a".repeat(64),
+            content_sha256: String::new(),
+            observation_cutoff: "2026-09-14T08:00:00Z".parse().unwrap(),
+            actions: vec![],
+            position_exposure_events: vec![],
+            legacy_position_exposure_bps: std::collections::BTreeMap::from([(date(), 0)]),
+        };
+        input.content_sha256 = input.content_digest().unwrap();
+        input.validate().unwrap();
+        let mut account = book();
+        let mut notes = Vec::new();
+        // No historical price is present, but no optional purchase is wanted.
+        let report = settle_receivables(
+            date(),
+            &data(false),
+            &mut account,
+            &mut notes,
+            true,
+            Some(&input),
+        )
+        .unwrap();
+        assert_eq!(account.cash(), 110.);
+        assert!(account.positions().is_empty());
+        assert!(report.fill_events.is_empty());
+        assert!(notes[0].contains("runtime_zero_exposure"));
+        let mut account = book();
+        account.add_cash_receivable(CashReceivable {
+            symbol: "000001.SZ".into(),
+            ex_date: date(),
+            payable_date: date(),
+            amount: f64::NAN,
+            reason: "cash_dividend invalid fixture".into(),
+        });
+        let mut notes = vec!["prior".into()];
+        assert!(
+            settle_receivables(
+                date(),
+                &data(false),
+                &mut account,
+                &mut notes,
+                true,
+                Some(&input)
+            )
+            .is_err()
+        );
+        assert_eq!(account.cash(), 10.);
+        assert_eq!(account.cash_receivables().len(), 2);
+        assert!(account.cash_receivables()[1].amount.is_nan());
+        assert_eq!(notes, ["prior"]);
+    }
+
+    fn conversion() -> crate::CorporateAction {
+        crate::CorporateAction {
+            date: date(),
+            symbol: "000001.SZ".into(),
+            payable_date: None,
+            share_cash: 0.,
+            share_bonus: 0.,
+            share_gift: 0.,
+            issue_quantity: 0.,
+            issue_price: 0.,
+            reform: false,
+            adjust_factor: None,
+            successor_symbol: Some("000002.SZ".into()),
+            successor_ratio: Some(1.5),
+            successor_cash: Some(0.5),
+        }
+    }
+
+    fn conversion_data(actions: Vec<crate::CorporateAction>, include_successor: bool) -> DataSet {
+        let mut instruments = data(false)
+            .instruments()
+            .values()
+            .cloned()
+            .collect::<Vec<_>>();
+        if include_successor {
+            let mut successor = instruments[0].clone();
+            successor.symbol = "000002.SZ".into();
+            instruments.push(successor);
+        }
+        DataSet::from_components_with_actions(
+            instruments,
+            vec![],
+            vec![],
+            vec![],
+            vec![crate::BenchmarkSnapshot {
+                date: date(),
+                benchmark: "000300.SH".into(),
+                open: 100.,
+                close: 100.,
+                prev_close: 100.,
+                volume: 0,
+            }],
+            actions,
+        )
+        .unwrap()
+    }
+
+    fn conversion_book() -> PortfolioState {
+        let mut book = PortfolioState::new(1000.);
+        book.position_mut("000001.SZ")
+            .buy(date().pred_opt().unwrap(), 100, 10.);
+        book
+    }
+
+    #[test]
+    fn successor_without_frozen_instrument_metadata_is_not_an_implicit_new_security() {
+        let mut action = conversion();
+        action.share_cash = 1.;
+        action.share_bonus = 1.;
+        let data = conversion_data(vec![action], false);
+        let mut book = conversion_book();
+        let before = book.financial_replay_identity();
+        let mut notes = vec!["prior".into()];
+        let error = apply(date(), &data, &mut book, &mut notes, true, true).unwrap_err();
+        assert!(error.to_string().contains("successor_instrument_missing"));
+        assert_eq!(book.financial_replay_identity(), before);
+        assert_eq!(notes, ["prior"]);
+    }
+
+    #[test]
+    fn invalid_successor_terms_cannot_be_replaced_with_one_share_or_zero_cash() {
+        let base = conversion();
+        let mut cases = Vec::new();
+        for ratio in [
+            None,
+            Some(0.),
+            Some(-1.),
+            Some(f64::NAN),
+            Some(f64::INFINITY),
+        ] {
+            let mut row = base.clone();
+            row.successor_ratio = ratio;
+            cases.push(row);
+        }
+        for symbol in [
+            None,
+            Some(""),
+            Some("  "),
+            Some("000001.SZ"),
+            Some(" 000002.SZ"),
+        ] {
+            let mut row = base.clone();
+            row.successor_symbol = symbol.map(str::to_owned);
+            cases.push(row);
+        }
+        for cash in [f64::NAN, f64::INFINITY, f64::NEG_INFINITY] {
+            let mut row = base.clone();
+            row.successor_cash = Some(cash);
+            cases.push(row);
+        }
+        for action in cases {
+            let mut book = conversion_book();
+            let before = book.financial_replay_identity();
+            let data = conversion_data(vec![action.clone()], true);
+            let mut notes = Vec::new();
+            assert!(
+                apply(date(), &data, &mut book, &mut notes, true, true).is_err(),
+                "accepted {action:?}"
+            );
+            assert_eq!(book.financial_replay_identity(), before);
+            assert!(notes.is_empty());
+        }
+    }
+
+    #[test]
+    fn a_late_corporate_batch_failure_keeps_prior_cash_positions_and_notes() {
+        let mut dividend = conversion();
+        dividend.successor_symbol = None;
+        dividend.successor_ratio = None;
+        dividend.successor_cash = None;
+        dividend.share_cash = 1.;
+        dividend.share_bonus = 1.;
+        let mut failure = conversion();
+        failure.successor_cash = Some(1e100);
+        let data = conversion_data(vec![dividend, failure], true);
+        let mut book = conversion_book();
+        let mut state = crate::stock_pool_state::StockPoolExecutionState {
+            last_execution_date: date().pred_opt(),
+            ..Default::default()
+        };
+        state.position_action_bases.insert(
+            "000001.SZ".into(),
+            crate::stock_pool_state::StockPoolPositionActionBasis {
+                generation: "original".into(),
+                first_execution_date: date().pred_opt().unwrap(),
+                quantity: rust_decimal::Decimal::from(100),
+            },
+        );
+        state.last_target_weights.insert("000001.SZ".into(), 10000);
+        book.set_stock_pool_execution_state("pool", state.clone())
+            .unwrap();
+        let before = book.financial_replay_identity();
+        let mut notes = vec!["prior".into()];
+        assert!(apply(date(), &data, &mut book, &mut notes, true, true).is_err());
+        assert_eq!(book.financial_replay_identity(), before);
+        assert_eq!(book.stock_pool_execution_state("pool"), state);
+        assert_eq!(notes, ["prior"]);
+    }
+
+    #[test]
+    fn corporate_quantity_overflow_fails_without_saturation_or_a_negative_delta() {
+        for split in [false, true] {
+            let mut action = conversion();
+            if split {
+                action.share_bonus = 1e100;
+            } else {
+                action.successor_ratio = Some(1e100);
+            }
+            let data = conversion_data(vec![action], true);
+            let mut book = conversion_book();
+            let before = book.financial_replay_identity();
+            let mut notes = Vec::new();
+            let error = apply(date(), &data, &mut book, &mut notes, true, true).unwrap_err();
+            assert!(
+                error
+                    .to_string()
+                    .contains("corporate_action_quantity_overflow")
+            );
+            assert_eq!(book.financial_replay_identity(), before);
+            assert!(notes.is_empty());
+        }
+    }
+
+    #[test]
+    fn verified_conversion_preserves_lots_without_creating_orders_or_fills() {
+        let data = conversion_data(vec![conversion()], true);
+        let mut book = conversion_book();
+        book.position_mut("000002.SZ").buy(date(), 50, 20.);
+        let mut notes = Vec::new();
+        let report = apply(date(), &data, &mut book, &mut notes, true, true).unwrap();
+        assert!(book.position("000001.SZ").is_none());
+        let successor = book.position("000002.SZ").unwrap();
+        assert_eq!(successor.quantity, 200);
+        assert_eq!(successor.opened_date(), date().pred_opt());
+        assert_eq!(successor.last_buy_date(), Some(date()));
+        assert_eq!(book.cash(), 1050.);
+        assert!(report.fill_events.is_empty());
+        assert!(report.order_events.is_empty());
+        assert_eq!(report.position_events.len(), 2);
+        assert!(notes[0].contains("ratio=1.500000"));
+    }
+}

crates/fidc-core/src/cost.rs

@@ -5,6 +5,7 @@ use chrono::NaiveDate;
 use crate::events::OrderSide;
 use crate::fixed_point::{FixedChinaAShareCostModel, FixedMoney, FixedTradingCost};
 use crate::risk_control::TradingConstraintConfig;
+use crate::Instrument;
 
 #[derive(Debug, Clone, Copy)]
 pub struct TradingCost {
@@ -35,6 +36,17 @@ impl TradingCost {
 pub trait CostModel {
     fn calculate(&self, date: NaiveDate, side: OrderSide, gross_amount: f64) -> TradingCost;
 
+    fn calculate_for_instrument(&self, date: NaiveDate, side: OrderSide, gross_amount: f64, _instrument: Option<&Instrument>) -> TradingCost {
+        self.calculate(date, side, gross_amount)
+    }
+
+    fn calculate_with_order_state_for_instrument(
+        &self, date: NaiveDate, side: OrderSide, gross_amount: f64,
+        order_id: Option<u64>, commission_state: &mut BTreeMap<u64,f64>, _instrument: Option<&Instrument>,
+    ) -> TradingCost {
+        self.calculate_with_order_state(date, side, gross_amount, order_id, commission_state)
+    }
+
     fn calculate_with_order_state(
         &self,
         date: NaiveDate,
@@ -215,6 +227,27 @@ impl ChinaAShareCostModel {
 }
 
 impl CostModel for ChinaAShareCostModel {
+    fn calculate_for_instrument(&self, date: NaiveDate, side: OrderSide, gross_amount: f64, instrument: Option<&Instrument>) -> TradingCost {
+        let mut cost = self.calculate(date, side, gross_amount);
+        if instrument.is_some_and(Instrument::is_exchange_traded_fund) {
+            cost.stamp_tax = 0.0;
+            cost.transfer_fee = 0.0;
+        }
+        cost
+    }
+
+    fn calculate_with_order_state_for_instrument(
+        &self, date: NaiveDate, side: OrderSide, gross_amount: f64,
+        order_id: Option<u64>, commission_state: &mut BTreeMap<u64,f64>, instrument: Option<&Instrument>,
+    ) -> TradingCost {
+        let mut cost = self.calculate_with_order_state(date, side, gross_amount, order_id, commission_state);
+        if instrument.is_some_and(Instrument::is_exchange_traded_fund) {
+            cost.stamp_tax = 0.0;
+            cost.transfer_fee = 0.0;
+        }
+        cost
+    }
+
     fn calculate(&self, date: NaiveDate, side: OrderSide, gross_amount: f64) -> TradingCost {
         if gross_amount <= 0.0 {
             return TradingCost {
@@ -273,6 +306,25 @@ impl CostModel for ChinaAShareCostModel {
 mod tests {
     use super::*;
 
+    #[test]
+    fn fund_fees_use_admitted_instrument_type_and_share_the_order_commission_budget() {
+        let day=NaiveDate::from_ymd_opt(2026,9,11).unwrap();
+        let model=ChinaAShareCostModel::from_trading_constraints(TradingConstraintConfig{commission_rate:0.0003,minimum_commission:5.,transfer_fee_rate:0.00001,..Default::default()});
+        let mut instrument=Instrument{symbol:"510300.SH".into(),name:"fixture".into(),board:"ETF".into(),round_lot:100,listed_at:Some(day),delisted_at:None,status:"active".into()};
+        for side in [OrderSide::Buy,OrderSide::Sell] {
+            let cost=model.calculate_for_instrument(day,side,10_000.,Some(&instrument));
+            assert_eq!(cost.commission,5.);assert_eq!(cost.stamp_tax,0.);assert_eq!(cost.transfer_fee,0.);
+            let mut state=BTreeMap::new();
+            let one=model.calculate_with_order_state_for_instrument(day,side,1_000.,Some(1),&mut state,Some(&instrument));
+            let two=model.calculate_with_order_state_for_instrument(day,side,9_000.,Some(1),&mut state,Some(&instrument));
+            assert_eq!(one.total()+two.total(),cost.total());
+        }
+        instrument.board="SH".into();
+        let stock=model.calculate_for_instrument(day,OrderSide::Sell,10_000.,Some(&instrument));
+        assert_eq!(stock.stamp_tax,5.);assert_eq!(stock.transfer_fee,0.1);
+        assert_eq!(stock.total(),model.calculate(day,OrderSide::Sell,10_000.).total());
+    }
+
     #[test]
     fn default_quantizes_fees_to_micro_yuan() {
         let model = ChinaAShareCostModel::default();

crates/fidc-core/src/etf_execution.rs

@@ -0,0 +1,128 @@
+//! Historical ETF execution fallback. Never manufactures an intraday bar.
+use chrono::{NaiveDate, NaiveDateTime, NaiveTime};
+use rust_decimal::Decimal;
+use crate::{BacktestError, DataSet};
+
+pub(crate) fn opening_time() -> NaiveTime {
+    NaiveTime::from_hms_opt(9, 30, 0).expect("valid exchange opening time")
+}
+
+#[derive(Debug, Clone)]
+pub(crate) struct EtfFallbackReference {
+    pub price: f64,
+    pub reference_date: NaiveDate,
+    /// None means the next official session is outside the loaded calendar.
+    /// No natural-day guess or price from beyond the requested run is used.
+    pub execute_on: Option<NaiveDate>,
+    pub immediate: bool,
+}
+
+pub(crate) fn reference(data: &DataSet, symbol: &str, at: NaiveDateTime) -> Result<EtfFallbackReference, BacktestError> {
+    let fail = |reason: &str| BacktestError::Execution(format!(
+        "etf_daily_open_fallback:{reason} symbol={symbol} signal_at={at}"
+    ));
+    let instrument = data.instrument(symbol).ok_or_else(|| fail("instrument_identity_missing"))?;
+    if !instrument.is_exchange_traded_fund() || instrument.listed_at.is_none() {
+        return Err(fail("verified_etf_identity_required"));
+    }
+    if instrument.dated_market_absence_reason(at.date()).is_some() {
+        return Err(fail("outside_instrument_lifecycle"));
+    }
+    if at.time() == opening_time() {
+        let row = data.market(at.date(), symbol).ok_or_else(|| fail("daily_open_missing"))?;
+        if !row.open.is_finite() || row.open <= 0.0 { return Err(fail("daily_open_invalid")); }
+        return Ok(EtfFallbackReference { price: row.open, reference_date: at.date(), execute_on: Some(at.date()), immediate: true });
+    }
+    let previous = data.previous_trading_date(at.date(), 1).ok_or_else(|| fail("previous_official_session_missing"))?;
+    let close = data.market(previous, symbol).map(|row| row.close).ok_or_else(|| fail("previous_completed_close_missing"))?;
+    if !close.is_finite() || close <= 0.0 { return Err(fail("previous_completed_close_invalid")); }
+    Ok(EtfFallbackReference {
+        price: close, reference_date: previous, immediate: false,
+        execute_on: if at.time() < opening_time() { Some(at.date()) } else { data.next_trading_date(at.date(), 1) },
+    })
+}
+
+#[derive(Debug, Clone)]
+pub(crate) struct DeferredEtfTarget {
+    pub pool_id: String,
+    pub generation: String,
+    pub symbol: String,
+    pub signal_date: NaiveDate,
+    pub signal_at: NaiveDateTime,
+    pub execute_on: Option<NaiveDate>,
+    pub target_value: Decimal,
+    pub target_weight_bps: i32,
+    pub side: crate::stock_pool_execution::OrderSide,
+    pub max_positions: usize,
+    pub rule: std::sync::Arc<crate::stock_pool_execution::StockPoolExecutionRule>,
+    pub members: std::sync::Arc<Vec<crate::stock_pool_execution::StockPoolMemberSpec>>,
+    pub reason: String,
+}
+
+/// Owned by one broker/run. Replacing a full pool generation supersedes older
+/// queued targets; order of the latest candidate list is retained.
+#[derive(Debug, Default, Clone)]
+pub(crate) struct DeferredEtfTargets {
+    generations: std::collections::BTreeMap<String, String>,
+    rows: Vec<DeferredEtfTarget>,
+}
+
+impl DeferredEtfTargets {
+    pub fn replace_generation(&mut self, pool_id: &str, generation: &str) -> usize {
+        if self.generations.get(pool_id).is_some_and(|old| old == generation) { return 0; }
+        self.generations.insert(pool_id.into(), generation.into());
+        let before = self.rows.len();
+        self.rows.retain(|row| row.pool_id != pool_id);
+        before - self.rows.len()
+    }
+    pub fn upsert(&mut self, row: DeferredEtfTarget) {
+        if let Some(existing) = self.rows.iter_mut().find(|v| v.pool_id == row.pool_id && v.symbol == row.symbol) {
+            *existing = row;
+        } else { self.rows.push(row); }
+    }
+    pub fn take_due(&mut self, date: NaiveDate) -> Vec<DeferredEtfTarget> {
+        let mut due = Vec::new();
+        self.rows.retain(|row| {
+            if row.execute_on.is_some_and(|day| day <= date) { due.push(row.clone()); false } else { true }
+        });
+        due.sort_by_key(|row| match row.side { crate::stock_pool_execution::OrderSide::Sell => 0, crate::stock_pool_execution::OrderSide::Buy => 1 });
+        due
+    }
+    pub fn len(&self) -> usize { self.rows.len() }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    fn target(symbol:&str,side:crate::stock_pool_execution::OrderSide,generation:&str)->DeferredEtfTarget {
+        let date=NaiveDate::from_ymd_opt(2026,1,2).unwrap();
+        DeferredEtfTarget {pool_id:"pool".into(),generation:generation.into(),symbol:symbol.into(),signal_date:date,signal_at:date.and_hms_opt(13,0,0).unwrap(),execute_on:NaiveDate::from_ymd_opt(2026,1,5),target_value:1000.into(),target_weight_bps:5000,side,max_positions:2,rule:Default::default(),members:std::sync::Arc::new(vec![]),reason:"fixture".into()}
+    }
+    #[test]
+    fn latest_generation_overwrites_pending_targets_and_preserves_candidate_order() {
+        use crate::stock_pool_execution::OrderSide::{Buy,Sell};
+        let mut queue=DeferredEtfTargets::default();
+        queue.replace_generation("pool","v1");
+        queue.upsert(target("510300.SH",Buy,"v1"));
+        queue.upsert(target("159915.SZ",Buy,"v1"));
+        assert_eq!(queue.replace_generation("pool","v1"),0);
+        assert_eq!(queue.replace_generation("pool","v2"),2);
+        queue.upsert(target("560450.SH",Buy,"v2"));
+        queue.upsert(target("159915.SZ",Sell,"v2"));
+        queue.upsert(target("510300.SH",Buy,"v2"));
+        assert!(queue.take_due(NaiveDate::from_ymd_opt(2026,1,2).unwrap()).is_empty());
+        let due=queue.take_due(NaiveDate::from_ymd_opt(2026,1,5).unwrap());
+        assert_eq!(due.iter().map(|v|v.symbol.as_str()).collect::<Vec<_>>(),vec!["159915.SZ","560450.SH","510300.SH"]);
+        assert!(due.iter().all(|v|v.generation=="v2"));
+        assert_eq!(queue.len(),0);
+    }
+    #[test]
+    fn no_loaded_next_session_is_not_guessed_from_natural_days() {
+        let mut queue=DeferredEtfTargets::default();
+        let mut item=target("510300.SH",crate::stock_pool_execution::OrderSide::Buy,"v1");
+        item.execute_on=None;
+        queue.upsert(item);
+        assert!(queue.take_due(NaiveDate::from_ymd_opt(2026,2,1).unwrap()).is_empty());
+        assert_eq!(queue.len(),1);
+    }
+}

crates/fidc-core/src/events.rs

@@ -181,8 +181,22 @@ impl OrderEvent {
     }
 }
 
+#[derive(Debug, Clone, Copy, Default, Serialize, Deserialize, PartialEq, Eq)]
+#[serde(rename_all = "snake_case")]
+pub enum FillOrigin {
+    #[default]
+    MarketExecution,
+    DividendReinvestment,
+}
+
+impl FillOrigin {
+    pub fn is_market_execution(&self) -> bool { *self == Self::MarketExecution }
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct FillEvent {
+    #[serde(default, skip_serializing_if = "FillOrigin::is_market_execution")]
+    pub origin: FillOrigin,
     #[serde(with = "date_format")]
     pub date: NaiveDate,
     #[serde(default, with = "optional_date_format")]
@@ -219,6 +233,14 @@ pub struct FillEvent {
 
 impl FillEvent {
     pub fn validate(&self) -> Result<(), String> {
+        if self.origin == FillOrigin::DividendReinvestment && (
+            self.order_id.is_some() || self.side != OrderSide::Buy
+            || self.commission != 0. || self.stamp_tax != 0. || self.transfer_fee != 0.
+            || self.execution_timestamp != self.date.and_hms_opt(0, 0, 0)
+            || self.execution_start_timestamp != self.execution_timestamp
+        ) {
+            return Err("dividend accounting allocation cannot carry an exchange order, fees, or a market clock".into());
+        }
         if self.symbol.trim().is_empty()
             || self.quantity == 0
             || !self.price.is_finite()
@@ -311,12 +333,15 @@ pub enum ProcessEventKind {
     OrderUpdateReject,
     OrderUnsolicitedUpdate,
     Trade,
+    ManualExecutionObserved,
     UniverseUpdated,
     UniverseSubscribed,
     UniverseUnsubscribed,
     AccountDepositWithdraw,
     AccountFinanceRepay,
     AccountManagementFee,
+    SessionCapacityAudit,
+    EtfExecutionFallback,
 }
 
 impl ProcessEventKind {
@@ -356,12 +381,15 @@ impl ProcessEventKind {
             Self::OrderUpdateReject => "order_update_reject",
             Self::OrderUnsolicitedUpdate => "order_unsolicited_update",
             Self::Trade => "trade",
+            Self::ManualExecutionObserved => "manual_execution_observed",
             Self::UniverseUpdated => "universe_updated",
             Self::UniverseSubscribed => "universe_subscribed",
             Self::UniverseUnsubscribed => "universe_unsubscribed",
             Self::AccountDepositWithdraw => "account_deposit_withdraw",
             Self::AccountFinanceRepay => "account_finance_repay",
             Self::AccountManagementFee => "account_management_fee",
+            Self::SessionCapacityAudit => "session_capacity_audit",
+            Self::EtfExecutionFallback => "etf_execution_fallback",
         }
     }
 
@@ -387,12 +415,15 @@ impl ProcessEventKind {
                 | Self::OrderUpdateReject
                 | Self::OrderUnsolicitedUpdate
                 | Self::Trade
+                | Self::ManualExecutionObserved
                 | Self::UniverseUpdated
                 | Self::UniverseSubscribed
                 | Self::UniverseUnsubscribed
                 | Self::AccountDepositWithdraw
                 | Self::AccountFinanceRepay
                 | Self::AccountManagementFee
+                | Self::SessionCapacityAudit
+                | Self::EtfExecutionFallback
                 | Self::Settlement
         )
     }
@@ -416,7 +447,7 @@ pub struct ProcessEvent {
 mod tests {
     use chrono::{NaiveDate, NaiveDateTime};
 
-    use super::{FillEvent, OrderEvent, OrderSide, OrderStatus, ProcessEventKind};
+    use super::{FillEvent, FillOrigin, OrderEvent, OrderSide, OrderStatus, ProcessEventKind};
 
     fn order_event(status: OrderStatus, filled_quantity: u32) -> OrderEvent {
         OrderEvent {
@@ -460,6 +491,7 @@ mod tests {
 
     fn fill_event(start: Option<NaiveDateTime>, end: Option<NaiveDateTime>) -> FillEvent {
         FillEvent {
+            origin: crate::events::FillOrigin::MarketExecution,
             date: NaiveDate::from_ymd_opt(2025, 1, 2).unwrap(),
             decision_date: None,
             order_created_date: None,
@@ -480,6 +512,27 @@ mod tests {
         }
     }
 
+    #[test]
+    fn accounting_origin_cannot_disguise_an_exchange_order_or_fee() {
+        let at = NaiveDate::from_ymd_opt(2025, 1, 2).unwrap().and_hms_opt(0, 0, 0).unwrap();
+        let mut fill = fill_event(Some(at), Some(at));
+        fill.origin = FillOrigin::DividendReinvestment;
+        fill.order_id = None;
+        fill.commission = 0.;
+        fill.net_cash_flow = -1000.;
+        assert!(fill.validate().is_ok());
+        for kind in 0..3 {
+            let mut invalid = fill.clone();
+            match kind {
+                0 => invalid.order_id = Some(1),
+                1 => invalid.commission = 1.,
+                _ => { invalid.execution_timestamp = Some(at + chrono::Duration::hours(9)); invalid.execution_start_timestamp = invalid.execution_timestamp; }
+            }
+            assert!(invalid.validate().is_err());
+        }
+        assert!(serde_json::to_value(fill_event(None, None)).unwrap().get("origin").is_none());
+    }
+
     #[test]
     fn fill_execution_timestamp_range_is_explicit_and_backward_compatible() {
         let start = NaiveDate::from_ymd_opt(2025, 1, 2)

crates/fidc-core/src/execution_capacity.rs

@@ -0,0 +1,205 @@
+//! Causal volume budgets. Session totals may audit fills, never size earlier orders.
+use chrono::{NaiveDate, NaiveDateTime};
+use serde::{Deserialize, Serialize};
+use thiserror::Error;
+
+#[derive(Debug, Clone, Copy, Default, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum VolumeCapacityMode {
+    #[default]
+    ExecutionObservation,
+    CompletedBar,
+    SessionCapacityAudit,
+}
+
+impl VolumeCapacityMode {
+    pub fn validate(self, enabled: bool, has_execution_observations: bool) -> Result<(), CapacityError> {
+        if !enabled { return Ok(()); }
+        match self {
+            Self::ExecutionObservation if !has_execution_observations => Err(CapacityError::MissingObservation),
+            Self::CompletedBar => Err(CapacityError::MissingCompletedBar),
+            _ => Ok(()),
+        }
+    }
+
+    pub fn limits_execution_quantity(self) -> bool { self != Self::SessionCapacityAudit }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Error)]
+pub enum CapacityError {
+    #[error("execution capacity ratio must be finite and in (0, 1]")]
+    InvalidRatio,
+    #[error("execution capacity decimal cannot be represented exactly")]
+    InvalidDecimal,
+    #[error("execution capacity observation has invalid time bounds")]
+    InvalidWindow,
+    #[error("execution capacity is not visible: available={available_at}, execution={execution_at}")]
+    NotVisible { available_at: NaiveDateTime, execution_at: NaiveDateTime },
+    #[error("execution capacity observation belongs to another session")]
+    WrongSession,
+    #[error("execution-time capacity is missing; daily session volume cannot size an earlier fill")]
+    MissingObservation,
+    #[error("completed_bar capacity requires declared bar end and availability; an undated daily total is not a completed observation")]
+    MissingCompletedBar,
+}
+
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct CapacityAuditSummary {
+    pub mode: VolumeCapacityMode,
+    pub enabled: bool,
+    pub participation_rate: f64,
+    pub audited_symbol_sessions: usize,
+    pub failed_symbol_sessions: usize,
+    pub audit_passed: Option<bool>,
+    pub execution_time_capacity_proven: bool,
+}
+
+impl CapacityAuditSummary {
+    pub fn observe(&mut self, audit: &SessionCapacityAudit) {
+        self.audited_symbol_sessions += 1;
+        self.failed_symbol_sessions += usize::from(!audit.passed);
+        self.audit_passed = Some(self.failed_symbol_sessions == 0);
+    }
+}
+
+/// Decimal semantics of the frozen JSON rate, evaluated without a float product.
+#[derive(Debug, Clone, Copy)]
+pub struct ParticipationRate {
+    numerator: u128,
+    denominator: u128,
+}
+
+impl ParticipationRate {
+    pub fn new(rate: f64) -> Result<Self, CapacityError> {
+        if !rate.is_finite() || rate <= 0.0 || rate > 1.0 {
+            return Err(CapacityError::InvalidRatio);
+        }
+        if rate < 1e-20 {
+            // Even u64::MAX shares at this rate cannot admit a single share.
+            return Ok(Self { numerator: 0, denominator: 1 });
+        }
+        if rate == 1.0 {
+            return Ok(Self { numerator: 1, denominator: 1 });
+        }
+        let text = rate.to_string();
+        let digits = text.strip_prefix("0.").ok_or(CapacityError::InvalidDecimal)?;
+        let digits = digits.trim_end_matches('0');
+        let numerator = digits.parse::<u128>().map_err(|_| CapacityError::InvalidDecimal)?;
+        let denominator = 10_u128.checked_pow(digits.len() as u32).ok_or(CapacityError::InvalidDecimal)?;
+        if numerator > u128::MAX / u128::from(u64::MAX) {
+            return Err(CapacityError::InvalidDecimal);
+        }
+        Ok(Self { numerator, denominator })
+    }
+
+    pub fn total_shares(self, market_shares: u64) -> u64 {
+        let total = u128::from(market_shares) * self.numerator / self.denominator;
+        u64::try_from(total).expect("participation rate cannot exceed the market shares")
+    }
+
+    pub fn remaining(self, market_shares: u64, consumed_shares: u64, requested: u32) -> u32 {
+        self.total_shares(market_shares).saturating_sub(consumed_shares).min(u64::from(requested)) as u32
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum VolumeObservationKind {
+    TradeIncrement,
+    CompletedBar,
+    CumulativeSession,
+}
+
+#[derive(Debug, Clone, Copy, Serialize, Deserialize)]
+pub struct VolumeObservation {
+    pub kind: VolumeObservationKind,
+    pub start: NaiveDateTime,
+    pub end: NaiveDateTime,
+    pub available_at: NaiveDateTime,
+    pub shares: u64,
+}
+
+impl VolumeObservation {
+    pub fn visible_shares(self, execution_at: NaiveDateTime) -> Result<u64, CapacityError> {
+        if self.start > self.end || self.available_at < self.end {
+            return Err(CapacityError::InvalidWindow);
+        }
+        if self.available_at > execution_at {
+            return Err(CapacityError::NotVisible { available_at: self.available_at, execution_at });
+        }
+        if self.start.date() != self.end.date() || self.end.date() != execution_at.date() {
+            return Err(CapacityError::WrongSession);
+        }
+        Ok(self.shares)
+    }
+
+    pub fn remaining(self, execution_at: NaiveDateTime, rate: ParticipationRate, consumed: u64, requested: u32) -> Result<u32, CapacityError> {
+        Ok(rate.remaining(self.visible_shares(execution_at)?, consumed, requested))
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+pub struct SessionCapacityAudit {
+    pub date: NaiveDate,
+    pub symbol: String,
+    pub filled_shares: u64,
+    pub session_shares: u64,
+    pub allowed_shares: u64,
+    pub passed: bool,
+}
+
+impl SessionCapacityAudit {
+    pub fn new(date: NaiveDate, symbol: String, filled_shares: u64, session_shares: u64, rate: ParticipationRate) -> Self {
+        let allowed_shares = rate.total_shares(session_shares);
+        Self { date, symbol, filled_shares, session_shares, allowed_shares, passed: filled_shares <= allowed_shares }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn decimal_participation_never_rounds_a_fractional_share_up_or_overflows() {
+        assert_eq!(ParticipationRate::new(0.58).unwrap().total_shares(50), 29);
+        assert_eq!(ParticipationRate::new(0.25).unwrap().total_shares(3), 0);
+        assert_eq!(ParticipationRate::new(0.5).unwrap().total_shares(3), 1);
+        assert_eq!(ParticipationRate::new(1.).unwrap().total_shares(u64::MAX), u64::MAX);
+        assert_eq!(ParticipationRate::new(0.25).unwrap().remaining(u64::MAX, 0, u32::MAX), u32::MAX);
+        assert_eq!(ParticipationRate::new(f64::MIN_POSITIVE).unwrap().total_shares(u64::MAX), 0);
+        for rate in [0., -1., f64::NAN, f64::INFINITY, 1.001] {
+            assert!(ParticipationRate::new(rate).is_err());
+        }
+    }
+
+    #[test]
+    fn completed_volume_cannot_be_used_for_an_earlier_open() {
+        let day = NaiveDate::from_ymd_opt(2025,1,2).unwrap();
+        let opening = day.and_hms_opt(9,30,0).unwrap();
+        let closing = day.and_hms_opt(15,0,0).unwrap();
+        let observation = VolumeObservation { kind:VolumeObservationKind::CompletedBar, start:opening, end:closing, available_at:closing, shares:10000 };
+        assert!(matches!(observation.visible_shares(opening), Err(CapacityError::NotVisible { .. })));
+        assert_eq!(observation.remaining(closing, ParticipationRate::new(0.25).unwrap(), 1000, 5000).unwrap(), 1500);
+        assert!(matches!(observation.visible_shares(closing+chrono::Duration::days(1)), Err(CapacityError::WrongSession)));
+    }
+
+    #[test]
+    fn delayed_publication_and_invalid_bounds_are_not_treated_as_zero_volume() {
+        let at = NaiveDate::from_ymd_opt(2025,1,2).unwrap().and_hms_opt(10,18,0).unwrap();
+        let observation = VolumeObservation { kind:VolumeObservationKind::TradeIncrement, start:at, end:at, available_at:at+chrono::Duration::seconds(1), shares:0 };
+        assert!(matches!(observation.visible_shares(at), Err(CapacityError::NotVisible { .. })));
+        assert_eq!(VolumeObservation { available_at:at-chrono::Duration::seconds(1), ..observation }.visible_shares(at), Err(CapacityError::InvalidWindow));
+        assert_eq!(VolumeObservation { available_at:at, ..observation }.visible_shares(at).unwrap(), 0);
+    }
+
+    #[test]
+    fn session_audit_changes_verdict_not_executed_quantity() {
+        let day = NaiveDate::from_ymd_opt(2025,1,2).unwrap();
+        let rate = ParticipationRate::new(0.25).unwrap();
+        let a = SessionCapacityAudit::new(day,"TEST".into(),1000,3000,rate);
+        let b = SessionCapacityAudit::new(day,"TEST".into(),1000,5000,rate);
+        assert!(!a.passed); assert!(b.passed);
+        assert_eq!(a.filled_shares,b.filled_shares);
+    }
+}

crates/fidc-core/src/execution_schedule.rs

@@ -0,0 +1,61 @@
+use chrono::NaiveDateTime;
+
+use crate::engine::BacktestError;
+
+/// Cumulative TWAP entitlement depends on the frozen clock, not future quotes.
+pub(crate) struct TwapSchedule {
+    start: NaiveDateTime,
+    end: NaiveDateTime,
+    quantity: u32,
+}
+
+impl TwapSchedule {
+    pub(crate) fn new(
+        start: Option<NaiveDateTime>,
+        end: Option<NaiveDateTime>,
+        quantity: u32,
+    ) -> Result<Self, BacktestError> {
+        let (Some(start), Some(end)) = (start, end) else {
+            return Err(BacktestError::Execution("TWAP requires an explicit start and end clock".into()));
+        };
+        if end < start || start.date() != end.date() {
+            return Err(BacktestError::Execution("TWAP requires an ordered same-session clock window".into()));
+        }
+        Ok(Self { start, end, quantity })
+    }
+
+    pub(crate) fn due_quantity(&self, at: NaiveDateTime, filled: u32) -> u32 {
+        if at < self.start {
+            return 0;
+        }
+        let entitlement = if at >= self.end {
+            self.quantity
+        } else {
+            let elapsed = (at - self.start).num_microseconds().expect("same-day interval") as u128;
+            let duration = (self.end - self.start).num_microseconds().expect("same-day interval") as u128;
+            (u128::from(self.quantity) * elapsed / duration) as u32
+        };
+        entitlement.saturating_sub(filled)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use chrono::{Duration, NaiveDate};
+
+    #[test]
+    fn clock_entitlements_are_exact_and_allow_backlog_without_future_quote_counts() {
+        let start = NaiveDate::from_ymd_opt(2025, 1, 2).unwrap().and_hms_opt(10, 0, 0).unwrap();
+        let end = start + Duration::minutes(10);
+        let schedule = TwapSchedule::new(Some(start), Some(end), 1_000).unwrap();
+        assert_eq!(schedule.due_quantity(start, 0), 0);
+        assert_eq!(schedule.due_quantity(start + Duration::minutes(2), 0), 200);
+        assert_eq!(schedule.due_quantity(start + Duration::minutes(5), 100), 400);
+        assert_eq!(schedule.due_quantity(end, 100), 900);
+        assert_eq!(schedule.due_quantity(end, 1_000), 0);
+        assert!(TwapSchedule::new(Some(start), None, 1_000).is_err());
+        assert!(TwapSchedule::new(Some(end), Some(start), 1_000).is_err());
+        assert_eq!(TwapSchedule::new(Some(start), Some(start), 1_000).unwrap().due_quantity(start, 0), 1_000);
+    }
+}

crates/fidc-core/src/factor_cross_section.rs

@@ -0,0 +1,234 @@
+//! Cross-sectional operators require an explicit complete universe, never a UI page.
+use serde::{Deserialize, Serialize};
+use std::collections::{BTreeMap, BTreeSet};
+
+pub const OPERATORS: &[&str] = &[
+    "RANK",
+    "PERCENTILE",
+    "TOP",
+    "BOTTOM",
+    "TOP_PERCENT",
+    "BOTTOM_PERCENT",
+    "WINSORIZE",
+    "INDUSTRY_NEUTRALIZE",
+    "SIZE_NEUTRALIZE",
+];
+
+#[derive(Clone, Debug, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct Observation {
+    pub symbol: String,
+    pub value: f64,
+    pub industry: Option<String>,
+    pub market_cap: Option<f64>,
+}
+#[derive(Debug, Serialize)]
+pub struct Output {
+    pub symbol: String,
+    pub value: f64,
+}
+
+/// Every date ranks the same frozen research universe; unknown inputs invalidate the whole date.
+pub fn rank_history(
+    dates: &[chrono::NaiveDate], universe: &[String], values: &BTreeMap<String, Vec<Option<f64>>>,
+) -> Result<serde_json::Value, String> {
+    use serde_json::json;
+    if dates.is_empty() || dates.windows(2).any(|w| w[0] >= w[1]) || universe.len() < 2
+        || universe.len() > 20_000 || dates.len().saturating_mul(universe.len()) > 2_000_000
+        || universe.iter().collect::<BTreeSet<_>>().len() != universe.len()
+        || values.keys().collect::<BTreeSet<_>>() != universe.iter().collect::<BTreeSet<_>>()
+        || values.values().any(|v| v.len() != dates.len() || v.iter().flatten().any(|v| !v.is_finite())) {
+        return Err("research_rank_history_incomplete_or_invalid_universe".into());
+    }
+    let mut rank = universe.iter().map(|s|(s.clone(),vec![None;dates.len()])).collect::<BTreeMap<_,_>>();
+    let mut percentile = rank.clone();
+    let mut unknown_dates = Vec::new();
+    for (i, date) in dates.iter().enumerate() {
+        let missing = universe.iter().filter(|s|values[*s][i].is_none()).collect::<Vec<_>>();
+        if !missing.is_empty() {
+            unknown_dates.push(json!({"date":date,"missing_count":missing.len(),"missing_symbol_sample":missing.iter().take(20).collect::<Vec<_>>(),"sample_limit":20}));
+            continue;
+        }
+        let observations = universe.iter().map(|s|Observation{symbol:s.clone(),value:values[s][i].unwrap(),industry:None,market_cap:None}).collect::<Vec<_>>();
+        for item in evaluate("RANK", universe, &observations, 0.0)? {rank.get_mut(&item.symbol).unwrap()[i]=Some(item.value);}
+        for item in evaluate("PERCENTILE", universe, &observations, 0.0)? {percentile.get_mut(&item.symbol).unwrap()[i]=Some(item.value);}
+    }
+    Ok(json!({"rank":rank,"percentile":percentile,"unknown_dates":unknown_dates,
+        "universe":universe,"dates":dates,"tie_policy":"average_rank_descending",
+        "membership_policy":"fixed_research_scope_not_historical_index_membership"}))
+}
+
+fn mean(values: &[f64]) -> f64 {
+    let base = values[0];
+    base + values
+        .iter()
+        .skip(1)
+        .map(|v| (v - base) / values.len() as f64)
+        .sum::<f64>()
+}
+fn quantile(sorted: &[f64], p: f64) -> f64 {
+    let x = p * (sorted.len() - 1) as f64;
+    let l = x.floor() as usize;
+    let r = x.ceil() as usize;
+    sorted[l] + (sorted[r] - sorted[l]) * (x - l as f64)
+}
+
+pub fn evaluate(
+    name: &str,
+    universe: &[String],
+    rows: &[Observation],
+    threshold: f64,
+) -> Result<Vec<Output>, String> {
+    let expected = universe.iter().collect::<BTreeSet<_>>();
+    if rows.is_empty()
+        || rows.len() > 20_000
+        || expected.len() != universe.len()
+        || rows.len() != universe.len()
+        || rows.iter().map(|r| &r.symbol).collect::<BTreeSet<_>>() != expected
+        || rows.iter().any(|r| !r.value.is_finite())
+    {
+        return Err("cross_section_incomplete_or_invalid_universe".into());
+    }
+    if !OPERATORS.contains(&name) || !threshold.is_finite() {
+        return Err("cross_section_operator_invalid".into());
+    }
+    if matches!(name, "TOP" | "BOTTOM") && (threshold < 1.0 || threshold.fract() != 0.0)
+        || matches!(name, "TOP_PERCENT" | "BOTTOM_PERCENT") && !(0.0..=1.0).contains(&threshold)
+        || name == "WINSORIZE" && !(0.0..0.5).contains(&threshold)
+    {
+        return Err("cross_section_threshold_invalid".into());
+    }
+    let mut sorted = rows.iter().map(|r| r.value).collect::<Vec<_>>();
+    sorted.sort_by(f64::total_cmp);
+    let mut industry_values: BTreeMap<&str, Vec<f64>> = BTreeMap::new();
+    if name == "INDUSTRY_NEUTRALIZE" {
+        for row in rows {
+            let industry = row
+                .industry
+                .as_deref()
+                .filter(|v| !v.trim().is_empty())
+                .ok_or("cross_section_pit_industry_missing")?;
+            industry_values.entry(industry).or_default().push(row.value);
+        }
+    }
+    let size = if name == "SIZE_NEUTRALIZE" {
+        let x = rows
+            .iter()
+            .map(|r| {
+                r.market_cap
+                    .filter(|v| v.is_finite() && *v > 0.0)
+                    .map(f64::ln)
+                    .ok_or("cross_section_market_cap_missing")
+            })
+            .collect::<Result<Vec<_>, _>>()?;
+        let xm = mean(&x);
+        let ym = mean(&sorted);
+        let variance = x.iter().map(|v| (v - xm).powi(2)).sum::<f64>();
+        if variance == 0.0 || rows.len() < 3 {
+            return Err("cross_section_size_regression_unidentified".into());
+        }
+        let beta = x
+            .iter()
+            .zip(rows)
+            .map(|(x, y)| (x - xm) * (y.value - ym))
+            .sum::<f64>()
+            / variance;
+        Some((x, xm, ym, beta))
+    } else {
+        None
+    };
+    rows.iter()
+        .enumerate()
+        .map(|(index, row)| {
+            let low = sorted.partition_point(|v| *v < row.value);
+            let high = sorted.partition_point(|v| *v <= row.value);
+            let rank = (low + 1 + high) as f64 / 2.0;
+            let descending = (rows.len() + 1) as f64 - rank;
+            let percentile = if rows.len() == 1 {
+                0.5
+            } else {
+                (rank - 1.0) / (rows.len() - 1) as f64
+            };
+            let value = match name {
+                "RANK" => descending,
+                "PERCENTILE" => percentile,
+                "TOP" => f64::from(descending <= threshold),
+                "BOTTOM" => f64::from(rank <= threshold),
+                "TOP_PERCENT" => f64::from(descending <= threshold * rows.len() as f64),
+                "BOTTOM_PERCENT" => f64::from(rank <= threshold * rows.len() as f64),
+                "WINSORIZE" => row.value.clamp(
+                    quantile(&sorted, threshold),
+                    quantile(&sorted, 1.0 - threshold),
+                ),
+                "INDUSTRY_NEUTRALIZE" => {
+                    row.value - mean(&industry_values[row.industry.as_deref().unwrap()])
+                }
+                "SIZE_NEUTRALIZE" => {
+                    let (x, xm, ym, beta) = size.as_ref().unwrap();
+                    row.value - (ym + beta * (x[index] - xm))
+                }
+                _ => unreachable!(),
+            };
+            if !value.is_finite() {
+                return Err("cross_section_result_nonfinite".into());
+            }
+            Ok(Output {
+                symbol: row.symbol.clone(),
+                value,
+            })
+        })
+        .collect()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    #[test]
+    fn historical_ranks_keep_ties_and_unknown_full_cross_sections() {
+        let dates=["2026-09-07","2026-09-08","2026-09-09"].map(|d|d.parse().unwrap());
+        let universe=vec!["A".into(),"B".into(),"C".into()];
+        let values=BTreeMap::from([("A".into(),vec![None,Some(10.0),Some(20.0)]),("B".into(),vec![Some(10.0),Some(10.0),Some(10.0)]),("C".into(),vec![Some(20.0),Some(5.0),Some(15.0)])]);
+        let out=rank_history(&dates,&universe,&values).unwrap();
+        assert_eq!(out["rank"]["A"],serde_json::json!([null,1.5,1.0]));
+        assert_eq!(out["rank"]["C"],serde_json::json!([null,3.0,2.0]));
+        assert_eq!(out["unknown_dates"][0]["missing_count"],1);
+        let earlier=values.iter().map(|(s,v)|(s.clone(),v[..2].to_vec())).collect();
+        let first=rank_history(&dates[..2],&universe,&earlier).unwrap();
+        assert_eq!(&out["rank"]["A"].as_array().unwrap()[..2],first["rank"]["A"].as_array().unwrap());
+        assert!(rank_history(&dates,&universe[..2],&values).is_err());
+    }
+    fn rows() -> Vec<Observation> {
+        [1.0, 3.0, 3.0, 4.0]
+            .iter()
+            .enumerate()
+            .map(|(i, &value)| Observation {
+                symbol: format!("S{i}"),
+                value,
+                industry: Some(if i < 2 { "A" } else { "B" }.into()),
+                market_cap: Some(10.0 + i as f64),
+            })
+            .collect()
+    }
+    #[test]
+    fn ties_keep_equal_rank_and_missing_universe_rejects() {
+        let r = rows();
+        let u = r.iter().map(|r| r.symbol.clone()).collect::<Vec<_>>();
+        let out = evaluate("RANK", &u, &r, 0.0).unwrap();
+        assert_eq!(
+            out.iter().map(|r| r.value).collect::<Vec<_>>(),
+            vec![4.0, 2.5, 2.5, 1.0]
+        );
+        assert!(evaluate("RANK", &u, &r[..3], 0.0).is_err());
+    }
+    #[test]
+    fn neutralization_preserves_input_order() {
+        let r = rows();
+        let u = r.iter().map(|r| r.symbol.clone()).collect::<Vec<_>>();
+        let out = evaluate("INDUSTRY_NEUTRALIZE", &u, &r, 0.0).unwrap();
+        assert_eq!(
+            out.iter().map(|r| r.value).collect::<Vec<_>>(),
+            vec![-1.0, 1.0, -0.5, 0.5]
+        );
+        assert!(evaluate("TOP_PERCENT", &u, &r, 20.0).is_err());
+    }
+}

crates/fidc-core/src/factor_event_catalog.rs

@@ -0,0 +1,52 @@
+//! Indicator metadata is versioned independently from the numerical kernel.
+use crate::factor_events::{CONTRACT, OPERATORS, TA_REV};
+use serde_json::{Value, json};
+use ta_lib::abstract_api::{self, OptInputType};
+
+pub fn catalog() -> Value {
+    use sha2::{Digest, Sha256};
+    let mut implementation = Sha256::new();
+    for file in [include_bytes!("factor_events.rs").as_slice(), include_bytes!("factor_cross_section.rs").as_slice(),
+        include_bytes!("daily_patterns.rs").as_slice(),include_bytes!("market_event_context.rs").as_slice(),
+        include_bytes!("session_events.rs").as_slice(),include_bytes!("pattern_context.rs").as_slice(),TA_REV.as_bytes()] {implementation.update(file);}
+    let implementation_sha256=format!("{:x}",implementation.finalize());
+    let indicators: Vec<Value> = abstract_api::funcs().map(|f| json!({
+        "name":f.name, "group":format!("{:?}",f.group), "description":f.hint,
+        "inputs":f.inputs.iter().map(|p|json!({"name":p.param_name,"kind":format!("{:?}",p.kind),"flags":p.flags.0})).collect::<Vec<_>>(),
+        "parameters":f.opt_inputs.iter().map(|p|json!({"name":p.param_name,"label":p.display_name,"description":p.hint,"domain":parameter_domain(p.kind)})).collect::<Vec<_>>(),
+        "outputs":f.outputs.iter().enumerate().map(|(i,p)|json!({"index":i,"name":p.param_name,"kind":format!("{:?}",p.kind)})).collect::<Vec<_>>(),
+        "unstable_period":format!("{:?}",f.unst_id), "production_eligible":false,
+    })).collect();
+    json!({"contract":CONTRACT,"parameter_domain_contract":"fidc.indicator-parameter-domain/v1","expression_kernel_sha256":implementation_sha256,"library":{"name":"TA-Lib native Rust","revision":TA_REV,"license":"BSD-3-Clause"},
+        "execution_context_contract":crate::pattern_context::CONTRACT,
+        "execution_context_fields":crate::pattern_context::CONTEXT_FIELDS,
+        "market_event_context_contract":crate::market_event_context::CONTRACT,
+        "market_event_kernel_sha256":crate::market_event_context::implementation_sha256(),
+        "market_event_common_fields":crate::market_event_context::COMMON_FIELDS,
+        "market_event_industry_fields":crate::market_event_context::INDUSTRY_FIELDS,
+        "session_events":crate::session_events::EVENTS,"session_event_contract":crate::session_events::CONTRACT,
+        "indicators":indicators,"operators":OPERATORS,"cross_section_operators":crate::factor_cross_section::OPERATORS,"read_only":true,"live_routing":false,
+        "policies":{"null":"unknown_not_false","warmup":"null_until_full_history","recursive_seed":"frozen_input_start",
+        "breakout":"previous_window_excludes_current","boolean":"three_valued_logic","daily_execution":"next_completed_session",
+        "minute_execution":"strictly_after_completed_bar","cross_section":"requires_separate_complete_universe_contract"}})
+}
+
+pub(crate) fn parameter_domain(kind: OptInputType) -> Value {
+    match kind {
+        OptInputType::IntegerRange { min, max, default, .. } => json!({
+            "value_type":"integer", "minimum":min, "maximum":max, "default":default,
+        }),
+        OptInputType::RealRange { min, max, default, precision, .. } => json!({
+            "value_type":"number", "minimum":min, "maximum":max,
+            "default":default, "display_precision":precision,
+        }),
+        OptInputType::IntegerList { values, default } => json!({
+            "value_type":"integer", "default":default,
+            "choices":values.iter().map(|(value,label)|json!({"value":value,"label":label})).collect::<Vec<_>>(),
+        }),
+        OptInputType::RealList { values, default } => json!({
+            "value_type":"number", "default":default,
+            "choices":values.iter().map(|(value,label)|json!({"value":value,"label":label})).collect::<Vec<_>>(),
+        }),
+    }
+}

crates/fidc-core/src/factor_events.rs

@@ -0,0 +1,936 @@
+//! Causal, typed indicator/event expressions shared by research and trading.
+use chrono::{DateTime, FixedOffset};
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+use std::collections::BTreeMap;
+use ta_lib::{
+    Core,
+    abstract_api::{self, InputType, OptInputType, OutputType},
+};
+
+pub const CONTRACT: &str = "fidc_factor_event_expression_v1";
+pub const TA_REV: &str = "dd5a90259a3f9e04e2da9f38bf0719a841b40108";
+
+pub fn field_dependencies(expr: &Expr) -> std::collections::BTreeSet<String> {
+    let mut fields = std::collections::BTreeSet::new();
+    match expr {
+        Expr::Field { name } => {
+            fields.insert(name.clone());
+        }
+        Expr::Indicator { inputs, .. } => {
+            for e in inputs {
+                fields.extend(field_dependencies(e));
+            }
+        }
+        Expr::Operator { args, .. } => {
+            for e in args {
+                fields.extend(field_dependencies(e));
+            }
+        }
+        _ => {}
+    }
+    fields
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(tag = "kind", rename_all = "snake_case", deny_unknown_fields)]
+pub enum Expr {
+    Number {
+        value: f64,
+    },
+    Field {
+        name: String,
+    },
+    Indicator {
+        name: String,
+        #[serde(default)]
+        inputs: Vec<Expr>,
+        #[serde(default)]
+        parameters: BTreeMap<String, Value>,
+        #[serde(default)]
+        output: usize,
+    },
+    Operator {
+        name: String,
+        args: Vec<Expr>,
+        #[serde(default, skip_serializing_if = "Option::is_none")]
+        window: Option<usize>,
+    },
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct Frame {
+    pub symbol: String,
+    pub frequency: String,
+    pub decision_at: DateTime<FixedOffset>,
+    pub timestamps: Vec<DateTime<FixedOffset>>,
+    pub available_at: Vec<DateTime<FixedOffset>>,
+    pub fields: BTreeMap<String, Vec<Option<f64>>>,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize)]
+#[serde(rename_all = "snake_case")]
+pub enum ValueType {
+    Number,
+    Boolean,
+}
+
+#[derive(Debug, Clone, Serialize)]
+pub struct Series {
+    pub value_type: ValueType,
+    pub values: Vec<Option<f64>>,
+}
+
+pub(crate) const OPERATORS: &[&str] = &[
+    "GT",
+    "GTE",
+    "LT",
+    "LTE",
+    "EQ",
+    "NEQ",
+    "BETWEEN",
+    "OUTSIDE",
+    "CROSS_ABOVE",
+    "CROSS_BELOW",
+    "BREAK_ABOVE",
+    "BREAK_BELOW",
+    "BREAK_HIGH",
+    "BREAK_LOW",
+    "CHANGE",
+    "DIFF",
+    "DELTA",
+    "PCT_CHANGE",
+    "LOG_RETURN",
+    "RISING",
+    "FALLING",
+    "NON_DECREASING",
+    "NON_INCREASING",
+    "TURN_UP",
+    "TURN_DOWN",
+    "BOTTOM_REVERSAL",
+    "TOP_REVERSAL",
+    "SLOPE",
+    "SLOPE_CHANGE",
+    "ACCELERATION",
+    "HHV",
+    "LLV",
+    "ARGMAX",
+    "ARGMIN",
+    "DISTANCE_TO_HIGH",
+    "DISTANCE_TO_LOW",
+    "NEW_HIGH",
+    "NEW_LOW",
+    "NEAR_HIGH",
+    "NEAR_LOW",
+    "BULLISH_DIVERGENCE",
+    "BEARISH_DIVERGENCE",
+    "ZSCORE",
+    "MINMAX",
+    "STANDARDIZE",
+    "NORMALIZE",
+    "COUNT",
+    "COUNT_TRUE",
+    "CONSECUTIVE",
+    "BARS_SINCE",
+    "DURATION",
+    "DAYS_SINCE",
+    "TIME_SINCE",
+    "REF",
+    "LAG",
+    "PREV",
+    "SHIFT",
+    "ROLLING_MEAN",
+    "ROLLING_SUM",
+    "ROLLING_STD",
+    "ROLLING_MAX",
+    "ROLLING_MIN",
+    "ROLLING_MEDIAN",
+    "ROLLING_CORR",
+    "ROLLING_COV",
+    "AND",
+    "OR",
+    "NOT",
+    "XOR",
+    "ADD",
+    "SUB",
+    "MUL",
+    "DIV",
+    "ABS",
+    "MAX",
+    "MIN",
+    "LOG",
+    "SQRT",
+    "POWER",
+    "CUMMAX",
+    "CUMMIN",
+    "SIGN",
+    "IF",
+];
+
+pub use crate::factor_event_catalog::catalog;
+
+impl Frame {
+    pub fn validate(&self) -> Result<(), String> {
+        let n = self.timestamps.len();
+        if self.symbol.is_empty()
+            || n == 0
+            || n > 200_000
+            || self.available_at.len() != n
+            || self.fields.len() > 100
+            || n.saturating_mul(self.fields.len()) > 1_000_000
+        {
+            return Err("factor_frame_invalid: identity/shape/limit".into());
+        }
+        if !["1d", "1w", "1m", "5m", "15m", "30m", "60m"].contains(&self.frequency.as_str()) {
+            return Err("factor_frame_invalid: unsupported_frequency".into());
+        }
+        for i in 0..n {
+            if (i > 0 && self.timestamps[i] <= self.timestamps[i - 1])
+                || self.available_at[i] < self.timestamps[i]
+                || self.available_at[i] > self.decision_at
+            {
+                return Err(format!(
+                    "factor_input_not_visible: {} index={i}",
+                    self.symbol
+                ));
+            }
+        }
+        for (field, values) in &self.fields {
+            if values.len() != n || values.iter().flatten().any(|v| !v.is_finite()) {
+                return Err(format!("factor_field_invalid: {} {field}", self.symbol));
+            }
+        }
+        Ok(())
+    }
+}
+
+pub fn evaluate(expr: &Expr, frame: &Frame) -> Result<Series, String> {
+    frame.validate()?;
+    fn cost(expr: &Expr, depth: usize, nodes: &mut usize) -> Result<usize, String> {
+        *nodes += 1;
+        if depth > 24 || *nodes > 256 {
+            return Err("factor_expression_size_exceeded".into());
+        }
+        let (children, own) = match expr {
+            Expr::Indicator {
+                inputs, parameters, ..
+            } => (
+                inputs.as_slice(),
+                parameters
+                    .values()
+                    .filter_map(Value::as_u64)
+                    .max()
+                    .unwrap_or(30)
+                    .min(1_000_000) as usize,
+            ),
+            Expr::Operator { args, window, .. } => (args.as_slice(), window.unwrap_or(1)),
+            _ => (&[][..], 1),
+        };
+        children.iter().try_fold(own, |total, child| {
+            Ok(total.saturating_add(cost(child, depth + 1, nodes)?))
+        })
+    }
+    if frame
+        .timestamps
+        .len()
+        .saturating_mul(cost(expr, 0, &mut 0)?)
+        > 20_000_000
+    {
+        return Err("factor_expression_compute_budget_exceeded".into());
+    }
+    evaluate_inner(expr, frame, 0)
+}
+
+fn evaluate_inner(expr: &Expr, frame: &Frame, depth: usize) -> Result<Series, String> {
+    if depth > 24 {
+        return Err("factor_expression_too_deep".into());
+    }
+    match expr {
+        Expr::Number { value } if value.is_finite() => Ok(Series {
+            value_type: ValueType::Number,
+            values: vec![Some(*value); frame.timestamps.len()],
+        }),
+        Expr::Number { .. } => Err("factor_constant_nonfinite".into()),
+        Expr::Field { name } => Ok(Series {
+            value_type: ValueType::Number,
+            values: frame
+                .fields
+                .get(name)
+                .ok_or_else(|| format!("factor_source_field_missing: {} {name}", frame.symbol))?
+                .clone(),
+        }),
+        Expr::Indicator {
+            name,
+            inputs,
+            parameters,
+            output,
+        } => indicator(name, inputs, parameters, *output, frame, depth),
+        Expr::Operator { name, args, window } => {
+            if args.len() > 16 {
+                return Err("factor_operator_arity_exceeded".into());
+            }
+            let args = args
+                .iter()
+                .map(|a| evaluate_inner(a, frame, depth + 1))
+                .collect::<Result<Vec<_>, _>>()?;
+            operator(name, &args, *window, frame)
+        }
+    }
+}
+
+fn indicator(
+    name: &str,
+    inputs: &[Expr],
+    parameters: &BTreeMap<String, Value>,
+    output: usize,
+    frame: &Frame,
+    depth: usize,
+) -> Result<Series, String> {
+    let id =
+        abstract_api::get_func_handle(name).ok_or_else(|| format!("indicator_unknown: {name}"))?;
+    let info = id.info();
+    if output >= info.outputs.len() {
+        return Err("indicator_output_invalid".into());
+    }
+    let real_count = info
+        .inputs
+        .iter()
+        .filter(|i| i.kind == InputType::Real)
+        .count();
+    if inputs.len() != real_count || info.inputs.iter().any(|i| i.kind == InputType::Integer) {
+        return Err(format!(
+            "indicator_inputs_invalid: {name} expects {real_count} real series"
+        ));
+    }
+    let mut data = inputs
+        .iter()
+        .map(|a| evaluate_inner(a, frame, depth + 1))
+        .collect::<Result<Vec<_>, _>>()?;
+    if data.iter().any(|s| s.value_type != ValueType::Number) {
+        return Err("indicator_requires_numeric_input".into());
+    }
+    let price_names = ["open", "high", "low", "close", "volume", "open_interest"];
+    let flags = info
+        .inputs
+        .iter()
+        .filter(|i| i.kind == InputType::Price)
+        .fold(0, |v, i| v | i.flags.0);
+    let mut price_indices = [None; 6];
+    for (i, field) in price_names.iter().enumerate() {
+        if flags & (1 << i) != 0 {
+            price_indices[i] = Some(data.len());
+            data.push(evaluate_inner(
+                &Expr::Field {
+                    name: (*field).into(),
+                },
+                frame,
+                depth + 1,
+            )?);
+        }
+    }
+    let core = Core::new();
+    let mut validation = id.new_call(&core);
+    for (key, v) in parameters {
+        let slot = info
+            .opt_inputs
+            .iter()
+            .position(|p| p.param_name == key)
+            .ok_or_else(|| format!("indicator_parameter_unknown: {name}.{key}"))?;
+        match info.opt_inputs[slot].kind {
+            OptInputType::IntegerRange { .. } | OptInputType::IntegerList { .. } => {
+                let v = v
+                    .as_i64()
+                    .and_then(|v| i32::try_from(v).ok())
+                    .ok_or("indicator_parameter_requires_integer")?;
+                validation.set_opt(slot, v).map_err(|e| format!("{e:?}"))?;
+            }
+            _ => {
+                validation
+                    .set_opt(
+                        slot,
+                        v.as_f64()
+                            .filter(|v| v.is_finite())
+                            .ok_or("indicator_parameter_requires_finite_number")?,
+                    )
+                    .map_err(|e| format!("{e:?}"))?;
+            }
+        }
+    }
+    let lookback = validation
+        .lookback()
+        .map_err(|e| format!("indicator_parameter_invalid: {name} {e:?}"))?;
+    let n = frame.timestamps.len();
+    let mut result = vec![None; n];
+    let mut start = 0;
+    // Never bridge missing source observations. Recursive indicators rewarm after a gap.
+    while start < n {
+        if data.iter().any(|s| s.values[start].is_none()) {
+            start += 1;
+            continue;
+        }
+        let mut end = start + 1;
+        while end < n && data.iter().all(|s| s.values[end].is_some()) {
+            end += 1;
+        }
+        if end - start <= lookback {
+            start = end;
+            continue;
+        }
+        let arrays = data
+            .iter()
+            .map(|s| {
+                s.values[start..end]
+                    .iter()
+                    .map(|v| v.unwrap())
+                    .collect::<Vec<_>>()
+            })
+            .collect::<Vec<_>>();
+        let mut float_out = (0..info.outputs.len())
+            .map(|_| vec![0.0; end - start])
+            .collect::<Vec<_>>();
+        let mut int_out = (0..info.outputs.len())
+            .map(|_| vec![0i32; end - start])
+            .collect::<Vec<_>>();
+        let mut call = id.new_call(&core);
+        for (key, v) in parameters {
+            let slot = info
+                .opt_inputs
+                .iter()
+                .position(|p| p.param_name == key)
+                .unwrap();
+            match info.opt_inputs[slot].kind {
+                OptInputType::IntegerRange { .. } | OptInputType::IntegerList { .. } => {
+                    call.set_opt(slot, v.as_i64().unwrap() as i32)
+                        .map_err(|e| format!("{e:?}"))?;
+                }
+                _ => {
+                    call.set_opt(slot, v.as_f64().unwrap())
+                        .map_err(|e| format!("{e:?}"))?;
+                }
+            }
+        }
+        let mut real_slot = 0;
+        for (slot, i) in info.inputs.iter().enumerate() {
+            if i.kind == InputType::Real {
+                call.set_input(slot, &arrays[real_slot])
+                    .map_err(|e| format!("{e:?}"))?;
+                real_slot += 1;
+            } else {
+                let p = price_indices.map(|i| i.map(|i| arrays[i].as_slice()));
+                call.set_price_input(slot, p[0], p[1], p[2], p[3], p[4], p[5])
+                    .map_err(|e| format!("{e:?}"))?;
+            }
+        }
+        for (slot, (floats, ints)) in float_out.iter_mut().zip(int_out.iter_mut()).enumerate() {
+            if info.outputs[slot].kind == OutputType::Real {
+                call.set_output(slot, floats)
+                    .map_err(|e| format!("{e:?}"))?;
+            } else {
+                call.set_int_output(slot, ints)
+                    .map_err(|e| format!("{e:?}"))?;
+            }
+        }
+        let range = call
+            .call(0, end - start - 1)
+            .map_err(|e| format!("indicator_failed: {name} {e:?}"))?;
+        drop(call);
+        for j in 0..range.count {
+            let value = if info.outputs[output].kind == OutputType::Real {
+                float_out[output][j]
+            } else {
+                int_out[output][j] as f64
+            };
+            if !value.is_finite() {
+                return Err(format!(
+                    "indicator_nonfinite: {name} index={}",
+                    start + range.beg_idx + j
+                ));
+            }
+            result[start + range.beg_idx + j] = Some(value);
+        }
+        start = end;
+    }
+    Ok(Series {
+        value_type: ValueType::Number,
+        values: result,
+    })
+}
+
+fn average(v: &[f64]) -> f64 {
+    v[0] + v
+        .iter()
+        .skip(1)
+        .map(|x| (x - v[0]) / v.len() as f64)
+        .sum::<f64>()
+}
+fn slope(v: &[f64]) -> f64 {
+    let x = (v.len() - 1) as f64 / 2.0;
+    let y = average(v);
+    let num = v
+        .iter()
+        .enumerate()
+        .map(|(i, v)| (i as f64 - x) * (v - y))
+        .sum::<f64>();
+    let den = (0..v.len()).map(|i| (i as f64 - x).powi(2)).sum::<f64>();
+    num / den
+}
+fn boolean(v: bool) -> Option<f64> {
+    Some(if v { 1.0 } else { 0.0 })
+}
+
+fn operator(
+    name: &str,
+    args: &[Series],
+    window: Option<usize>,
+    frame: &Frame,
+) -> Result<Series, String> {
+    if !OPERATORS.contains(&name) {
+        return Err(format!("operator_not_registered: {name}"));
+    }
+    let bool_input = matches!(
+        name,
+        "AND"
+            | "OR"
+            | "NOT"
+            | "XOR"
+            | "COUNT"
+            | "COUNT_TRUE"
+            | "CONSECUTIVE"
+            | "BARS_SINCE"
+            | "DURATION"
+            | "DAYS_SINCE"
+            | "TIME_SINCE"
+    );
+    let lag = matches!(name, "REF" | "LAG" | "PREV" | "SHIFT");
+    if args.is_empty()
+        || (name == "IF"
+            && (args.len() != 3
+                || args[0].value_type != ValueType::Boolean
+                || args[1].value_type != args[2].value_type))
+        || (!lag
+            && name != "IF"
+            && args
+                .iter()
+                .any(|a| (a.value_type == ValueType::Boolean) != bool_input))
+    {
+        return Err(format!("operator_input_type_invalid: {name}"));
+    }
+    let arity = match name {
+        "BETWEEN" | "OUTSIDE" | "IF" => 3,
+        "GT" | "GTE" | "LT" | "LTE" | "EQ" | "NEQ" | "CROSS_ABOVE" | "CROSS_BELOW"
+        | "BREAK_ABOVE" | "BREAK_BELOW" | "ADD" | "SUB" | "MUL" | "DIV" | "MAX" | "MIN"
+        | "POWER" | "XOR" | "ROLLING_CORR" | "ROLLING_COV" | "NEAR_HIGH" | "NEAR_LOW"
+        | "BULLISH_DIVERGENCE" | "BEARISH_DIVERGENCE" => 2,
+        "AND" | "OR" => args.len(),
+        _ => 1,
+    };
+    if args.len() != arity {
+        return Err(format!("operator_arity_invalid: {name}"));
+    }
+    let windowed = matches!(
+        name,
+        "BREAK_HIGH"
+            | "BREAK_LOW"
+            | "RISING"
+            | "FALLING"
+            | "NON_DECREASING"
+            | "NON_INCREASING"
+            | "SLOPE"
+            | "SLOPE_CHANGE"
+            | "HHV"
+            | "LLV"
+            | "ARGMAX"
+            | "ARGMIN"
+            | "DISTANCE_TO_HIGH"
+            | "DISTANCE_TO_LOW"
+            | "NEW_HIGH"
+            | "NEW_LOW"
+            | "NEAR_HIGH"
+            | "NEAR_LOW"
+            | "BULLISH_DIVERGENCE"
+            | "BEARISH_DIVERGENCE"
+            | "ZSCORE"
+            | "STANDARDIZE"
+            | "MINMAX"
+            | "NORMALIZE"
+            | "COUNT"
+            | "COUNT_TRUE"
+    ) || name.starts_with("ROLLING_");
+    let n = window.unwrap_or(1);
+    if n == 0
+        || n > 10_000
+        || (windowed && window.is_none())
+        || (matches!(
+            name,
+            "SLOPE"
+                | "SLOPE_CHANGE"
+                | "ZSCORE"
+                | "STANDARDIZE"
+                | "ROLLING_STD"
+                | "ROLLING_CORR"
+                | "ROLLING_COV"
+        ) && n < 2)
+    {
+        return Err(format!("operator_window_invalid: {name}"));
+    }
+    let returns_bool = matches!(
+        name,
+        "GT" | "GTE"
+            | "LT"
+            | "LTE"
+            | "EQ"
+            | "NEQ"
+            | "BETWEEN"
+            | "OUTSIDE"
+            | "CROSS_ABOVE"
+            | "CROSS_BELOW"
+            | "BREAK_ABOVE"
+            | "BREAK_BELOW"
+            | "BREAK_HIGH"
+            | "BREAK_LOW"
+            | "RISING"
+            | "FALLING"
+            | "NON_DECREASING"
+            | "NON_INCREASING"
+            | "TURN_UP"
+            | "TURN_DOWN"
+            | "BOTTOM_REVERSAL"
+            | "TOP_REVERSAL"
+            | "NEW_HIGH"
+            | "NEW_LOW"
+            | "NEAR_HIGH"
+            | "NEAR_LOW"
+            | "BULLISH_DIVERGENCE"
+            | "BEARISH_DIVERGENCE"
+            | "AND"
+            | "OR"
+            | "NOT"
+            | "XOR"
+    );
+    let len = frame.timestamps.len();
+    let mut out = vec![None; len];
+    let mut last_true = None;
+    let mut consecutive = Some(0usize);
+    let mut extreme: Option<f64> = None;
+    let mut cumulative_complete = true;
+    for i in 0..len {
+        let a = args[0].values[i];
+        let b = args.get(1).and_then(|a| a.values[i]);
+        let at = |j: usize| args[0].values.get(j).copied().flatten();
+        let history = |end: usize, count: usize| -> Option<Vec<f64>> {
+            if end < count {
+                None
+            } else {
+                args[0].values[end - count..end].iter().copied().collect()
+            }
+        };
+        out[i] = match name {
+            "IF" => a.and_then(|a| {
+                if a == 1.0 {
+                    args[1].values[i]
+                } else {
+                    args[2].values[i]
+                }
+            }),
+            "SIGN" => a.map(|v| {
+                if v == 0.0 {
+                    0.0
+                } else if v > 0.0 {
+                    1.0
+                } else {
+                    -1.0
+                }
+            }),
+            "CUMMAX" | "CUMMIN" => {
+                cumulative_complete &= a.is_some();
+                extreme = a.filter(|_| cumulative_complete).map(|v| {
+                    extreme.map_or(v, |p| if name == "CUMMAX" { p.max(v) } else { p.min(v) })
+                });
+                extreme
+            }
+            "AND" => {
+                if args.iter().any(|a| a.values[i] == Some(0.0)) {
+                    Some(0.0)
+                } else if args.iter().any(|a| a.values[i].is_none()) {
+                    None
+                } else {
+                    Some(1.0)
+                }
+            }
+            "OR" => {
+                if args.iter().any(|a| a.values[i] == Some(1.0)) {
+                    Some(1.0)
+                } else if args.iter().any(|a| a.values[i].is_none()) {
+                    None
+                } else {
+                    Some(0.0)
+                }
+            }
+            "NOT" => a.map(|v| 1.0 - v),
+            "XOR" => a.zip(b).and_then(|(a, b)| boolean(a != b)),
+            "GT" | "GTE" | "LT" | "LTE" | "EQ" | "NEQ" => a.zip(b).and_then(|(a, b)| {
+                boolean(match name {
+                    "GT" => a > b,
+                    "GTE" => a >= b,
+                    "LT" => a < b,
+                    "LTE" => a <= b,
+                    "EQ" => a == b,
+                    _ => a != b,
+                })
+            }),
+            "BETWEEN" | "OUTSIDE" => a.zip(b).zip(args[2].values[i]).and_then(|((a, b), c)| {
+                if b > c {
+                    None
+                } else {
+                    boolean((a >= b && a <= c) == (name == "BETWEEN"))
+                }
+            }),
+            "CROSS_ABOVE" | "CROSS_BELOW" | "BREAK_ABOVE" | "BREAK_BELOW" => {
+                if i == 0 {
+                    None
+                } else {
+                    a.zip(b).zip(at(i - 1).zip(args[1].values[i - 1])).and_then(
+                        |((a, b), (p, q))| {
+                            boolean(if name.ends_with("ABOVE") {
+                                p <= q && a > b
+                            } else {
+                                p >= q && a < b
+                            })
+                        },
+                    )
+                }
+            }
+            "REF" | "LAG" | "PREV" | "SHIFT" => i.checked_sub(n).and_then(at),
+            "CHANGE" | "DIFF" | "DELTA" | "PCT_CHANGE" | "LOG_RETURN" => a
+                .zip(i.checked_sub(n).and_then(at))
+                .and_then(|(a, p)| match name {
+                    "PCT_CHANGE" => {
+                        if p == 0.0 {
+                            None
+                        } else {
+                            Some(a / p - 1.0)
+                        }
+                    }
+                    "LOG_RETURN" => {
+                        if a <= 0.0 || p <= 0.0 {
+                            None
+                        } else {
+                            Some((a / p).ln())
+                        }
+                    }
+                    _ => Some(a - p),
+                }),
+            "ACCELERATION" => a
+                .zip(i.checked_sub(n).and_then(at))
+                .zip(i.checked_sub(n * 2).and_then(at))
+                .map(|((a, p), q)| a - 2.0 * p + q),
+            "BULLISH_DIVERGENCE" | "BEARISH_DIVERGENCE" => {
+                if i < n || n < 4 {
+                    None
+                } else {
+                    let price: Option<Vec<f64>> =
+                        args[0].values[i - n..=i].iter().copied().collect();
+                    let indicator: Option<Vec<f64>> =
+                        args[1].values[i - n..=i].iter().copied().collect();
+                    price.zip(indicator).and_then(|(price, indicator)| {
+                        let low = name == "BULLISH_DIVERGENCE";
+                        let pivots = (1..n)
+                            .filter(|&j| {
+                                if low {
+                                    price[j] < price[j - 1] && price[j] < price[j + 1]
+                                } else {
+                                    price[j] > price[j - 1] && price[j] > price[j + 1]
+                                }
+                            })
+                            .collect::<Vec<_>>();
+                        if pivots.last() != Some(&(n - 1)) || pivots.len() < 2 {
+                            return boolean(false);
+                        }
+                        let a = pivots[pivots.len() - 2];
+                        let b = n - 1;
+                        boolean(if low {
+                            price[b] < price[a] && indicator[b] > indicator[a]
+                        } else {
+                            price[b] > price[a] && indicator[b] < indicator[a]
+                        })
+                    })
+                }
+            }
+            "TURN_UP" | "TURN_DOWN" | "BOTTOM_REVERSAL" | "TOP_REVERSAL" => {
+                if i < 2 {
+                    None
+                } else {
+                    a.zip(at(i - 1)).zip(at(i - 2)).and_then(|((a, p), q)| {
+                        if name == "ACCELERATION" {
+                            Some(a - 2.0 * p + q)
+                        } else {
+                            boolean(if matches!(name, "TURN_UP" | "BOTTOM_REVERSAL") {
+                                p < q && a > p
+                            } else {
+                                p > q && a < p
+                            })
+                        }
+                    })
+                }
+            }
+            "ABS" => a.map(f64::abs),
+            "LOG" => a.filter(|v| *v > 0.0).map(f64::ln),
+            "SQRT" => a.filter(|v| *v >= 0.0).map(f64::sqrt),
+            "ADD" => a.zip(b).map(|(a, b)| a + b),
+            "SUB" => a.zip(b).map(|(a, b)| a - b),
+            "MUL" => a.zip(b).map(|(a, b)| a * b),
+            "DIV" => a.zip(b).filter(|(_, b)| *b != 0.0).map(|(a, b)| a / b),
+            "MAX" => a.zip(b).map(|(a, b)| a.max(b)),
+            "MIN" => a.zip(b).map(|(a, b)| a.min(b)),
+            "POWER" => a.zip(b).map(|(a, b)| a.powf(b)),
+            "BARS_SINCE" | "DAYS_SINCE" | "TIME_SINCE" => {
+                if a == Some(1.0) {
+                    last_true = Some(i);
+                }
+                if a.is_none() {
+                    last_true = None;
+                }
+                last_true.map(|t| {
+                    if name == "BARS_SINCE" {
+                        (i - t) as f64
+                    } else {
+                        let secs = (frame.timestamps[i] - frame.timestamps[t]).num_seconds() as f64;
+                        if name == "DAYS_SINCE" {
+                            secs / 86400.0
+                        } else {
+                            secs
+                        }
+                    }
+                })
+            }
+            "CONSECUTIVE" | "DURATION" => {
+                consecutive = match a {
+                    Some(1.0) => consecutive.map(|v| v + 1),
+                    Some(_) => Some(0),
+                    None => None,
+                };
+                consecutive.map(|v| v as f64)
+            }
+            "BREAK_HIGH" | "NEW_HIGH" | "BREAK_LOW" | "NEW_LOW" => {
+                a.zip(history(i, n)).and_then(|(a, v)| {
+                    boolean(if matches!(name, "BREAK_HIGH" | "NEW_HIGH") {
+                        a > v.into_iter().fold(f64::NEG_INFINITY, f64::max)
+                    } else {
+                        a < v.into_iter().fold(f64::INFINITY, f64::min)
+                    })
+                })
+            }
+            "RISING" | "FALLING" | "NON_DECREASING" | "NON_INCREASING" => history(i + 1, n + 1)
+                .and_then(|v| {
+                    boolean(v.windows(2).all(|p| match name {
+                        "RISING" => p[1] > p[0],
+                        "FALLING" => p[1] < p[0],
+                        "NON_DECREASING" => p[1] >= p[0],
+                        _ => p[1] <= p[0],
+                    }))
+                }),
+            "SLOPE_CHANGE" => history(i + 1, n)
+                .zip(history(i, n))
+                .map(|(a, b)| slope(&a) - slope(&b)),
+            _ => history(i + 1, n).and_then(|mut v| {
+                let mean = average(&v);
+                let lo = v.iter().copied().fold(f64::INFINITY, f64::min);
+                let hi = v.iter().copied().fold(f64::NEG_INFINITY, f64::max);
+                let variance = v.iter().map(|v| (v - mean).powi(2)).sum::<f64>() / n as f64;
+                match name {
+                    "HHV" | "ROLLING_MAX" => Some(hi),
+                    "LLV" | "ROLLING_MIN" => Some(lo),
+                    "ARGMAX" => v.iter().rposition(|x| *x == hi).map(|p| (n - 1 - p) as f64),
+                    "ARGMIN" => v.iter().rposition(|x| *x == lo).map(|p| (n - 1 - p) as f64),
+                    "DISTANCE_TO_HIGH" => {
+                        if hi == 0.0 {
+                            None
+                        } else {
+                            Some(v[n - 1] / hi - 1.0)
+                        }
+                    }
+                    "DISTANCE_TO_LOW" => {
+                        if lo == 0.0 {
+                            None
+                        } else {
+                            Some(v[n - 1] / lo - 1.0)
+                        }
+                    }
+                    "NEAR_HIGH" | "NEAR_LOW" => b.filter(|b| *b >= 0.0).and_then(|b| {
+                        let base = if name == "NEAR_HIGH" { hi } else { lo };
+                        if base == 0.0 {
+                            None
+                        } else {
+                            boolean((v[n - 1] / base - 1.0).abs() <= b)
+                        }
+                    }),
+                    "ZSCORE" | "STANDARDIZE" => {
+                        if variance == 0.0 {
+                            None
+                        } else {
+                            Some((v[n - 1] - mean) / variance.sqrt())
+                        }
+                    }
+                    "MINMAX" | "NORMALIZE" => {
+                        if hi == lo {
+                            None
+                        } else {
+                            Some((v[n - 1] - lo) / (hi - lo))
+                        }
+                    }
+                    "ROLLING_MEAN" => Some(mean),
+                    "ROLLING_SUM" | "COUNT" | "COUNT_TRUE" => Some(v.iter().sum()),
+                    "ROLLING_STD" => Some(variance.sqrt()),
+                    "ROLLING_MEDIAN" => {
+                        v.sort_by(f64::total_cmp);
+                        Some(if n % 2 == 1 {
+                            v[n / 2]
+                        } else {
+                            (v[n / 2 - 1] + v[n / 2]) / 2.0
+                        })
+                    }
+                    "SLOPE" => Some(slope(&v)),
+                    "ROLLING_CORR" | "ROLLING_COV" => {
+                        let b: Option<Vec<f64>> =
+                            args[1].values[i + 1 - n..=i].iter().copied().collect();
+                        b.and_then(|b| {
+                            let bm = average(&b);
+                            let cov = v
+                                .iter()
+                                .zip(&b)
+                                .map(|(a, b)| (a - mean) * (b - bm))
+                                .sum::<f64>()
+                                / n as f64;
+                            if name == "ROLLING_COV" {
+                                Some(cov)
+                            } else {
+                                let bv = b.iter().map(|b| (b - bm).powi(2)).sum::<f64>() / n as f64;
+                                let d = (variance * bv).sqrt();
+                                if d == 0.0 { None } else { Some(cov / d) }
+                            }
+                        })
+                    }
+                    _ => None,
+                }
+            }),
+        }
+        .filter(|v| v.is_finite());
+    }
+    Ok(Series {
+        value_type: if name == "IF" {
+            args[1].value_type
+        } else if lag {
+            args[0].value_type
+        } else if returns_bool {
+            ValueType::Boolean
+        } else {
+            ValueType::Number
+        },
+        values: out,
+    })
+}
+
+#[cfg(test)]
+#[path = "factor_events_tests.rs"]
+mod tests;

crates/fidc-core/src/factor_events_tests.rs

@@ -0,0 +1,161 @@
+use super::*;
+use serde_json::json;
+use crate::factor_event_catalog::parameter_domain;
+
+#[test]
+fn every_parameter_domain_is_structured_and_matches_native_defaults() {
+    for function in abstract_api::funcs() {
+        let handle = abstract_api::get_func_handle(function.name).unwrap();
+        let core = Core::new();
+        let mut call = handle.new_call(&core);
+        for (index, parameter) in function.opt_inputs.iter().enumerate() {
+            let domain = parameter_domain(parameter.kind);
+            let default = domain["default"].as_f64().unwrap();
+            assert!(default.is_finite(), "{} {}", function.name, parameter.param_name);
+            if let Some(choices) = domain.get("choices") {
+                assert!(choices.as_array().unwrap().iter().any(|v| v["value"].as_f64() == Some(default)));
+            } else {
+                assert!(default >= domain["minimum"].as_f64().unwrap());
+                assert!(default <= domain["maximum"].as_f64().unwrap());
+            }
+            if domain["value_type"] == "integer" {
+                assert_eq!(default.fract(), 0.0);
+                call.set_opt(index, default as i32).unwrap();
+            } else {
+                call.set_opt(index, default).unwrap();
+            }
+        }
+        assert!(call.lookback().is_ok(), "{}", function.name);
+    }
+}
+
+#[test]
+fn parameter_domains_keep_enumeration_labels_without_debug_string_parsing() {
+    let catalog = catalog();
+    assert_eq!(catalog["parameter_domain_contract"], "fidc.indicator-parameter-domain/v1");
+    let indicators = catalog["indicators"].as_array().unwrap();
+    let rsi = indicators.iter().find(|v| v["name"] == "RSI").unwrap();
+    assert_eq!(rsi["parameters"][0]["domain"]["minimum"], 2);
+    let stoch = indicators.iter().find(|v| v["name"] == "STOCH").unwrap();
+    let ma_type = stoch["parameters"].as_array().unwrap().iter().find(|p| p["name"] == "optInSlowK_MAType").unwrap();
+    assert!(ma_type["domain"]["choices"].as_array().unwrap().iter().any(|v| v["label"] == "EMA" && v["value"] == 1));
+}
+
+fn frame(values: Vec<Option<f64>>) -> Frame {
+    let start = DateTime::parse_from_rfc3339("2026-09-01T15:30:00+08:00").unwrap();
+    let times = (0..values.len())
+        .map(|i| start + chrono::Duration::days(i as i64))
+        .collect::<Vec<_>>();
+    Frame {
+        symbol: "TEST".into(),
+        frequency: "1d".into(),
+        decision_at: *times.last().unwrap(),
+        available_at: times.clone(),
+        timestamps: times,
+        fields: BTreeMap::from([("close".into(), values)]),
+    }
+}
+fn expr(v: Value) -> Expr {
+    serde_json::from_value(v).unwrap()
+}
+#[test]
+fn ta_sma_real_values_and_parameter_validation() {
+    let frame = frame(vec![Some(1.0), Some(2.0), Some(3.0), Some(4.0)]);
+    let e = expr(
+        json!({"kind":"indicator","name":"SMA","inputs":[{"kind":"field","name":"close"}],"parameters":{"optInTimePeriod":3}}),
+    );
+    assert_eq!(
+        evaluate(&e, &frame).unwrap().values,
+        vec![None, None, Some(2.0), Some(3.0)]
+    );
+    let bad = expr(
+        json!({"kind":"indicator","name":"SMA","inputs":[{"kind":"field","name":"close"}],"parameters":{"period":3}}),
+    );
+    assert!(
+        evaluate(&bad, &frame)
+            .unwrap_err()
+            .contains("parameter_unknown")
+    );
+}
+#[test]
+fn cross_is_event_not_state_and_never_uses_future() {
+    let f = frame(vec![
+        Some(9.0),
+        Some(10.0),
+        Some(11.0),
+        Some(12.0),
+        Some(8.0),
+    ]);
+    let e = expr(
+        json!({"kind":"operator","name":"CROSS_ABOVE","args":[{"kind":"field","name":"close"},{"kind":"number","value":10.0}]}),
+    );
+    assert_eq!(
+        evaluate(&e, &f).unwrap().values,
+        vec![None, Some(0.0), Some(1.0), Some(0.0), Some(0.0)]
+    );
+    let mut invalid = f.clone();
+    invalid.available_at[4] = invalid.decision_at + chrono::Duration::seconds(1);
+    assert!(evaluate(&e, &invalid).is_err());
+}
+#[test]
+fn missing_is_not_zero_and_breakout_excludes_current() {
+    let f = frame(vec![Some(1.0), Some(2.0), Some(3.0), None, Some(5.0)]);
+    let e = expr(
+        json!({"kind":"operator","name":"BREAK_HIGH","window":2,"args":[{"kind":"field","name":"close"}]}),
+    );
+    assert_eq!(
+        evaluate(&e, &f).unwrap().values,
+        vec![None, None, Some(1.0), None, None]
+    );
+    let zero = expr(
+        json!({"kind":"operator","name":"DIV","args":[{"kind":"field","name":"close"},{"kind":"number","value":0}]}),
+    );
+    assert!(
+        evaluate(&zero, &f)
+            .unwrap()
+            .values
+            .iter()
+            .all(Option::is_none)
+    );
+}
+#[test]
+fn ta_rewarms_after_gap_and_const_zscore_is_unknown() {
+    let f = frame(vec![Some(1.0), Some(1.0), None, Some(2.0), Some(2.0)]);
+    let e = expr(
+        json!({"kind":"indicator","name":"SMA","inputs":[{"kind":"field","name":"close"}],"parameters":{"optInTimePeriod":2}}),
+    );
+    assert_eq!(
+        evaluate(&e, &f).unwrap().values,
+        vec![None, Some(1.0), None, None, Some(2.0)]
+    );
+    let e = expr(
+        json!({"kind":"operator","name":"ZSCORE","window":2,"args":[{"kind":"field","name":"close"}]}),
+    );
+    assert!(evaluate(&e, &f).unwrap().values.iter().all(Option::is_none));
+}
+#[test]
+fn no_event_has_no_bars_since_and_type_errors_reject() {
+    let f = frame(vec![Some(1.0), Some(1.0), Some(1.0)]);
+    let state = json!({"kind":"operator","name":"GT","args":[{"kind":"field","name":"close"},{"kind":"number","value":5}]});
+    let e = expr(json!({"kind":"operator","name":"BARS_SINCE","args":[state]}));
+    assert!(evaluate(&e, &f).unwrap().values.iter().all(Option::is_none));
+    assert!(
+        evaluate(
+            &expr(
+                json!({"kind":"operator","name":"NOT","args":[{"kind":"field","name":"close"}]})
+            ),
+            &f
+        )
+        .is_err()
+    );
+}
+#[test]
+fn literal_unknown_fields_reject_and_catalog_is_not_trading_permission() {
+    assert!(
+        serde_json::from_value::<Expr>(json!({"kind":"number","value":1,"account_id":2}))
+            .is_err()
+    );
+    let c = catalog();
+    assert!(c["indicators"].as_array().unwrap().len() > 190);
+    assert_eq!(c["live_routing"], false);
+}

crates/fidc-core/src/finite_serialization.rs

@@ -0,0 +1,196 @@
+//! Check typed pending intent numbers before JSON could replace NaN/Inf with null.
+//! This traverses the original Serialize representation without materializing it.
+use serde::{Serialize, Serializer, ser};
+
+#[derive(Clone, Copy)]
+struct Finite;
+
+pub(crate) fn validate(value: &impl Serialize) -> Result<(), serde_json::Error> {
+    value.serialize(Finite)
+}
+
+macro_rules! scalar {
+    ($($method:ident: $ty:ty),* $(,)?) => {$(
+        fn $method(self, _: $ty) -> Result<(), Self::Error> { Ok(()) }
+    )*};
+}
+
+impl Serializer for Finite {
+    type Ok = ();
+    type Error = serde_json::Error;
+    type SerializeSeq = Self;
+    type SerializeTuple = Self;
+    type SerializeTupleStruct = Self;
+    type SerializeTupleVariant = Self;
+    type SerializeMap = Self;
+    type SerializeStruct = Self;
+    type SerializeStructVariant = Self;
+
+    scalar!(serialize_bool: bool, serialize_i8: i8, serialize_i16: i16,
+        serialize_i32: i32, serialize_i64: i64, serialize_i128: i128,
+        serialize_u8: u8, serialize_u16: u16, serialize_u32: u32,
+        serialize_u64: u64, serialize_u128: u128, serialize_char: char,
+        serialize_str: &str, serialize_bytes: &[u8]);
+    fn serialize_f32(self, value: f32) -> Result<(), Self::Error> {
+        self.serialize_f64(f64::from(value))
+    }
+    fn serialize_f64(self, value: f64) -> Result<(), Self::Error> {
+        if value.is_finite() {
+            Ok(())
+        } else {
+            Err(ser::Error::custom(
+                "pending strategy intent contains a non-finite number",
+            ))
+        }
+    }
+    fn serialize_none(self) -> Result<(), Self::Error> {
+        Ok(())
+    }
+    fn serialize_some<T: ?Sized + Serialize>(self, value: &T) -> Result<(), Self::Error> {
+        value.serialize(self)
+    }
+    fn serialize_unit(self) -> Result<(), Self::Error> {
+        Ok(())
+    }
+    fn serialize_unit_struct(self, _: &'static str) -> Result<(), Self::Error> {
+        Ok(())
+    }
+    fn serialize_unit_variant(
+        self,
+        _: &'static str,
+        _: u32,
+        _: &'static str,
+    ) -> Result<(), Self::Error> {
+        Ok(())
+    }
+    fn serialize_newtype_struct<T: ?Sized + Serialize>(
+        self,
+        _: &'static str,
+        value: &T,
+    ) -> Result<(), Self::Error> {
+        value.serialize(self)
+    }
+    fn serialize_newtype_variant<T: ?Sized + Serialize>(
+        self,
+        _: &'static str,
+        _: u32,
+        _: &'static str,
+        value: &T,
+    ) -> Result<(), Self::Error> {
+        value.serialize(self)
+    }
+    fn serialize_seq(self, _: Option<usize>) -> Result<Self, Self::Error> {
+        Ok(self)
+    }
+    fn serialize_tuple(self, _: usize) -> Result<Self, Self::Error> {
+        Ok(self)
+    }
+    fn serialize_tuple_struct(self, _: &'static str, _: usize) -> Result<Self, Self::Error> {
+        Ok(self)
+    }
+    fn serialize_tuple_variant(
+        self,
+        _: &'static str,
+        _: u32,
+        _: &'static str,
+        _: usize,
+    ) -> Result<Self, Self::Error> {
+        Ok(self)
+    }
+    fn serialize_map(self, _: Option<usize>) -> Result<Self, Self::Error> {
+        Ok(self)
+    }
+    fn serialize_struct(self, _: &'static str, _: usize) -> Result<Self, Self::Error> {
+        Ok(self)
+    }
+    fn serialize_struct_variant(
+        self,
+        _: &'static str,
+        _: u32,
+        _: &'static str,
+        _: usize,
+    ) -> Result<Self, Self::Error> {
+        Ok(self)
+    }
+}
+
+macro_rules! sequence {
+    ($trait:ident, $method:ident) => {
+        impl ser::$trait for Finite {
+            type Ok = ();
+            type Error = serde_json::Error;
+            fn $method<T: ?Sized + Serialize>(&mut self, value: &T) -> Result<(), Self::Error> {
+                value.serialize(*self)
+            }
+            fn end(self) -> Result<(), Self::Error> {
+                Ok(())
+            }
+        }
+    };
+}
+sequence!(SerializeSeq, serialize_element);
+sequence!(SerializeTuple, serialize_element);
+sequence!(SerializeTupleStruct, serialize_field);
+sequence!(SerializeTupleVariant, serialize_field);
+
+impl ser::SerializeMap for Finite {
+    type Ok = ();
+    type Error = serde_json::Error;
+    fn serialize_key<T: ?Sized + Serialize>(&mut self, value: &T) -> Result<(), Self::Error> {
+        value.serialize(*self)
+    }
+    fn serialize_value<T: ?Sized + Serialize>(&mut self, value: &T) -> Result<(), Self::Error> {
+        value.serialize(*self)
+    }
+    fn end(self) -> Result<(), Self::Error> {
+        Ok(())
+    }
+}
+
+macro_rules! structure {
+    ($trait:ident) => {
+        impl ser::$trait for Finite {
+            type Ok = ();
+            type Error = serde_json::Error;
+            fn serialize_field<T: ?Sized + Serialize>(
+                &mut self,
+                _: &'static str,
+                value: &T,
+            ) -> Result<(), Self::Error> {
+                value.serialize(*self)
+            }
+            fn end(self) -> Result<(), Self::Error> {
+                Ok(())
+            }
+        }
+    };
+}
+structure!(SerializeStruct);
+structure!(SerializeStructVariant);
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::strategy::{OrderIntent, StrategyDecision};
+
+    #[test]
+    fn pending_numbers_cannot_be_silently_serialized_as_optional_nulls() {
+        for value in [f64::NAN, f64::INFINITY, f64::NEG_INFINITY] {
+            let decision = StrategyDecision {
+                order_intents: vec![
+                    OrderIntent::LimitTargetPercent {
+                        symbol: "000001.SZ".into(),
+                        target_percent: 0.5,
+                        limit_price: value,
+                        reason: "test".into(),
+                    }
+                    .with_time_in_force(crate::strategy::OrderTimeInForce::Day),
+                ],
+                ..Default::default()
+            };
+            assert!(validate(&decision).is_err());
+            assert!(validate(&vec![Some(value)]).is_err());
+        }
+        assert!(validate(&(None::<f64>, vec![0., -0., 0.123456789], "NaN")).is_ok());
+    }
+}

crates/fidc-core/src/fixed_point.rs

@@ -28,6 +28,17 @@ impl FixedMoney {
         self.0
     }
 
+    pub fn to_decimal_string(self) -> String {
+        let magnitude = self.0.unsigned_abs();
+        let scale = MONEY_SCALE as u128;
+        let sign = if self.0 < 0 { "-" } else { "" };
+        let width = MONEY_SCALE.ilog10() as usize;
+        format!("{sign}{}.{:0width$}", magnitude / scale, magnitude % scale)
+            .trim_end_matches('0')
+            .trim_end_matches('.')
+            .to_string()
+    }
+
     pub fn from_decimal_str(value: &str) -> Result<Self, String> {
         let value = value.trim();
         if value.is_empty() {

crates/fidc-core/src/futures.rs

@@ -26,7 +26,7 @@ fn sum_futures_money(values: impl IntoIterator<Item = FixedMoney>, label: &str)
     })
 }
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Serialize)]
 pub enum FuturesDirection {
     Long,
     Short,
@@ -62,7 +62,7 @@ impl FuturesDirection {
     }
 }
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize)]
 pub enum FuturesPositionEffect {
     Open,
     Close,
@@ -81,7 +81,7 @@ impl FuturesPositionEffect {
     }
 }
 
-#[derive(Debug, Clone, Copy)]
+#[derive(Debug, Clone, Copy, Serialize)]
 pub struct FuturesContractSpec {
     pub contract_multiplier: f64,
     pub long_margin_rate: f64,
@@ -190,7 +190,7 @@ impl FuturesTransactionCostModel {
     }
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Serialize)]
 pub struct FuturesOrderIntent {
     pub symbol: String,
     pub direction: FuturesDirection,
@@ -1048,6 +1048,7 @@ impl FuturesAccountState {
                 )
                 .to_f64();
                 report.fill_events.push(FillEvent {
+                    origin: crate::events::FillOrigin::MarketExecution,
                     date,
                     decision_date: None,
                     order_created_date: None,

crates/fidc-core/src/holding_policy.rs

@@ -0,0 +1,384 @@
+use chrono::NaiveDate;
+use serde::{Deserialize, Serialize};
+
+use crate::TradingCalendar;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum TradingActionOrigin {
+    Strategy,
+    Manual,
+}
+
+#[derive(Debug, Clone, Default, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct AutomaticTradeProtection {
+    #[serde(default, deserialize_with = "optional_days")]
+    pub buy_protection_days: u32,
+    #[serde(default, deserialize_with = "optional_days")]
+    pub sell_cooldown_days: u32,
+    #[serde(default, deserialize_with = "optional_days")]
+    pub max_holding_days: u32,
+    #[serde(default, deserialize_with = "optional_locks")]
+    pub locks: Vec<AutomaticTradeLock>,
+}
+
+pub fn deserialize_optional_policy<'de, D: serde::Deserializer<'de>>(
+    deserializer: D,
+) -> Result<AutomaticTradeProtection, D::Error> {
+    Ok(Option::<AutomaticTradeProtection>::deserialize(deserializer)?.unwrap_or_default())
+}
+
+fn optional_days<'de, D: serde::Deserializer<'de>>(deserializer: D) -> Result<u32, D::Error> {
+    let raw = serde_json::Value::deserialize(deserializer)?;
+    if raw.is_null() {
+        return Ok(0);
+    }
+    raw.as_f64()
+        .filter(|value| {
+            value.is_finite() && value.fract() == 0.0 && *value >= 0.0 && *value <= 3650.0
+        })
+        .map(|value| value as u32)
+        .ok_or_else(|| serde::de::Error::custom("protection days must be integers in 0..3650"))
+}
+
+fn optional_locks<'de, D: serde::Deserializer<'de>>(
+    deserializer: D,
+) -> Result<Vec<AutomaticTradeLock>, D::Error> {
+    Ok(Option::<Vec<AutomaticTradeLock>>::deserialize(deserializer)?.unwrap_or_default())
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct AutomaticTradeLock {
+    pub symbol: String,
+    pub start_date: NaiveDate,
+    pub end_date: Option<NaiveDate>,
+}
+
+#[derive(Debug, Clone, Default, PartialEq, Eq)]
+pub struct HoldingLifecycleEvidence {
+    pub has_position: bool,
+    pub opened_date: Option<NaiveDate>,
+    pub last_buy_date: Option<NaiveDate>,
+    pub last_sell_date: Option<NaiveDate>,
+}
+
+#[derive(Debug, Clone, Default, PartialEq, Eq, Serialize)]
+pub struct AutomaticTradePermission {
+    pub buy_denial: Option<&'static str>,
+    pub sell_denial: Option<&'static str>,
+    pub max_holding_exit: bool,
+}
+
+impl AutomaticTradeProtection {
+    pub fn enabled(&self) -> bool {
+        self.buy_protection_days > 0
+            || self.sell_cooldown_days > 0
+            || self.max_holding_days > 0
+            || !self.locks.is_empty()
+    }
+
+    pub fn validate(&self) -> Result<(), String> {
+        if [
+            self.buy_protection_days,
+            self.sell_cooldown_days,
+            self.max_holding_days,
+        ]
+        .into_iter()
+        .any(|days| days > 3650)
+        {
+            return Err("automatic_trade_holding_days_out_of_range: expected 0..3650".into());
+        }
+        if self.locks.len() > 2000 {
+            return Err("automatic_trade_locks_limit: maximum 2000 intervals".into());
+        }
+        for lock in &self.locks {
+            let valid_symbol = lock.symbol.split_once('.').is_some_and(|(code, venue)| {
+                code.len() == 6
+                    && code.bytes().all(|ch| ch.is_ascii_digit())
+                    && matches!(venue, "SH" | "SZ" | "BJ")
+            });
+            if !valid_symbol {
+                return Err(format!(
+                    "automatic_trade_lock_invalid_symbol: {}",
+                    lock.symbol
+                ));
+            }
+            if lock.end_date.is_some_and(|end| end < lock.start_date) {
+                return Err(format!(
+                    "automatic_trade_lock_invalid_interval: {}",
+                    lock.symbol
+                ));
+            }
+        }
+        Ok(())
+    }
+
+    pub fn evaluate(
+        &self,
+        symbol: &str,
+        execution_date: NaiveDate,
+        evidence: &HoldingLifecycleEvidence,
+        calendar: &TradingCalendar,
+    ) -> Result<AutomaticTradePermission, String> {
+        self.evaluate_with_predecessors(symbol, execution_date, evidence, calendar, std::iter::empty())
+    }
+
+    /// Only accept predecessors from validated, actually applied holding
+    /// conversions. Catalog aliases or requested strategy symbols are not
+    /// evidence that a configured lock covers another security.
+    pub fn evaluate_with_predecessors<'a>(
+        &self,
+        symbol: &str,
+        execution_date: NaiveDate,
+        evidence: &HoldingLifecycleEvidence,
+        calendar: &TradingCalendar,
+        verified_predecessors: impl IntoIterator<Item = &'a str>,
+    ) -> Result<AutomaticTradePermission, String> {
+        self.validate()?;
+        let predecessors = verified_predecessors.into_iter().collect::<std::collections::BTreeSet<_>>();
+        if self.locks.iter().any(|lock| {
+            (lock.symbol == symbol || predecessors.contains(lock.symbol.as_str()))
+                && lock.start_date <= execution_date
+                && lock.end_date.is_none_or(|end| execution_date <= end)
+        }) {
+            return Ok(AutomaticTradePermission {
+                buy_denial: Some("automatic_trade_locked"),
+                sell_denial: Some("automatic_trade_locked"),
+                max_holding_exit: false,
+            });
+        }
+        let elapsed = |date: NaiveDate| -> Result<usize, String> {
+            let start = calendar.index_of(date).ok_or_else(|| {
+                format!(
+                    "automatic_trade_holding_calendar_missing: symbol={symbol} fact_date={date}"
+                )
+            })?;
+            let end = calendar.index_of(execution_date).ok_or_else(|| format!("automatic_trade_holding_calendar_missing: symbol={symbol} execution_date={execution_date}"))?;
+            end.checked_sub(start).ok_or_else(|| format!("automatic_trade_holding_future_fact: symbol={symbol} fact_date={date} execution_date={execution_date}"))
+        };
+        let mut decision = AutomaticTradePermission::default();
+        if self.buy_protection_days > 0
+            && evidence.has_position
+            && let Some(date) = evidence.last_buy_date
+            && elapsed(date)? <= self.buy_protection_days as usize
+        {
+            decision.sell_denial = Some("buy_fill_protection");
+        }
+        if self.sell_cooldown_days > 0
+            && let Some(date) = evidence.last_sell_date
+            && elapsed(date)? <= self.sell_cooldown_days as usize
+        {
+            decision.buy_denial = Some("sell_fill_cooldown");
+        }
+        if self.max_holding_days > 0 && evidence.has_position {
+            let opened = evidence.opened_date.ok_or_else(|| format!("automatic_trade_opened_date_missing: symbol={symbol}; require confirmed position lifecycle evidence"))?;
+            decision.max_holding_exit = elapsed(opened)? >= self.max_holding_days as usize
+                && decision.sell_denial.is_none();
+            if decision.max_holding_exit {
+                decision.buy_denial = Some("maximum_holding_exit");
+            }
+        }
+        Ok(decision)
+    }
+
+    /// The caller supplies origin from its authenticated execution path, never
+    /// from an untrusted order-body flag. Broker and ordinary risk checks remain.
+    pub fn evaluate_for_origin(
+        &self,
+        origin: TradingActionOrigin,
+        symbol: &str,
+        execution_date: NaiveDate,
+        evidence: &HoldingLifecycleEvidence,
+        calendar: &TradingCalendar,
+    ) -> Result<AutomaticTradePermission, String> {
+        self.validate()?;
+        match origin {
+            TradingActionOrigin::Strategy => {
+                self.evaluate(symbol, execution_date, evidence, calendar)
+            }
+            TradingActionOrigin::Manual => Ok(AutomaticTradePermission::default()),
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    fn d(value: &str) -> NaiveDate {
+        NaiveDate::parse_from_str(value, "%Y-%m-%d").unwrap()
+    }
+    fn calendar() -> TradingCalendar {
+        TradingCalendar::new(
+            [
+                "2026-09-11",
+                "2026-09-14",
+                "2026-09-15",
+                "2026-09-16",
+                "2026-09-17",
+            ]
+            .into_iter()
+            .map(d)
+            .collect(),
+        )
+    }
+
+    #[test]
+    fn three_complete_sessions_protect_through_wednesday_not_72_hours() {
+        let policy = AutomaticTradeProtection {
+            buy_protection_days: 3,
+            sell_cooldown_days: 3,
+            ..Default::default()
+        };
+        let evidence = HoldingLifecycleEvidence {
+            has_position: true,
+            last_buy_date: Some(d("2026-09-11")),
+            last_sell_date: Some(d("2026-09-11")),
+            ..Default::default()
+        };
+        for day in ["2026-09-11", "2026-09-14", "2026-09-15", "2026-09-16"] {
+            let decision = policy
+                .evaluate("000001.SZ", d(day), &evidence, &calendar())
+                .unwrap();
+            assert_eq!(decision.sell_denial, Some("buy_fill_protection"));
+            assert_eq!(decision.buy_denial, Some("sell_fill_cooldown"));
+        }
+        assert_eq!(
+            policy
+                .evaluate("000001.SZ", d("2026-09-17"), &evidence, &calendar())
+                .unwrap(),
+            AutomaticTradePermission::default()
+        );
+    }
+
+    #[test]
+    fn absolute_locks_are_inclusive_and_override_timed_exit_without_changing_other_symbols() {
+        let policy = AutomaticTradeProtection {
+            max_holding_days: 1,
+            locks: vec![AutomaticTradeLock {
+                symbol: "000001.SZ".into(),
+                start_date: d("2026-09-11"),
+                end_date: Some(d("2026-09-16")),
+            }],
+            ..Default::default()
+        };
+        let evidence = HoldingLifecycleEvidence {
+            has_position: true,
+            opened_date: Some(d("2026-09-11")),
+            ..Default::default()
+        };
+        let locked = policy
+            .evaluate("000001.SZ", d("2026-09-16"), &evidence, &calendar())
+            .unwrap();
+        assert_eq!(locked.sell_denial, Some("automatic_trade_locked"));
+        assert!(!locked.max_holding_exit);
+        assert!(
+            policy
+                .evaluate("600000.SH", d("2026-09-16"), &evidence, &calendar())
+                .unwrap()
+                .max_holding_exit
+        );
+        assert!(
+            policy
+                .evaluate("000001.SZ", d("2026-09-17"), &evidence, &calendar())
+                .unwrap()
+                .max_holding_exit
+        );
+    }
+
+    #[test]
+    fn zero_disabled_and_missing_calendar_or_opened_date_are_not_inferred() {
+        let evidence = HoldingLifecycleEvidence {
+            has_position: true,
+            ..Default::default()
+        };
+        assert_eq!(
+            AutomaticTradeProtection::default()
+                .evaluate(
+                    "000001.SZ",
+                    d("2026-09-17"),
+                    &evidence,
+                    &TradingCalendar::new(vec![])
+                )
+                .unwrap(),
+            AutomaticTradePermission::default()
+        );
+        let policy = AutomaticTradeProtection {
+            max_holding_days: 1,
+            ..Default::default()
+        };
+        assert!(
+            policy
+                .evaluate("000001.SZ", d("2026-09-17"), &evidence, &calendar())
+                .unwrap_err()
+                .contains("opened_date_missing")
+        );
+        let evidence = HoldingLifecycleEvidence {
+            opened_date: Some(d("2026-09-10")),
+            ..evidence
+        };
+        assert!(
+            policy
+                .evaluate("000001.SZ", d("2026-09-17"), &evidence, &calendar())
+                .unwrap_err()
+                .contains("calendar_missing")
+        );
+    }
+
+    #[test]
+    fn manual_origin_only_bypasses_automatic_policy_not_an_order_or_broker_permission() {
+        let policy = AutomaticTradeProtection {
+            locks: vec![AutomaticTradeLock {
+                symbol: "000001.SZ".into(),
+                start_date: d("2026-09-11"),
+                end_date: None,
+            }],
+            ..Default::default()
+        };
+        assert_eq!(
+            policy
+                .evaluate_for_origin(
+                    TradingActionOrigin::Manual,
+                    "000001.SZ",
+                    d("2026-09-14"),
+                    &HoldingLifecycleEvidence::default(),
+                    &calendar()
+                )
+                .unwrap(),
+            AutomaticTradePermission::default()
+        );
+        assert_eq!(
+            policy
+                .evaluate_for_origin(
+                    TradingActionOrigin::Strategy,
+                    "000001.SZ",
+                    d("2026-09-14"),
+                    &HoldingLifecycleEvidence::default(),
+                    &calendar()
+                )
+                .unwrap()
+                .buy_denial,
+            Some("automatic_trade_locked")
+        );
+    }
+
+    #[test]
+    fn opening_date_follows_fills_not_partial_sales_or_corporate_conversions() {
+        let mut portfolio = crate::PortfolioState::new(100_000.0);
+        let position = portfolio.position_mut("000001.SZ");
+        position.buy(d("2026-09-11"), 100, 10.0);
+        position.buy(d("2026-09-14"), 200, 10.0);
+        position.sell(100, 10.0).unwrap();
+        assert_eq!(position.opened_date(), Some(d("2026-09-11")));
+        portfolio
+            .apply_successor_conversion("000001.SZ", "000002.SZ", 2.0, 0.0)
+            .unwrap();
+        let successor = portfolio.position_mut("000002.SZ");
+        assert_eq!(successor.opened_date(), Some(d("2026-09-11")));
+        assert_eq!(successor.last_buy_date(), Some(d("2026-09-14")));
+        successor.sell(400, 5.0).unwrap();
+        assert_eq!(successor.opened_date(), None);
+        successor.buy(d("2026-09-17"), 100, 5.0);
+        assert_eq!(successor.opened_date(), Some(d("2026-09-17")));
+    }
+}

crates/fidc-core/src/instrument.rs

@@ -1,6 +1,17 @@
 use chrono::NaiveDate;
 use serde::{Deserialize, Serialize};
 
+pub fn listed_sector_is_kcb(value: &str) -> Option<bool> {
+    match value.trim().to_ascii_uppercase().as_str() {
+        "科创板" | "KSH" | "STAR" | "STAR_MARKET" => Some(true),
+        "主板" | "沪市主板" | "深市主板" | "中小板" | "中小企业板" | "创业板"
+        | "北交所" | "北证" | "新三板" | "基础层" | "创新层" | "精选层"
+        | "MAIN" | "MAIN_BOARD" | "CHINEXT" | "GEM" | "BJ" | "BJS" | "BJSE"
+        | "BSE" => Some(false),
+        _ => None,
+    }
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct Instrument {
     pub symbol: String,
@@ -16,22 +27,40 @@ pub struct Instrument {
 }
 
 impl Instrument {
+    /// Classification from the admitted security master, never a code prefix
+    /// or a name substring. This does not grant T+0 settlement eligibility.
+    pub fn is_exchange_traded_fund(&self) -> bool {
+        matches!(self.board.trim().to_ascii_uppercase().as_str(), "ETF" | "EXCHANGE_TRADED_FUND")
+    }
+
     pub fn effective_round_lot(&self) -> u32 {
         self.round_lot.max(1)
     }
 
     pub fn minimum_order_quantity(&self) -> u32 {
-        match self.board.trim().to_ascii_uppercase().as_str() {
-            "KSH" => 200,
-            "BJS" | "BJ" | "BJSE" => 100,
-            _ => self.effective_round_lot(),
+        let board = self.board.trim();
+        if board.eq_ignore_ascii_case("KSH") {
+            200
+        } else if board.eq_ignore_ascii_case("BJS")
+            || board.eq_ignore_ascii_case("BJ")
+            || board.eq_ignore_ascii_case("BJSE")
+        {
+            100
+        } else {
+            self.effective_round_lot()
         }
     }
 
     pub fn order_step_size(&self) -> u32 {
-        match self.board.trim().to_ascii_uppercase().as_str() {
-            "KSH" | "BJS" | "BJ" | "BJSE" => 1,
-            _ => self.effective_round_lot(),
+        let board = self.board.trim();
+        if board.eq_ignore_ascii_case("KSH")
+            || board.eq_ignore_ascii_case("BJS")
+            || board.eq_ignore_ascii_case("BJ")
+            || board.eq_ignore_ascii_case("BJSE")
+        {
+            1
+        } else {
+            self.effective_round_lot()
         }
     }
 
@@ -47,8 +76,17 @@ impl Instrument {
 
     pub fn is_active_on(&self, date: NaiveDate) -> bool {
         self.listed_at.is_none_or(|listed_at| listed_at <= date)
-            && !self.is_delisted_before(date)
-            && !(self.status.eq_ignore_ascii_case("inactive") && self.delisted_at.is_none())
+            && !self.is_delisted_on_or_before(date)
+    }
+
+    pub fn dated_market_absence_reason(&self, date: NaiveDate) -> Option<&'static str> {
+        if self.listed_at.is_some_and(|listed| date < listed) {
+            Some("not_yet_listed")
+        } else if self.is_delisted_on_or_before(date) {
+            Some("delisted")
+        } else {
+            None
+        }
     }
 }
 
@@ -56,6 +94,69 @@ fn default_status() -> String {
     "active".to_string()
 }
 
+#[cfg(test)]
+mod tests {
+    use super::{Instrument, listed_sector_is_kcb};
+
+    #[test]
+    fn listing_sector_is_explicit_and_unknown_stays_unknown() {
+        assert_eq!(listed_sector_is_kcb("科创板"), Some(true));
+        assert_eq!(listed_sector_is_kcb(" star "), Some(true));
+        assert_eq!(listed_sector_is_kcb("主板"), Some(false));
+        assert_eq!(listed_sector_is_kcb("创业板"), Some(false));
+        assert_eq!(listed_sector_is_kcb("北证"), Some(false));
+        for value in ["", "-", "SH", "688001.SH", "半导体"] {
+            assert_eq!(listed_sector_is_kcb(value), None);
+        }
+    }
+
+    fn instrument(board: &str, round_lot: u32) -> Instrument {
+        Instrument {
+            symbol: "000001.SZ".to_string(),
+            name: "test".to_string(),
+            board: board.to_string(),
+            round_lot,
+            listed_at: None,
+            delisted_at: None,
+            status: "active".to_string(),
+        }
+    }
+
+    #[test]
+    fn lifecycle_is_dated_and_latest_undated_terminal_status_is_not_historical_evidence() {
+        let mut item = instrument("BJS", 100);
+        let listing = chrono::NaiveDate::from_ymd_opt(2026, 8, 5).unwrap();
+        let removal = chrono::NaiveDate::from_ymd_opt(2026, 9, 10).unwrap();
+        item.listed_at = Some(listing);
+        item.delisted_at = Some(removal);
+        assert_eq!(item.dated_market_absence_reason(listing.pred_opt().unwrap()), Some("not_yet_listed"));
+        assert!(item.is_active_on(listing));
+        assert!(!item.is_active_on(removal));
+        assert_eq!(item.dated_market_absence_reason(removal), Some("delisted"));
+        item.delisted_at = None;
+        for status in ["delisting", "delisted", "inactive", "terminated"] {
+            item.status = status.into();
+            assert!(item.is_active_on(listing));
+            assert_eq!(item.dated_market_absence_reason(listing), None);
+        }
+    }
+
+    #[test]
+    fn order_quantity_rules_are_case_insensitive_without_allocating_normalized_boards() {
+        let kcb = instrument(" kSh ", 100);
+        assert_eq!(kcb.minimum_order_quantity(), 200);
+        assert_eq!(kcb.order_step_size(), 1);
+
+        let bjse = instrument("bjse", 100);
+        assert_eq!(bjse.minimum_order_quantity(), 100);
+        assert_eq!(bjse.order_step_size(), 1);
+
+        let main_board = instrument("SZSE", 50);
+        assert_eq!(main_board.minimum_order_quantity(), 50);
+        assert_eq!(main_board.order_step_size(), 50);
+    }
+}
+
 mod optional_date_format {
     use chrono::NaiveDate;
     use serde::{self, Deserialize, Deserializer, Serializer};

crates/fidc-core/src/lib.rs

@@ -1,23 +1,49 @@
 pub mod broker;
 pub mod calendar;
 pub mod cost;
+mod corporate_book;
 pub mod data;
+mod numeric_factors;
+pub mod daily_patterns;
+pub mod pattern_context;
+pub mod session_events;
+pub mod factor_events;
+pub mod execution_capacity;
+mod etf_execution;
+mod execution_schedule;
+mod factor_event_catalog;
+pub mod factor_cross_section;
+pub mod market_event_context;
 pub mod engine;
 pub mod event_bus;
 pub mod events;
 pub mod fixed_point;
+mod finite_serialization;
 pub mod futures;
 pub mod instrument;
 pub mod metrics;
+pub mod manual_execution;
+mod manual_corporate_replay;
 mod numeric_expr_vm;
 pub mod platform_expr_strategy;
 pub mod platform_runtime_schema;
 pub mod platform_strategy_spec;
 pub mod portfolio;
+pub mod portfolio_loss;
+pub mod position_exposure;
 pub mod risk_control;
 pub mod rules;
 pub mod scheduler;
 pub mod strategy;
+pub mod holding_policy;
+pub mod stock_pool_candidates;
+pub mod stock_pool_indicators;
+pub mod stock_pool_execution;
+pub mod stock_pool_index_policy;
+pub mod stock_pool_market_cap;
+pub mod stock_pool_state;
+pub mod stock_pool_quote_facts;
+pub mod signal_contract;
 pub mod strategy_ai;
 pub mod universe;
 
@@ -31,19 +57,19 @@ pub use data::{
     BenchmarkSnapshot, CandidateEligibility, CorporateAction, DailyFactorSnapshot,
     DailyMarketSnapshot, DailySnapshotBundle, DataSet, DataSetError, DividendRecord,
     EligibleUniverseSnapshot, FactorTextValue, FactorValue, IntradayExecutionQuote,
-    IntradayOrderBookDepthLevel, NumericFactorMap, PriceBar, PriceField, SecuritiesMarginRecord,
-    SplitRecord, YieldCurvePoint,
+    IntradayMarketSnapshotOverlay, IntradayOrderBookDepthLevel, NumericFactorMap, PriceBar,
+    PriceField, SecuritiesMarginRecord, SplitRecord, YieldCurvePoint,
 };
 pub use engine::{
     AnalyzerMonthlyReturnRow, AnalyzerPositionRow, AnalyzerReport, AnalyzerRiskSummary,
     AnalyzerTradeRow, BacktestConfig, BacktestDayProgress, BacktestEngine, BacktestError,
     BacktestResult, BacktestTerminalAssetClass, BacktestTerminalAudit, BacktestTerminalOpenOrder,
     BacktestTerminalStatus, DailyEquityPoint, ExecutionQuoteRequest, FuturesValidationConfig,
-    ProcessEventRetention,
+    ProcessEventRetention, backtest_execution_dates, backtest_execution_dates_with_rules,
 };
 pub use event_bus::{BacktestProcessMod, BacktestProcessModLoader, ProcessEventBus};
 pub use events::{
-    AccountEvent, FillEvent, OrderEvent, OrderSide, OrderStatus, PositionEvent, ProcessEvent,
+    AccountEvent, FillEvent, FillOrigin, OrderEvent, OrderSide, OrderStatus, PositionEvent, ProcessEvent,
     ProcessEventKind,
 };
 pub use fixed_point::{
@@ -56,13 +82,15 @@ pub use futures::{
     FuturesTradingParameter, FuturesTransactionCostModel,
 };
 pub use instrument::Instrument;
-pub use metrics::{BacktestMetrics, compute_backtest_metrics};
+pub use metrics::{
+    BacktestMetrics, RiskFreeRateContract, RiskFreeRateObservation, compute_backtest_metrics,
+};
 pub use platform_expr_strategy::{
     PlatformAccountActionKind, PlatformExplicitActionStage, PlatformExplicitCancelKind,
     PlatformExplicitOrderKind, PlatformExprStrategy, PlatformExprStrategyConfig,
-    PlatformPortfolioDrawdownControlConfig, PlatformRebalanceSchedule, PlatformScheduleFrequency,
-    PlatformSelectionQuotePlan, PlatformStopTakeReferencePriceMode, PlatformTradeAction,
-    PlatformUniverseActionKind,
+    PlatformPortfolioDrawdownControlConfig, PlatformPositionTargetRule, PlatformRebalanceSchedule,
+    PlatformScheduleFrequency, PlatformSelectionQuotePlan, PlatformStopTakeReferencePriceMode,
+    PlatformTradeAction, PlatformUniverseActionKind,
 };
 pub use platform_runtime_schema::{
     PLATFORM_RUNTIME_SCHEMA_VERSION, PlatformRuntimeSchema, reserved_scope_names,
@@ -75,13 +103,13 @@ pub use platform_strategy_spec::{
     StrategyExpressionActionConfig, StrategyExpressionAllocationConfig,
     StrategyExpressionOrderingConfig, StrategyExpressionRiskConfig,
     StrategyExpressionScheduleConfig, StrategyExpressionSelectionConfig,
-    StrategyExpressionTradingConfig, StrategyPortfolioDrawdownControlConfig,
-    StrategyRebalanceSpec, StrategyRiskPolicySpec, StrategyRuntimeEnvironment,
-    StrategyRuntimeExpressions, StrategyRuntimeSpec, StrategyUniverseSpec,
-    platform_expr_config_from_spec, platform_expr_config_from_value,
-    validate_strategy_risk_policy_fields,
+    StrategyExpressionTradingConfig, StrategyPortfolioDrawdownControlConfig, StrategyRebalanceSpec,
+    StrategyRiskPolicySpec, StrategyRuntimeEnvironment, StrategyRuntimeExpressions,
+    StrategyRuntimeSpec, StrategyUniverseSpec, platform_expr_config_from_spec,
+    platform_expr_config_from_value, validate_strategy_risk_policy_fields,
 };
 pub use portfolio::{CashReceivable, HoldingSummary, PendingCashFlow, PortfolioState, Position};
+pub use portfolio_loss::{ClosedPortfolioSession, PortfolioLossConfig, PortfolioLossDecision, PortfolioLossError, PortfolioLossState};
 pub use risk_control::{
     ChinaAShareRiskControl, FidcRiskControlConfig, FidcRiskDecisionAudit, RiskCheckScope,
     StaticRiskRuleConfig, TradingConstraintConfig,

crates/fidc-core/src/manual_corporate_replay.rs

@@ -0,0 +1,434 @@
+use std::cell::{Cell, RefCell};
+use std::collections::{BTreeMap, BTreeSet};
+
+use chrono::{DateTime, FixedOffset, NaiveDate, NaiveDateTime, Utc};
+use sha2::{Digest, Sha256};
+
+use crate::manual_execution::{
+    AppliedManualFill, ManualCorporateActionReference, ManualCorporateAdjustment,
+    ManualCorporatePositionChange, ManualExecutionReplay, ManualFillObservation,
+};
+use crate::{DataSet, FillEvent, FixedMoney, MatchingType, OrderSide, PortfolioState, PriceField};
+
+#[derive(Debug, Clone)]
+struct CashEffect {
+    at: NaiveDateTime,
+    amount: FixedMoney,
+}
+
+/// Replays issued financial facts, never strategy callbacks or hypothetical orders.
+/// The ordinary book remains observable until an actual receipt is delivered.
+pub(crate) struct ManualCorporateReplay {
+    first_date: NaiveDate,
+    sessions: RefCell<BTreeSet<NaiveDate>>,
+    closed: RefCell<BTreeSet<NaiveDate>>,
+    cash: RefCell<Vec<CashEffect>>,
+    reconciled_count: Cell<usize>,
+    cash_dividends: bool,
+    adjust_cost: bool,
+    reinvest: bool,
+    matching: MatchingType,
+    daily_price: PriceField,
+    same_day_mark_at_fill: bool,
+}
+
+impl ManualCorporateReplay {
+    pub(crate) fn new(
+        first_date: NaiveDate,
+        cash_dividends: bool,
+        adjust_cost: bool,
+        reinvest: bool,
+        matching: MatchingType,
+        daily_price: PriceField,
+        same_day_mark_at_fill: bool,
+    ) -> Self {
+        Self {
+            first_date,
+            sessions: RefCell::new(BTreeSet::new()),
+            closed: RefCell::new(BTreeSet::new()),
+            cash: RefCell::new(Vec::new()),
+            reconciled_count: Cell::new(0),
+            cash_dividends,
+            adjust_cost,
+            reinvest,
+            matching,
+            daily_price,
+            same_day_mark_at_fill,
+        }
+    }
+
+    pub(crate) fn record_session(&self, date: NaiveDate) {
+        self.sessions.borrow_mut().insert(date);
+    }
+    pub(crate) fn record_close(&self, date: NaiveDate) {
+        self.closed.borrow_mut().insert(date);
+    }
+    pub(crate) fn committed(&self, count: usize) {
+        self.reconciled_count.set(count);
+    }
+
+    pub(crate) fn record_cash(
+        &self,
+        at: Option<NaiveDateTime>,
+        before: FixedMoney,
+        after: FixedMoney,
+    ) -> Result<(), String> {
+        let amount = after
+            .checked_sub(before)
+            .ok_or("manual corporate cash observation overflow")?;
+        if amount != FixedMoney::ZERO {
+            self.cash.borrow_mut().push(CashEffect {
+                at: at.ok_or("manual corporate cash observation has no execution clock")?,
+                amount,
+            });
+        }
+        Ok(())
+    }
+
+    fn action_references(
+        &self,
+        observation: ManualFillObservation<'_>,
+        data: &DataSet,
+    ) -> Result<Vec<ManualCorporateActionReference>, String> {
+        let mut symbols = BTreeSet::from([observation.order.symbol.clone()]);
+        let observed_date = local(observation.fill.observed_at).date();
+        let mut actions = Vec::new();
+        for date in self.sessions.borrow().range((
+            std::ops::Bound::Excluded(observation.fill.trade_date),
+            std::ops::Bound::Included(observed_date),
+        )) {
+            for action in data.corporate_actions_on(*date) {
+                if !symbols.contains(&action.symbol) {
+                    continue;
+                }
+                let successor_terms = crate::corporate_book::validate_action(action, data)?;
+                let effective = (action.split_ratio() - 1.).abs() > f64::EPSILON
+                    || action.has_successor_conversion()
+                    || (self.cash_dividends && action.share_cash.abs() > f64::EPSILON);
+                if !effective {
+                    continue;
+                }
+                if let Some((successor, _, _)) = successor_terms {
+                    symbols.insert(successor.to_owned());
+                }
+                actions.push(ManualCorporateActionReference {
+                    date: *date,
+                    symbol: action.symbol.clone(),
+                    successor_symbol: action.successor_symbol.clone(),
+                    share_cash: action.share_cash.to_string(),
+                    split_ratio: action.split_ratio().to_string(),
+                    successor_ratio: action.successor_ratio.map(|value| value.to_string()),
+                    successor_cash: action.successor_cash.map(|value| value.to_string()),
+                    sha256: digest(
+                        &serde_json::to_value(action).map_err(|error| error.to_string())?,
+                    )?,
+                });
+            }
+        }
+        Ok(actions)
+    }
+
+    pub(crate) fn required(
+        &self,
+        observation: ManualFillObservation<'_>,
+        data: &DataSet,
+    ) -> Result<bool, String> {
+        Ok(!self.action_references(observation, data)?.is_empty())
+    }
+
+    pub(crate) fn project(
+        &self,
+        source: &ManualExecutionReplay,
+        applied_count: usize,
+        observation: ManualFillObservation<'_>,
+        current: &mut PortfolioState,
+        data: &DataSet,
+        fills: &[FillEvent],
+        has_pending: bool,
+    ) -> Result<(AppliedManualFill, ManualCorporateAdjustment), String> {
+        if has_pending {
+            return Err("manual observation conflicts with pending shadow orders".into());
+        }
+        let all = source.observations()?;
+        if all.get(applied_count).is_none_or(|next| {
+            next.fill.observation_event_id != observation.fill.observation_event_id
+        }) {
+            return Err(
+                "manual corporate observation prefix differs from the immutable trace".into(),
+            );
+        }
+        let actions = self.action_references(observation, data)?;
+        if actions.is_empty() {
+            return Err("manual corporate projection has no processed corporate action".into());
+        }
+        let at = local(observation.fill.observed_at);
+        let reference = self.replay(
+            source,
+            current.initial_cash_fixed(),
+            &all[..applied_count],
+            self.reconciled_count.get(),
+            data,
+            fills,
+            at,
+        )?;
+        let expected = current.financial_replay_identity();
+        let reference_identity = reference.financial_replay_identity();
+        if reference_identity != expected {
+            return Err(format!(
+                "manual corporate ledger coverage mismatch: symbol={} observed_at={} expected={} replayed={}",
+                observation.order.symbol,
+                observation.fill.observed_at,
+                digest(&expected)?,
+                digest(&reference_identity)?
+            ));
+        }
+        let replayed = self.replay(
+            source,
+            current.initial_cash_fixed(),
+            &all[..=applied_count],
+            applied_count + 1,
+            data,
+            fills,
+            at,
+        )?;
+        let replayed_identity = replayed.financial_replay_identity();
+        let gross = FixedMoney::from_decimal_str(&observation.fill.gross_amount()?.to_string())?;
+        let fees = FixedMoney::from_decimal_str(&observation.fill.total_fees()?.to_string())?;
+        let cash_delta = match observation.order.side {
+            OrderSide::Buy => gross.checked_add(fees).and_then(FixedMoney::checked_neg),
+            OrderSide::Sell => gross.checked_sub(fees),
+        }
+        .ok_or("manual corporate trade cash overflow")?;
+        let before = current.cash_fixed();
+        let after = replayed.cash_fixed();
+        let corporate_cash = after
+            .checked_sub(before)
+            .and_then(|delta| delta.checked_sub(cash_delta))
+            .ok_or("manual corporate adjustment overflow")?;
+        let symbols = current
+            .positions()
+            .keys()
+            .chain(replayed.positions().keys())
+            .cloned()
+            .chain(std::iter::once(observation.order.symbol.clone()))
+            .collect::<BTreeSet<_>>();
+        let mut positions = BTreeMap::new();
+        for symbol in symbols {
+            let change = ManualCorporatePositionChange {
+                quantity_before: current
+                    .position(&symbol)
+                    .map_or(0, |position| position.quantity),
+                quantity_after: replayed
+                    .position(&symbol)
+                    .map_or(0, |position| position.quantity),
+                cost_basis_before: current
+                    .financial_position_basis(&symbol)
+                    .to_decimal_string(),
+                cost_basis_after: replayed
+                    .financial_position_basis(&symbol)
+                    .to_decimal_string(),
+            };
+            if change.quantity_before != change.quantity_after
+                || change.cost_basis_before != change.cost_basis_after
+            {
+                positions.insert(symbol, change);
+            }
+        }
+        let quantity_after = replayed
+            .position(&observation.order.symbol)
+            .map_or(0, |position| position.quantity);
+        let adjustment = ManualCorporateAdjustment {
+            schema: "fidc.manual-corporate-adjustment/v1".into(),
+            observed_at: observation.fill.observed_at,
+            cash_dividends_enabled: self.cash_dividends,
+            dividend_cost_basis_adjustment: self.adjust_cost,
+            dividend_reinvestment: self.reinvest,
+            actions,
+            cash_before: before.to_decimal_string(),
+            cash_after: after.to_decimal_string(),
+            corporate_cash_delta: corporate_cash.to_decimal_string(),
+            positions,
+            reference_sha256: digest(&reference_identity)?,
+            replayed_sha256: digest(&replayed_identity)?,
+        };
+        current.replace_replayed_financial_book(replayed)?;
+        Ok((
+            AppliedManualFill {
+                gross,
+                fees,
+                cash_delta,
+                quantity_after,
+            },
+            adjustment,
+        ))
+    }
+
+    fn replay(
+        &self,
+        runtime_input: &ManualExecutionReplay,
+        initial_cash: FixedMoney,
+        manual: &[ManualFillObservation<'_>],
+        economic_count: usize,
+        data: &DataSet,
+        fills: &[FillEvent],
+        at: NaiveDateTime,
+    ) -> Result<PortfolioState, String> {
+        enum Event<'a> {
+            Session,
+            Cash(&'a CashEffect),
+            Corporate(NaiveDate),
+            Settle(NaiveDate),
+            Manual(ManualFillObservation<'a>),
+            Simulated(&'a FillEvent),
+            Close(NaiveDate),
+        }
+        let mut events = Vec::new();
+        let sessions = self.sessions.borrow();
+        let closed = self.closed.borrow();
+        let cash = self.cash.borrow();
+        for date in &*sessions {
+            let clock = date.and_hms_opt(0, 0, 0).unwrap();
+            events.push((clock, 0, 0, Event::Session));
+            events.push((clock, 2, 0, Event::Corporate(*date)));
+            events.push((clock, 3, 0, Event::Settle(*date)));
+        }
+        for (index, effect) in cash.iter().enumerate() {
+            events.push((effect.at, 1, index, Event::Cash(effect)));
+        }
+        for (index, observation) in manual.iter().enumerate() {
+            let clock = if index < economic_count {
+                local(observation.fill.executed_at)
+            } else {
+                local(observation.fill.observed_at)
+            };
+            if clock.date() < self.first_date {
+                return Err("manual corporate execution precedes the represented initial ledger; opening facts are required".into());
+            }
+            events.push((clock, 4, fills.len() + index, Event::Manual(*observation)));
+        }
+        for (index, fill) in fills.iter().enumerate() {
+            fill.validate()?;
+            if fill.origin == crate::events::FillOrigin::DividendReinvestment {
+                // The declared accounting model is recalculated from the
+                // corrected entitlements; this was never a submitted order.
+                continue;
+            }
+            let date = fill.execution_date.unwrap_or(fill.date);
+            // This is the frozen daily matching model, not a broker timestamp.
+            // Intraday contracts must supply their actual execution clock.
+            let clock = match fill.execution_timestamp {
+                Some(clock) => clock,
+                None if matches!(
+                    self.matching,
+                    MatchingType::OpenAuction | MatchingType::NextBarOpen
+                ) =>
+                {
+                    date.and_hms_opt(9, 30, 0).unwrap()
+                }
+                None if self.matching == MatchingType::CurrentBarClose
+                    && self.daily_price == PriceField::Close =>
+                {
+                    date.and_hms_opt(15, 0, 0).unwrap()
+                }
+                None => {
+                    return Err(
+                        "manual corporate replay lacks an intraday fill execution clock".into(),
+                    );
+                }
+            };
+            events.push((clock, 4, index, Event::Simulated(fill)));
+        }
+        for date in &*closed {
+            events.push((
+                date.and_hms_nano_opt(23, 59, 59, 999_999_999)
+                    .unwrap()
+                    .min(at),
+                5,
+                0,
+                Event::Close(*date),
+            ));
+        }
+        events.sort_by_key(|(clock, priority, sequence, _)| (*clock, *priority, *sequence));
+        let mut book = PortfolioState::from_fixed_initial_cash(initial_cash);
+        for (clock, _, _, event) in events {
+            if clock > at {
+                return Err("manual corporate replay contains a future financial fact".into());
+            }
+            match event {
+                Event::Session => book.begin_trading_day(),
+                Event::Cash(effect) => {
+                    book.apply_cash_delta_fixed(effect.amount)?;
+                    if book.cash_fixed() < FixedMoney::ZERO {
+                        return Err(
+                            "manual corporate replay conflicts with prior cash facts".into()
+                        );
+                    }
+                }
+                Event::Corporate(date) => {
+                    crate::corporate_book::apply(
+                        date,
+                        data,
+                        &mut book,
+                        &mut Vec::new(),
+                        self.cash_dividends,
+                        self.adjust_cost,
+                    )
+                    .map_err(|error| error.to_string())?;
+                }
+                Event::Settle(date) => {
+                    crate::corporate_book::settle_receivables(date, data, &mut book, &mut Vec::new(), self.reinvest, Some(runtime_input))
+                        .map_err(|error| error.to_string())?;
+                }
+                Event::Manual(observation) => {
+                    observation.apply(&mut book, data, false)?;
+                }
+                Event::Simulated(fill) => {
+                    let gross = FixedMoney::from_f64(fill.gross_amount)
+                        .ok_or("invalid simulated gross amount")?;
+                    let fees = FixedMoney::checked_sum_f64([
+                        fill.commission,
+                        fill.stamp_tax,
+                        fill.transfer_fee,
+                    ])
+                    .ok_or("invalid simulated fee amount")?;
+                    book.apply_observed_manual_fill(
+                        fill.execution_date.unwrap_or(fill.date),
+                        &fill.symbol,
+                        fill.side,
+                        fill.quantity,
+                        fill.price,
+                        fill.price,
+                        gross,
+                        fees,
+                    )?;
+                    book.prune_flat_positions();
+                }
+                Event::Close(date) => {
+                    book.update_prices_with_options(
+                        date,
+                        data,
+                        PriceField::Close,
+                        self.same_day_mark_at_fill,
+                    )
+                    .map_err(|error| error.to_string())?;
+                }
+            }
+            if book.cash_fixed() < FixedMoney::ZERO {
+                return Err("manual corporate replay would borrow unobserved cash".into());
+            }
+        }
+        Ok(book)
+    }
+}
+
+fn local(value: DateTime<Utc>) -> NaiveDateTime {
+    value
+        .with_timezone(&FixedOffset::east_opt(8 * 3600).unwrap())
+        .naive_local()
+}
+fn digest(value: &serde_json::Value) -> Result<String, String> {
+    Ok(format!(
+        "{:x}",
+        Sha256::digest(serde_json::to_vec(value).map_err(|error| error.to_string())?)
+    ))
+}

crates/fidc-core/src/manual_execution.rs

@@ -0,0 +1,748 @@
+//! Confirmed manual fills are external observations, not simulated broker fills.
+//! The producer must bind these records to the runtime's durable order/audit facts.
+
+use std::collections::{BTreeMap, BTreeSet};
+
+use chrono::{DateTime, FixedOffset, NaiveDate, Timelike, Utc};
+use rust_decimal::Decimal;
+use serde::{Deserialize, Serialize};
+use sha2::{Digest, Sha256};
+
+use crate::events::OrderSide;
+use crate::{DataSet, FixedMoney, PortfolioState};
+use rust_decimal::prelude::ToPrimitive;
+
+pub const MANUAL_REPLAY_SCHEMA: &str = "fidc.observed-manual-executions/v3";
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[serde(deny_unknown_fields, rename_all = "camelCase")]
+pub struct ManualExecutionReplay {
+    pub schema: String,
+    pub runtime_id: String,
+    pub account_id: String,
+    pub source_contract_sha256: String,
+    pub content_sha256: String,
+    pub observation_cutoff: DateTime<Utc>,
+    pub actions: Vec<ManualExecutionAction>,
+    #[serde(default, skip_serializing_if = "Vec::is_empty")]
+    pub position_exposure_events: Vec<crate::position_exposure::PositionExposureEvent>,
+    #[serde(default, skip_serializing_if = "BTreeMap::is_empty")]
+    pub legacy_position_exposure_bps: BTreeMap<NaiveDate, i32>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[serde(deny_unknown_fields, rename_all = "camelCase")]
+pub struct ManualExecutionAction {
+    pub action_id: String,
+    pub source: ManualExecutionSource,
+    pub audit_event_ids: Vec<String>,
+    pub confirmed_at: DateTime<Utc>,
+    pub confirmation_observed_at: DateTime<Utc>,
+    pub outcome: ManualActionOutcome,
+    pub orders: Vec<ManualExecutionOrder>,
+}
+
+#[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq, Eq)]
+#[serde(rename_all = "snake_case")]
+pub enum ManualActionOutcome {
+    NoOrdersNeeded,
+    NotExecuted,
+    OrdersTerminal,
+}
+
+#[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq, Eq)]
+#[serde(rename_all = "snake_case")]
+pub enum ManualExecutionSource {
+    ManualSecurityTrade,
+    ManualPositionAction,
+    ManualRebalance,
+    StockPoolAllocation,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[serde(deny_unknown_fields, rename_all = "camelCase")]
+pub struct ManualExecutionOrder {
+    pub order_id: String,
+    pub broker_order_id: Option<String>,
+    pub source_adapter: Option<String>,
+    pub symbol: String,
+    pub side: OrderSide,
+    pub quantity: u32,
+    pub order_created_at: DateTime<Utc>,
+    pub terminal_observed_at: DateTime<Utc>,
+    pub terminal_status: ManualOrderTerminalStatus,
+    pub fills: Vec<ManualExecutionFill>,
+}
+
+#[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq, Eq)]
+#[serde(rename_all = "snake_case")]
+pub enum ManualOrderTerminalStatus {
+    Filled,
+    Cancelled,
+    Rejected,
+    Expired,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[serde(deny_unknown_fields, rename_all = "camelCase")]
+pub struct ManualExecutionFill {
+    pub trade_id: String,
+    pub observation_event_id: String,
+    pub observation_sequence: u64,
+    pub fee_observation_event_id: String,
+    pub fee_observation_sequence: u64,
+    pub fee_observed_at: DateTime<Utc>,
+    pub trade_date: NaiveDate,
+    pub executed_at: DateTime<Utc>,
+    pub observed_at: DateTime<Utc>,
+    pub timestamp_precision: ManualTimestampPrecision,
+    pub quantity: u32,
+    #[serde(with = "rust_decimal::serde::str")]
+    pub price: Decimal,
+    #[serde(default, with = "rust_decimal::serde::str_option")]
+    pub commission: Option<Decimal>,
+    #[serde(default, with = "rust_decimal::serde::str_option")]
+    pub stamp_tax: Option<Decimal>,
+    #[serde(default, with = "rust_decimal::serde::str_option")]
+    pub transfer_fee: Option<Decimal>,
+    /// Full observed charge, including any venue fees not itemized above.
+    #[serde(with = "rust_decimal::serde::str")]
+    pub total_fee: Decimal,
+}
+
+#[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq, Eq)]
+#[serde(rename_all = "snake_case")]
+pub enum ManualTimestampPrecision {
+    Second,
+    Millisecond,
+    Microsecond,
+    Nanosecond,
+}
+
+impl ManualTimestampPrecision {
+    fn nanoseconds(self) -> i64 {
+        match self {
+            Self::Second => 1_000_000_000,
+            Self::Millisecond => 1_000_000,
+            Self::Microsecond => 1_000,
+            Self::Nanosecond => 1,
+        }
+    }
+}
+
+impl ManualExecutionFill {
+    pub fn gross_amount(&self) -> Result<Decimal, String> {
+        self.price
+            .checked_mul(Decimal::from(self.quantity))
+            .ok_or_else(|| "manual fill gross amount overflow".into())
+    }
+
+    pub fn total_fees(&self) -> Result<Decimal, String> {
+        let known = [self.commission, self.stamp_tax, self.transfer_fee]
+            .into_iter()
+            .flatten()
+            .try_fold(Decimal::ZERO, |sum, fee| {
+                if fee < Decimal::ZERO {
+                    return Err("manual fill fee component is negative");
+                }
+                sum.checked_add(fee).ok_or("manual fill fees overflow")
+            })?;
+        if self.total_fee < known {
+            return Err("manual total fee is below its known components".into());
+        }
+        Ok(self.total_fee)
+    }
+}
+
+fn identifier(value: &str) -> Result<(), String> {
+    if value.is_empty()
+        || value.trim() != value
+        || value.len() > 256
+        || value.chars().any(char::is_control)
+    {
+        return Err("manual execution identity is empty, untrimmed or invalid".into());
+    }
+    Ok(())
+}
+
+impl ManualExecutionReplay {
+    /// Market/indicator data is needed for securities whose observed fills
+    /// change the portfolio. A rejected, never-filled order is not data demand.
+    pub fn required_data_symbols(&self) -> Result<BTreeSet<String>, String> {
+        self.validate()?;
+        Ok(self
+            .actions
+            .iter()
+            .flat_map(|action| &action.orders)
+            .filter(|order| !order.fills.is_empty())
+            .map(|order| order.symbol.clone())
+            .collect())
+    }
+
+    pub fn observations(&self) -> Result<Vec<ManualFillObservation<'_>>, String> {
+        self.validate()?;
+        let mut observations = Vec::new();
+        for action in &self.actions {
+            for order in &action.orders {
+                for fill in &order.fills {
+                    observations.push(ManualFillObservation {
+                        action,
+                        order,
+                        fill,
+                    });
+                }
+            }
+        }
+        observations.sort_by_key(|entry| (entry.fill.observed_at, entry.fill.observation_sequence));
+        Ok(observations)
+    }
+    pub fn content_digest(&self) -> Result<String, String> {
+        let mut value = serde_json::to_value(self).map_err(|error| error.to_string())?;
+        value
+            .as_object_mut()
+            .ok_or("manual replay is not an object")?
+            .remove("contentSha256");
+        let bytes = serde_json::to_vec(&value).map_err(|error| error.to_string())?;
+        Ok(format!("{:x}", Sha256::digest(bytes)))
+    }
+
+    pub fn validate(&self) -> Result<(), String> {
+        if self.schema != MANUAL_REPLAY_SCHEMA
+            && self.schema != "fidc.observed-manual-executions/v2"
+        {
+            return Err("unsupported manual replay schema".into());
+        }
+        if self.schema == "fidc.observed-manual-executions/v2"
+            && (!self.position_exposure_events.is_empty()
+                || !self.legacy_position_exposure_bps.is_empty())
+        {
+            return Err("runtime configuration requires manual replay v3".into());
+        }
+        crate::position_exposure::PositionExposureTimeline::from_events(
+            &self.position_exposure_events,
+        )?;
+        if self.position_exposure_events.iter().any(|event| event.effective_at > self.observation_cutoff) {
+            return Err("observed runtime position event is after the evidence cutoff".into());
+        }
+        if self
+            .legacy_position_exposure_bps
+            .values()
+            .any(|value| !(0..=10000).contains(value))
+        {
+            return Err("legacy manual exposure is outside 0..10000 bps".into());
+        }
+        identifier(&self.runtime_id)?;
+        identifier(&self.account_id)?;
+        if self.source_contract_sha256.len() != 64
+            || !self
+                .source_contract_sha256
+                .bytes()
+                .all(|v| v.is_ascii_hexdigit())
+        {
+            return Err("manual replay source contract hash is invalid".into());
+        }
+        if self.content_digest()? != self.content_sha256 {
+            return Err("manual replay content digest mismatch".into());
+        }
+        if self.actions.len() > 100_000 {
+            return Err("manual replay action limit exceeded; trace was not truncated".into());
+        }
+        let shanghai = FixedOffset::east_opt(8 * 3600).unwrap();
+        let mut actions = BTreeSet::new();
+        let mut audits = BTreeSet::new();
+        let mut orders = BTreeSet::new();
+        let mut broker_orders = BTreeSet::new();
+        let mut trades = BTreeSet::new();
+        let mut observation_events = BTreeSet::new();
+        let mut observation_sequences = BTreeSet::new();
+        let mut fee_observations = BTreeSet::new();
+        let mut receipt_ids = BTreeMap::new();
+        let mut receipt_sequences = BTreeMap::new();
+        for action in &self.actions {
+            identifier(&action.action_id)?;
+            if !actions.insert(action.action_id.as_str())
+                || action.confirmed_at > self.observation_cutoff
+                || action.confirmation_observed_at < action.confirmed_at
+                || action.confirmation_observed_at > self.observation_cutoff
+            {
+                return Err("duplicate manual action or confirmation after cutoff".into());
+            }
+            if action.audit_event_ids.is_empty() {
+                return Err("manual action has no immutable audit binding".into());
+            }
+            if (action.outcome != ManualActionOutcome::OrdersTerminal) != action.orders.is_empty() {
+                return Err("manual action outcome does not prove its order coverage".into());
+            }
+            for id in &action.audit_event_ids {
+                identifier(id)?;
+                if !audits.insert(id.as_str()) {
+                    return Err("manual audit event is bound more than once".into());
+                }
+            }
+            for order in &action.orders {
+                identifier(&order.order_id)?;
+                if let Some(adapter) = &order.source_adapter {
+                    identifier(adapter)?;
+                }
+                identifier(&order.symbol)?;
+                if let Some(id) = &order.broker_order_id {
+                    identifier(id)?;
+                    if !broker_orders.insert((
+                        order
+                            .source_adapter
+                            .as_deref()
+                            .ok_or("broker identity requires its source adapter")?,
+                        order.order_created_at.with_timezone(&shanghai).date_naive(),
+                        id.as_str(),
+                    )) {
+                        return Err("manual local orders share one broker order identity".into());
+                    }
+                }
+                if !order.fills.is_empty() && order.source_adapter.is_none() {
+                    return Err("manual fills require a known source adapter".into());
+                }
+                if !order.fills.is_empty()
+                    && order.source_adapter.as_deref() != Some("paper")
+                    && order.broker_order_id.is_none()
+                {
+                    return Err(
+                        "manual broker fills require their original broker order identity".into(),
+                    );
+                }
+                if !orders.insert(order.order_id.as_str())
+                    || order.quantity == 0
+                    || order.quantity > i32::MAX as u32
+                {
+                    return Err("duplicate manual order or invalid quantity".into());
+                }
+                if order.order_created_at < action.confirmed_at
+                    || order.terminal_observed_at < order.order_created_at
+                    || order.terminal_observed_at > self.observation_cutoff
+                {
+                    return Err(
+                        "manual order confirmation/submission/terminal time is inconsistent".into(),
+                    );
+                }
+                let mut filled = 0_u32;
+                for fill in &order.fills {
+                    identifier(&fill.trade_id)?;
+                    identifier(&fill.observation_event_id)?;
+                    identifier(&fill.fee_observation_event_id)?;
+                    if fill.observation_sequence == 0
+                        || fill.observation_sequence > i64::MAX as u64
+                        || !observation_events.insert(fill.observation_event_id.as_str())
+                        || !observation_sequences.insert(fill.observation_sequence)
+                    {
+                        return Err(
+                            "manual fill requires a unique durable observation event and sequence"
+                                .into(),
+                        );
+                    }
+                    if fill.fee_observation_sequence == 0
+                        || fill.fee_observation_sequence > i64::MAX as u64
+                        || fill.fee_observed_at < fill.observed_at
+                        || fill.fee_observed_at > self.observation_cutoff
+                        || !fee_observations.insert((
+                            fill.fee_observation_event_id.as_str(),
+                            fill.fee_observation_sequence,
+                        ))
+                    {
+                        return Err("manual finalized fees require their own unique observation within the cutoff".into());
+                    }
+                    if (fill.fee_observation_event_id == fill.observation_event_id)
+                        != (fill.fee_observation_sequence == fill.observation_sequence)
+                        || (fill.fee_observation_event_id == fill.observation_event_id
+                            && fill.fee_observed_at != fill.observed_at)
+                    {
+                        return Err("manual fill and fee observation identities disagree".into());
+                    }
+                    if !trades.insert((fill.trade_date, fill.trade_id.as_str()))
+                        || fill.quantity == 0
+                    {
+                        return Err("duplicate manual trade or zero fill quantity".into());
+                    }
+                    for (id, sequence) in [
+                        (&fill.observation_event_id, fill.observation_sequence),
+                        (
+                            &fill.fee_observation_event_id,
+                            fill.fee_observation_sequence,
+                        ),
+                    ] {
+                        if receipt_ids
+                            .insert(id, (&fill.trade_id, sequence))
+                            .is_some_and(|owner| owner != (&fill.trade_id, sequence))
+                            || receipt_sequences
+                                .insert(sequence, (&fill.trade_id, id))
+                                .is_some_and(|owner| owner != (&fill.trade_id, id))
+                        {
+                            return Err("manual observation identity is reused by a different trade or sequence".into());
+                        }
+                    }
+                    if fill.executed_at.with_timezone(&shanghai).date_naive() != fill.trade_date
+                        || fill.observed_at > self.observation_cutoff
+                        || fill.observed_at < order.order_created_at
+                        || fill.observed_at < action.confirmation_observed_at
+                        || fill.observed_at < fill.executed_at
+                        || fill.executed_at > order.terminal_observed_at
+                    {
+                        return Err("manual fill execution/observation time is inconsistent".into());
+                    }
+                    if i64::from(fill.executed_at.nanosecond())
+                        % fill.timestamp_precision.nanoseconds()
+                        != 0
+                    {
+                        return Err(
+                            "broker timestamp contains digits finer than its declared precision"
+                                .into(),
+                        );
+                    }
+                    let upper = fill
+                        .executed_at
+                        .checked_add_signed(chrono::Duration::nanoseconds(
+                            fill.timestamp_precision.nanoseconds(),
+                        ))
+                        .ok_or("manual execution timestamp overflow")?;
+                    let earliest = order.order_created_at.max(action.confirmation_observed_at);
+                    if fill.executed_at < earliest && earliest >= upper {
+                        return Err("manual fill predates its order or durable confirmation".into());
+                    }
+                    if fill.price <= Decimal::ZERO {
+                        return Err("manual fill requires a positive price".into());
+                    }
+                    fill.gross_amount()?
+                        .checked_add(fill.total_fees()?)
+                        .ok_or("manual fill cash amount overflow")?;
+                    filled = filled
+                        .checked_add(fill.quantity)
+                        .ok_or("manual cumulative fill quantity overflow")?;
+                }
+                if filled > order.quantity
+                    || (order.terminal_status == ManualOrderTerminalStatus::Filled
+                        && filled != order.quantity)
+                    || (order.terminal_status == ManualOrderTerminalStatus::Rejected && filled != 0)
+                    || (matches!(
+                        order.terminal_status,
+                        ManualOrderTerminalStatus::Cancelled | ManualOrderTerminalStatus::Expired
+                    ) && filled == order.quantity)
+                {
+                    return Err("manual terminal status disagrees with cumulative fills".into());
+                }
+            }
+        }
+        Ok(())
+    }
+}
+
+#[derive(Debug, Clone, Copy)]
+pub struct ManualFillObservation<'a> {
+    pub action: &'a ManualExecutionAction,
+    pub order: &'a ManualExecutionOrder,
+    pub fill: &'a ManualExecutionFill,
+}
+
+#[derive(Debug, Clone, PartialEq)]
+pub struct AppliedManualFill {
+    pub gross: FixedMoney,
+    pub fees: FixedMoney,
+    pub cash_delta: FixedMoney,
+    pub quantity_after: u32,
+}
+
+/// One replay owns its immutable trace and progress. Advancing is atomic even
+/// if a later receipt in the same step disagrees with the shadow account.
+pub struct ManualReplayCursor {
+    replay: std::sync::Arc<ManualExecutionReplay>,
+    indices: Vec<(usize, usize, usize)>,
+    cursor: usize,
+    clock: Option<DateTime<Utc>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[serde(rename_all = "camelCase")]
+pub struct ManualReplayApplication {
+    pub action_id: String,
+    pub order_id: String,
+    pub trade_id: String,
+    pub observation_event_id: String,
+    pub observation_sequence: u64,
+    pub observed_at: DateTime<Utc>,
+    pub fee_observation_event_id: String,
+    pub fee_observed_at: DateTime<Utc>,
+    pub executed_at: DateTime<Utc>,
+    pub symbol: String,
+    pub side: OrderSide,
+    pub quantity: u32,
+    pub quantity_after: u32,
+    pub price: String,
+    pub commission: Option<String>,
+    pub stamp_tax: Option<String>,
+    pub transfer_fee: Option<String>,
+    pub source_total_fee: String,
+    pub source_gross_amount: String,
+    pub ledger_gross_amount: String,
+    pub ledger_fees: String,
+    pub cash_delta: String,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub corporate_adjustment: Option<ManualCorporateAdjustment>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[serde(deny_unknown_fields, rename_all = "camelCase")]
+pub struct ManualCorporateAdjustment {
+    pub schema: String,
+    pub observed_at: DateTime<Utc>,
+    pub cash_dividends_enabled: bool,
+    pub dividend_cost_basis_adjustment: bool,
+    #[serde(default, skip_serializing_if = "disabled_flag")]
+    pub dividend_reinvestment: bool,
+    pub actions: Vec<ManualCorporateActionReference>,
+    pub cash_before: String,
+    pub cash_after: String,
+    pub corporate_cash_delta: String,
+    pub positions: BTreeMap<String, ManualCorporatePositionChange>,
+    pub reference_sha256: String,
+    pub replayed_sha256: String,
+}
+
+fn disabled_flag(value: &bool) -> bool { !value }
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[serde(deny_unknown_fields, rename_all = "camelCase")]
+pub struct ManualCorporateActionReference {
+    pub date: NaiveDate,
+    pub symbol: String,
+    pub successor_symbol: Option<String>,
+    pub share_cash: String,
+    pub split_ratio: String,
+    pub successor_ratio: Option<String>,
+    pub successor_cash: Option<String>,
+    pub sha256: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[serde(deny_unknown_fields, rename_all = "camelCase")]
+pub struct ManualCorporatePositionChange {
+    pub quantity_before: u32,
+    pub quantity_after: u32,
+    pub cost_basis_before: String,
+    pub cost_basis_after: String,
+}
+
+impl ManualReplayCursor {
+    pub(crate) fn frozen_source(&self) -> std::sync::Arc<ManualExecutionReplay> {
+        self.replay.clone()
+    }
+
+    pub(crate) fn next_observation(&self) -> Option<ManualFillObservation<'_>> {
+        self.indices.get(self.cursor).map(|&(a, o, f)| ManualFillObservation {
+            action: &self.replay.actions[a], order: &self.replay.actions[a].orders[o],
+            fill: &self.replay.actions[a].orders[o].fills[f],
+        })
+    }
+
+    pub(crate) fn advance_next_projected<F>(
+        &mut self, portfolio: &mut PortfolioState, project: F,
+    ) -> Result<Option<ManualReplayApplication>, String>
+    where F: FnOnce(ManualFillObservation<'_>, &mut PortfolioState) -> Result<(AppliedManualFill, ManualCorporateAdjustment), String> {
+        let Some(observation) = self.next_observation() else { return Ok(None); };
+        let at = observation.fill.observed_at;
+        if at > self.replay.observation_cutoff || self.clock.is_some_and(|clock| at < clock) {
+            return Err("manual projected observation clock violates the frozen trace".into());
+        }
+        let mut next = portfolio.clone();
+        let (applied, adjustment) = project(observation, &mut next)?;
+        let mut application = observation.application(applied)?;
+        application.corporate_adjustment = Some(adjustment);
+        crate::finite_serialization::validate(&application).map_err(|error| error.to_string())?;
+        *portfolio = next;
+        self.cursor += 1;
+        self.clock = Some(at);
+        Ok(Some(application))
+    }
+
+    pub fn new(replay: ManualExecutionReplay) -> Result<Self, String> {
+        Self::from_shared(std::sync::Arc::new(replay))
+    }
+
+    pub fn from_shared(replay: std::sync::Arc<ManualExecutionReplay>) -> Result<Self, String> {
+        replay.validate()?;
+        let mut indices = Vec::new();
+        for (a, action) in replay.actions.iter().enumerate() {
+            for (o, order) in action.orders.iter().enumerate() {
+                for f in 0..order.fills.len() {
+                    indices.push((a, o, f));
+                }
+            }
+        }
+        indices.sort_by_key(|&(a, o, f)| {
+            let fill = &replay.actions[a].orders[o].fills[f];
+            (fill.observed_at, fill.observation_sequence)
+        });
+        Ok(Self {
+            replay,
+            indices,
+            cursor: 0,
+            clock: None,
+        })
+    }
+
+    pub fn next_observation_at(&self) -> Option<DateTime<Utc>> {
+        self.indices
+            .get(self.cursor)
+            .map(|&(a, o, f)| self.replay.actions[a].orders[o].fills[f].observed_at)
+    }
+
+    pub fn applied_count(&self) -> usize {
+        self.cursor
+    }
+
+    pub fn advance(
+        &mut self,
+        at: DateTime<Utc>,
+        portfolio: &mut PortfolioState,
+        data: &DataSet,
+        has_pending_orders: bool,
+    ) -> Result<Vec<ManualReplayApplication>, String> {
+        let end = self.cursor
+            + self.indices[self.cursor..].iter().take_while(|&&(a, o, f)| {
+                self.replay.actions[a].orders[o].fills[f].observed_at <= at
+            }).count();
+        self.advance_through(at, end, portfolio, data, has_pending_orders)
+    }
+
+    /// One receipt at a time lets callbacks observe the intermediate state
+    /// when multiple fills share a timestamp but have distinct durable sequences.
+    pub fn advance_next(
+        &mut self, portfolio: &mut PortfolioState, data: &DataSet, has_pending_orders: bool,
+    ) -> Result<Option<ManualReplayApplication>, String> {
+        let Some(at) = self.next_observation_at() else { return Ok(None); };
+        let mut applications = self.advance_through(at, self.cursor + 1, portfolio, data, has_pending_orders)?;
+        Ok(applications.pop())
+    }
+
+    fn advance_through(
+        &mut self, at: DateTime<Utc>, end: usize, portfolio: &mut PortfolioState,
+        data: &DataSet, has_pending_orders: bool,
+    ) -> Result<Vec<ManualReplayApplication>, String> {
+        if at > self.replay.observation_cutoff {
+            return Err("manual observation clock exceeds the frozen evidence cutoff".into());
+        }
+        if self.clock.is_some_and(|clock| at < clock) {
+            return Err("manual observation clock moved backwards".into());
+        }
+        if end == self.cursor {
+            self.clock = Some(at);
+            return Ok(vec![]);
+        }
+        let mut next = portfolio.clone();
+        let mut applications = Vec::with_capacity(end - self.cursor);
+        for &(a, o, f) in &self.indices[self.cursor..end] {
+            let action = &self.replay.actions[a];
+            let order = &action.orders[o];
+            let fill = &order.fills[f];
+            let applied = ManualFillObservation {
+                action,
+                order,
+                fill,
+            }
+            .apply(&mut next, data, has_pending_orders)?;
+            applications.push(ManualReplayApplication {
+                action_id: action.action_id.clone(),
+                order_id: order.order_id.clone(),
+                trade_id: fill.trade_id.clone(),
+                observation_event_id: fill.observation_event_id.clone(),
+                observation_sequence: fill.observation_sequence,
+                observed_at: fill.observed_at,
+                fee_observation_event_id: fill.fee_observation_event_id.clone(),
+                fee_observed_at: fill.fee_observed_at,
+                executed_at: fill.executed_at,
+                symbol: order.symbol.clone(),
+                side: order.side,
+                quantity: fill.quantity,
+                quantity_after: applied.quantity_after,
+                price: fill.price.to_string(),
+                commission: fill.commission.map(|fee| fee.to_string()),
+                stamp_tax: fill.stamp_tax.map(|fee| fee.to_string()),
+                transfer_fee: fill.transfer_fee.map(|fee| fee.to_string()),
+                source_total_fee: fill.total_fee.to_string(),
+                source_gross_amount: fill.gross_amount()?.to_string(),
+                ledger_gross_amount: applied.gross.to_decimal_string(),
+                ledger_fees: applied.fees.to_decimal_string(),
+                cash_delta: applied.cash_delta.to_decimal_string(),
+                corporate_adjustment: None,
+            });
+        }
+        *portfolio = next;
+        self.cursor = end;
+        self.clock = Some(at);
+        Ok(applications)
+    }
+}
+
+impl ManualFillObservation<'_> {
+    fn application(&self, applied: AppliedManualFill) -> Result<ManualReplayApplication, String> {
+        Ok(ManualReplayApplication {
+            action_id: self.action.action_id.clone(), order_id: self.order.order_id.clone(),
+            trade_id: self.fill.trade_id.clone(), observation_event_id: self.fill.observation_event_id.clone(),
+            observation_sequence: self.fill.observation_sequence, observed_at: self.fill.observed_at,
+            fee_observation_event_id: self.fill.fee_observation_event_id.clone(), fee_observed_at: self.fill.fee_observed_at,
+            executed_at: self.fill.executed_at, symbol: self.order.symbol.clone(), side: self.order.side,
+            quantity: self.fill.quantity, quantity_after: applied.quantity_after, price: self.fill.price.to_string(),
+            commission: self.fill.commission.map(|fee| fee.to_string()), stamp_tax: self.fill.stamp_tax.map(|fee| fee.to_string()),
+            transfer_fee: self.fill.transfer_fee.map(|fee| fee.to_string()), source_total_fee: self.fill.total_fee.to_string(),
+            source_gross_amount: self.fill.gross_amount()?.to_string(), ledger_gross_amount: applied.gross.to_decimal_string(),
+            ledger_fees: applied.fees.to_decimal_string(), cash_delta: applied.cash_delta.to_decimal_string(), corporate_adjustment: None,
+        })
+    }
+
+    pub(crate) fn apply(
+        &self,
+        portfolio: &mut PortfolioState,
+        data: &DataSet,
+        has_pending_orders: bool,
+    ) -> Result<AppliedManualFill, String> {
+        if has_pending_orders {
+            return Err("manual observation conflicts with pending shadow orders".into());
+        }
+        let instrument = data
+            .instrument(&self.order.symbol)
+            .ok_or("manual observation instrument is absent from frozen source data")?;
+        if instrument
+            .dated_market_absence_reason(self.fill.trade_date)
+            .is_some()
+        {
+            return Err("manual execution contradicts the frozen instrument lifecycle".into());
+        }
+        let gross = FixedMoney::from_decimal_str(&self.fill.gross_amount()?.to_string())?;
+        let fees = FixedMoney::from_decimal_str(&self.fill.total_fees()?.to_string())?;
+        let price = self
+            .fill
+            .price
+            .to_f64()
+            .filter(|price| price.is_finite() && *price > 0.)
+            .ok_or("manual execution price cannot be represented for valuation")?;
+        // This is the real observed trade price, not a fabricated quote. The
+        // normal market clock remains responsible for subsequent marks.
+        let cash_delta = portfolio.apply_observed_manual_fill(
+            self.fill.trade_date,
+            &self.order.symbol,
+            self.order.side,
+            self.fill.quantity,
+            price,
+            price,
+            gross,
+            fees,
+        )?;
+        Ok(AppliedManualFill {
+            gross,
+            fees,
+            cash_delta,
+            quantity_after: portfolio
+                .position(&self.order.symbol)
+                .map_or(0, |position| position.quantity),
+        })
+    }
+}
+
+#[cfg(test)]
+mod tests;

crates/fidc-core/src/manual_execution/tests.rs

@@ -0,0 +1,761 @@
+use super::*;
+use serde_json::{Value, json};
+
+fn sample() -> ManualExecutionReplay {
+    let fill = json!({"tradeId":"trade-1","observationEventId":"received-1","observationSequence":1,"tradeDate":"2026-09-14","executedAt":"2026-09-14T01:30:00Z",
+        "feeObservationEventId":"received-1","feeObservationSequence":1,"feeObservedAt":"2026-09-14T01:30:01Z",
+        "observedAt":"2026-09-14T01:30:01Z","timestampPrecision":"second","quantity":100,
+        "price":"10.1234567891","commission":"0.1000001","stampTax":"0","transferFee":"0.02","totalFee":"0.1200001"});
+    let mut input:ManualExecutionReplay=serde_json::from_value(json!({
+        "schema":MANUAL_REPLAY_SCHEMA,"runtimeId":"runtime-1","accountId":"account-1",
+        "sourceContractSha256":"a".repeat(64),"contentSha256":"", "observationCutoff":"2026-09-14T08:00:00Z",
+        "actions":[{"actionId":"action-1","source":"manual_security_trade","auditEventIds":["audit-1"],
+            "confirmedAt":"2026-09-14T01:30:00.500Z","confirmationObservedAt":"2026-09-14T01:30:00.550Z","outcome":"orders_terminal","orders":[{
+                "orderId":"order-1","brokerOrderId":"broker-1","sourceAdapter":"gt-api","symbol":"000001.SZ","side":"Buy","quantity":100,
+                "orderCreatedAt":"2026-09-14T01:30:00.600Z","terminalObservedAt":"2026-09-14T01:30:00.900Z","terminalStatus":"filled",
+                "fills":[fill]
+            }]}]
+    })).unwrap();
+    reseal(&mut input);
+    input
+}
+
+fn reseal(input: &mut ManualExecutionReplay) {
+    input.content_sha256 = input.content_digest().unwrap();
+}
+
+#[test]
+fn a_failed_corporate_projection_does_not_change_the_book_or_receipt_cursor() {
+    let mut cursor = ManualReplayCursor::new(sample()).unwrap();
+    let mut portfolio = PortfolioState::new(10000.);
+    let before = portfolio.financial_replay_identity();
+    let error = cursor.advance_next_projected(&mut portfolio, |_, next| {
+        next.apply_cash_delta(-50.)?;
+        next.position_mut("000001.SZ").buy(NaiveDate::from_ymd_opt(2026, 9, 11).unwrap(), 100, 10.);
+        Err("financial coverage mismatch".into())
+    }).unwrap_err();
+    assert_eq!(error, "financial coverage mismatch");
+    assert_eq!(portfolio.financial_replay_identity(), before);
+    assert_eq!(cursor.applied_count(), 0);
+}
+
+fn delayed_buy_replay() -> ManualExecutionReplay {
+    let mut input = sample();
+    let template = input.actions[0].clone();
+    input.actions.clear();
+    for (index, side, executed, observed, price, fee) in [
+        (
+            0,
+            OrderSide::Buy,
+            "2026-09-14T01:30:00Z",
+            "2026-09-14T01:30:01Z",
+            "20",
+            "0.25",
+        ),
+        (
+            1,
+            OrderSide::Buy,
+            "2026-09-11T06:00:00Z",
+            "2026-09-14T01:30:02Z",
+            "10",
+            "0.75",
+        ),
+        (
+            2,
+            OrderSide::Sell,
+            "2026-09-14T01:31:00Z",
+            "2026-09-14T01:31:01Z",
+            "10",
+            "0.5",
+        ),
+        (
+            3,
+            OrderSide::Sell,
+            "2026-09-14T01:32:00Z",
+            "2026-09-14T01:32:01Z",
+            "10",
+            "0.5",
+        ),
+    ] {
+        let executed: DateTime<Utc> = executed.parse().unwrap();
+        let observed: DateTime<Utc> = observed.parse().unwrap();
+        let mut action = template.clone();
+        action.action_id = format!("action-{index}");
+        action.audit_event_ids = vec![format!("audit-{index}")];
+        action.confirmed_at = executed - chrono::Duration::seconds(2);
+        action.confirmation_observed_at = action.confirmed_at;
+        let order = &mut action.orders[0];
+        order.order_id = format!("order-{index}");
+        order.broker_order_id = Some(format!("broker-{index}"));
+        order.side = side;
+        order.order_created_at = executed - chrono::Duration::seconds(1);
+        order.terminal_observed_at = observed;
+        let fill = &mut order.fills[0];
+        fill.trade_id = format!("trade-{index}");
+        fill.observation_event_id = format!("receipt-{index}");
+        fill.observation_sequence = index + 1;
+        fill.fee_observation_event_id = fill.observation_event_id.clone();
+        fill.fee_observation_sequence = fill.observation_sequence;
+        fill.trade_date = executed
+            .with_timezone(&FixedOffset::east_opt(8 * 3600).unwrap())
+            .date_naive();
+        fill.executed_at = executed;
+        fill.observed_at = observed;
+        fill.fee_observed_at = observed;
+        fill.price = price.parse().unwrap();
+        fill.commission = None;
+        fill.stamp_tax = None;
+        fill.transfer_fee = None;
+        fill.total_fee = fee.parse().unwrap();
+        input.actions.push(action);
+    }
+    reseal(&mut input);
+    input.validate().unwrap();
+    input
+}
+
+#[test]
+fn late_buy_retains_the_earliest_opening_and_latest_buy_dates() {
+    let mut cursor = ManualReplayCursor::new(delayed_buy_replay()).unwrap();
+    let data = identity_data(NaiveDate::from_ymd_opt(2020, 1, 1).unwrap());
+    let mut portfolio = PortfolioState::new(10000.);
+    let applications = cursor
+        .advance(
+            "2026-09-14T01:30:02Z".parse().unwrap(),
+            &mut portfolio,
+            &data,
+            false,
+        )
+        .unwrap();
+    assert_eq!(
+        applications
+            .iter()
+            .map(|row| row.trade_id.as_str())
+            .collect::<Vec<_>>(),
+        ["trade-0", "trade-1"]
+    );
+    let position = portfolio.position("000001.SZ").unwrap();
+    assert_eq!(position.opened_date(), NaiveDate::from_ymd_opt(2026, 9, 11));
+    assert_eq!(
+        position.last_buy_date(),
+        NaiveDate::from_ymd_opt(2026, 9, 14)
+    );
+    assert_eq!(position.quantity, 200);
+    let calendar = crate::TradingCalendar::new(
+        [11, 14, 15, 16, 17, 18]
+            .map(|day| NaiveDate::from_ymd_opt(2026, 9, day).unwrap())
+            .into(),
+    );
+    let evidence = crate::holding_policy::HoldingLifecycleEvidence {
+        has_position: true,
+        opened_date: position.opened_date(),
+        last_buy_date: position.last_buy_date(),
+        last_sell_date: None,
+    };
+    let mut policy = crate::holding_policy::AutomaticTradeProtection {
+        max_holding_days: 1,
+        ..Default::default()
+    };
+    assert!(
+        policy
+            .evaluate(
+                "000001.SZ",
+                NaiveDate::from_ymd_opt(2026, 9, 14).unwrap(),
+                &evidence,
+                &calendar
+            )
+            .unwrap()
+            .max_holding_exit
+    );
+    policy.buy_protection_days = 3;
+    for day in [14, 15, 16, 17] {
+        let permission = policy
+            .evaluate(
+                "000001.SZ",
+                NaiveDate::from_ymd_opt(2026, 9, day).unwrap(),
+                &evidence,
+                &calendar,
+            )
+            .unwrap();
+        assert_eq!(permission.sell_denial, Some("buy_fill_protection"));
+        assert!(!permission.max_holding_exit);
+    }
+    assert!(
+        policy
+            .evaluate(
+                "000001.SZ",
+                NaiveDate::from_ymd_opt(2026, 9, 18).unwrap(),
+                &evidence,
+                &calendar
+            )
+            .unwrap()
+            .max_holding_exit
+    );
+}
+
+#[test]
+fn late_buy_fifo_depletion_preserves_costs_and_cannot_unlock_today_lots() {
+    let mut cursor = ManualReplayCursor::new(delayed_buy_replay()).unwrap();
+    let data = identity_data(NaiveDate::from_ymd_opt(2020, 1, 1).unwrap());
+    let mut portfolio = PortfolioState::new(10000.);
+    let applications = cursor
+        .advance(
+            "2026-09-14T01:31:01Z".parse().unwrap(),
+            &mut portfolio,
+            &data,
+            false,
+        )
+        .unwrap();
+    assert_eq!(applications.len(), 3);
+    let position = portfolio.position("000001.SZ").unwrap();
+    assert_eq!(position.quantity, 100);
+    assert_eq!(position.unrealized_pnl(), -1000.25);
+    assert_eq!(
+        position.sellable_qty(NaiveDate::from_ymd_opt(2026, 9, 14).unwrap()),
+        0
+    );
+    assert_eq!(position.realized_pnl(), -0.75);
+    assert_eq!(portfolio.cash(), 7998.5);
+    assert_eq!(portfolio.external_cash_flow_total(), 0.);
+    assert!(
+        cursor
+            .advance(
+                "2026-09-14T01:32:01Z".parse().unwrap(),
+                &mut portfolio,
+                &data,
+                false
+            )
+            .unwrap_err()
+            .contains("T+1")
+    );
+    assert_eq!(cursor.applied_count(), 3);
+    assert_eq!(portfolio.cash(), 7998.5);
+    assert_eq!(portfolio.position("000001.SZ").unwrap().quantity, 100);
+}
+fn semantic_result(input: &ManualExecutionReplay) -> Result<(), String> {
+    let mut input = input.clone();
+    reseal(&mut input);
+    input.validate()
+}
+
+#[test]
+fn complete_exact_decimal_evidence_allows_later_observation_and_retains_source_digits() {
+    let input = sample();
+    input.validate().unwrap();
+    let fill = &input.actions[0].orders[0].fills[0];
+    assert_eq!(fill.gross_amount().unwrap().to_string(), "1012.3456789100");
+    assert_eq!(fill.total_fees().unwrap().to_string(), "0.1200001");
+    assert_eq!(
+        serde_json::to_value(&input).unwrap()["actions"][0]["orders"][0]["fills"][0]["price"],
+        "10.1234567891"
+    );
+}
+
+#[test]
+fn data_scope_only_contains_actual_filled_securities_and_validates_the_source() {
+    let mut input = sample();
+    let mut rejected = input.actions[0].orders[0].clone();
+    rejected.order_id = "rejected-order".into();
+    rejected.broker_order_id = None;
+    rejected.source_adapter = None;
+    rejected.symbol = "510300.SH".into();
+    rejected.terminal_status = ManualOrderTerminalStatus::Rejected;
+    rejected.fills.clear();
+    input.actions[0].orders.push(rejected);
+    reseal(&mut input);
+    assert_eq!(
+        input.required_data_symbols().unwrap(),
+        BTreeSet::from(["000001.SZ".into()])
+    );
+    input.actions[0].orders[0].symbol = "600000.SH".into();
+    assert!(input.required_data_symbols().is_err());
+}
+
+#[test]
+fn v2_facts_keep_their_encoding_but_cannot_silently_carry_new_runtime_settings() {
+    let mut input = sample();
+    input.schema = "fidc.observed-manual-executions/v2".into();
+    reseal(&mut input);
+    input.validate().unwrap();
+    let old = serde_json::to_value(&input).unwrap();
+    assert!(old.get("positionExposureEvents").is_none());
+    assert!(old.get("legacyPositionExposureBps").is_none());
+    input
+        .legacy_position_exposure_bps
+        .insert(NaiveDate::from_ymd_opt(2026, 9, 14).unwrap(), 5000);
+    reseal(&mut input);
+    assert!(input.validate().is_err());
+    input.schema = MANUAL_REPLAY_SCHEMA.into();
+    reseal(&mut input);
+    input.validate().unwrap();
+}
+
+#[test]
+fn runtime_position_events_cannot_claim_observations_after_the_source_cutoff() {
+    let mut input = sample();
+    input.position_exposure_events.push(serde_json::from_value(json!({
+        "eventId": "position-event", "sequence": 1, "effectiveAt": input.observation_cutoff,
+        "action": "scale", "requestedBps": 5000
+    })).unwrap());
+    semantic_result(&input).unwrap();
+    input.position_exposure_events[0].effective_at += chrono::Duration::nanoseconds(1);
+    assert!(semantic_result(&input).unwrap_err().contains("after the evidence cutoff"));
+}
+
+#[test]
+fn all_required_money_and_binding_fields_reject_missing_or_wrong_values() {
+    let original = serde_json::to_value(sample()).unwrap();
+    for field in ["price", "totalFee"] {
+        let mut missing = original.clone();
+        missing["actions"][0]["orders"][0]["fills"][0]
+            .as_object_mut()
+            .unwrap()
+            .remove(field);
+        assert!(
+            serde_json::from_value::<ManualExecutionReplay>(missing).is_err(),
+            "{field}"
+        );
+        let mut numeric = original.clone();
+        numeric["actions"][0]["orders"][0]["fills"][0][field] = json!(1.1);
+        assert!(
+            serde_json::from_value::<ManualExecutionReplay>(numeric).is_err(),
+            "numeric {field}"
+        );
+    }
+    for mutate in [
+        ("schema", json!("unknown")),
+        ("sourceContractSha256", json!("broken")),
+        ("accountId", json!(" ")),
+    ] {
+        let mut value = original.clone();
+        value[mutate.0] = mutate.1;
+        assert!(
+            semantic_result(&serde_json::from_value::<ManualExecutionReplay>(value).unwrap())
+                .is_err()
+        );
+    }
+}
+
+#[test]
+fn inconsistent_counts_terminals_audits_and_duplicate_facts_are_rejected() {
+    let original = sample();
+    let mut invalid = original.clone();
+    invalid.actions[0].orders[0].quantity = 200;
+    assert!(semantic_result(&invalid).is_err());
+    let mut invalid = original.clone();
+    invalid.actions[0].orders[0].terminal_status = ManualOrderTerminalStatus::Rejected;
+    assert!(semantic_result(&invalid).is_err());
+    let mut invalid = original.clone();
+    invalid.actions[0].audit_event_ids.clear();
+    assert!(semantic_result(&invalid).is_err());
+    let mut invalid = original.clone();
+    invalid.actions.push(invalid.actions[0].clone());
+    assert!(semantic_result(&invalid).is_err());
+    let mut invalid = original.clone();
+    let duplicate = invalid.actions[0].orders[0].fills[0].clone();
+    invalid.actions[0].orders[0].fills.push(duplicate);
+    assert!(semantic_result(&invalid).is_err());
+    let mut invalid = original.clone();
+    invalid.actions[0].orders[0].broker_order_id = None;
+    assert!(semantic_result(&invalid).is_err());
+    invalid.actions[0].orders[0].source_adapter = Some("paper".into());
+    reseal(&mut invalid);
+    invalid.validate().unwrap();
+}
+
+#[test]
+fn source_time_precision_is_not_invented_and_submitted_time_must_fit_the_interval() {
+    let mut input = sample();
+    input.actions[0].orders[0].order_created_at = "2026-09-14T01:30:00.999999Z".parse().unwrap();
+    input.actions[0].orders[0].terminal_observed_at = "2026-09-14T01:30:01.500Z".parse().unwrap();
+    input.actions[0].orders[0].fills[0].observed_at = "2026-09-14T01:30:02Z".parse().unwrap();
+    input.actions[0].orders[0].fills[0].fee_observed_at =
+        input.actions[0].orders[0].fills[0].observed_at;
+    reseal(&mut input);
+    input.validate().unwrap();
+    input.actions[0].orders[0].order_created_at = "2026-09-14T01:30:01Z".parse().unwrap();
+    assert!(semantic_result(&input).is_err());
+    let mut input = sample();
+    input.actions[0].orders[0].fills[0].executed_at = "2026-09-14T01:30:00.800Z".parse().unwrap();
+    assert!(semantic_result(&input).is_err());
+    input.actions[0].orders[0].fills[0].timestamp_precision = ManualTimestampPrecision::Millisecond;
+    reseal(&mut input);
+    input.validate().unwrap();
+    input.actions[0].orders[0].fills[0].executed_at =
+        "2026-09-14T01:30:00.800001Z".parse().unwrap();
+    assert!(semantic_result(&input).is_err());
+}
+
+#[test]
+fn confirmed_no_order_outcome_is_distinct_from_unconfirmed_or_unknown_work() {
+    let mut input = sample();
+    input.actions[0].orders.clear();
+    assert!(semantic_result(&input).is_err());
+    input.actions[0].outcome = ManualActionOutcome::NoOrdersNeeded;
+    reseal(&mut input);
+    input.validate().unwrap();
+    input.actions[0].outcome = ManualActionOutcome::NotExecuted;
+    reseal(&mut input);
+    input.validate().unwrap();
+    let mut value = serde_json::to_value(input).unwrap();
+    value["actions"][0]["outcome"] = json!("result_unknown");
+    assert!(serde_json::from_value::<ManualExecutionReplay>(value).is_err());
+}
+
+#[test]
+fn raw_timezone_and_cutoff_are_required() {
+    let mut value = serde_json::to_value(sample()).unwrap();
+    value["actions"][0]["orders"][0]["fills"][0]["executedAt"] = json!("2026-09-14T09:30:00");
+    assert!(serde_json::from_value::<ManualExecutionReplay>(value).is_err());
+    let mut input = sample();
+    input.observation_cutoff = "2026-09-14T01:30:00.700Z".parse().unwrap();
+    assert!(semantic_result(&input).is_err());
+    let mut value = serde_json::to_value(sample()).unwrap();
+    value["actions"][0]["orders"][0]["fills"][0]["totalFee"] = Value::Null;
+    assert!(serde_json::from_value::<ManualExecutionReplay>(value).is_err());
+}
+
+#[test]
+fn authoritative_total_fee_does_not_require_inventing_unknown_components() {
+    let mut input = sample();
+    let fill = &mut input.actions[0].orders[0].fills[0];
+    fill.commission = None;
+    fill.stamp_tax = None;
+    fill.transfer_fee = None;
+    assert_eq!(
+        fill.total_fees().unwrap(),
+        "0.1200001".parse::<Decimal>().unwrap()
+    );
+    assert!(semantic_result(&input).is_ok());
+    let value = serde_json::to_value(&input).unwrap();
+    assert!(value["actions"][0]["orders"][0]["fills"][0]["commission"].is_null());
+    assert_eq!(
+        value["actions"][0]["orders"][0]["fills"][0]["totalFee"],
+        "0.1200001"
+    );
+    for field in ["commission", "stampTax", "transferFee"] {
+        let mut numeric = value.clone();
+        numeric["actions"][0]["orders"][0]["fills"][0][field] = json!(0.1);
+        assert!(serde_json::from_value::<ManualExecutionReplay>(numeric).is_err());
+    }
+}
+
+#[test]
+fn manual_fee_total_includes_extra_charges_and_rejects_inconsistent_components() {
+    let mut input = sample();
+    input.actions[0].orders[0].fills[0].total_fee = "0.15".parse().unwrap();
+    assert!(semantic_result(&input).is_ok());
+    assert_eq!(
+        input.actions[0].orders[0].fills[0]
+            .total_fees()
+            .unwrap()
+            .to_string(),
+        "0.15"
+    );
+    input.actions[0].orders[0].fills[0].total_fee = "0.1".parse().unwrap();
+    assert!(semantic_result(&input).is_err());
+    input.actions[0].orders[0].fills[0].total_fee = "0.15".parse().unwrap();
+    input.actions[0].orders[0].fills[0].commission = Some(Decimal::NEGATIVE_ONE);
+    assert!(semantic_result(&input).is_err());
+}
+
+#[test]
+fn late_fee_evidence_keeps_the_original_fill_observation_clock() {
+    let data = identity_data(NaiveDate::from_ymd_opt(2020, 1, 1).unwrap());
+    let mut input = sample();
+    let fill = &mut input.actions[0].orders[0].fills[0];
+    let original = fill.observed_at;
+    fill.fee_observation_event_id = "fee-receipt-1".into();
+    fill.fee_observation_sequence = 2;
+    fill.fee_observed_at = original + chrono::Duration::hours(1);
+    let fee_time = fill.fee_observed_at;
+    reseal(&mut input);
+    let mut cursor = ManualReplayCursor::new(input).unwrap();
+    assert_eq!(cursor.next_observation_at(), Some(original));
+    let mut portfolio = PortfolioState::new(10_000.);
+    let result = cursor
+        .advance(original, &mut portfolio, &data, false)
+        .unwrap();
+    assert_eq!(result.len(), 1);
+    assert_eq!(result[0].observed_at, original);
+    assert_eq!(result[0].fee_observed_at, fee_time);
+    assert_eq!(result[0].source_total_fee, "0.1200001");
+    assert!(
+        cursor
+            .advance(fee_time, &mut portfolio, &data, false)
+            .unwrap()
+            .is_empty()
+    );
+}
+
+#[test]
+fn changing_any_external_price_or_identity_invalidates_the_frozen_trace() {
+    let input = sample();
+    let original = input.content_sha256.clone();
+    let mut changed = input.clone();
+    changed.actions[0].orders[0].fills[0].price += Decimal::ONE;
+    assert_ne!(changed.content_digest().unwrap(), original);
+    assert_eq!(
+        changed.validate().unwrap_err(),
+        "manual replay content digest mismatch"
+    );
+    let mut changed = input;
+    changed.account_id = "another-account".into();
+    assert_ne!(changed.content_digest().unwrap(), original);
+    assert!(changed.validate().is_err());
+}
+
+fn identity_data(listed: NaiveDate) -> DataSet {
+    DataSet::from_components(
+        vec![crate::Instrument {
+            symbol: "000001.SZ".into(),
+            name: "test".into(),
+            board: "SZ".into(),
+            round_lot: 100,
+            listed_at: Some(listed),
+            delisted_at: None,
+            status: "active".into(),
+        }],
+        vec![],
+        vec![],
+        vec![],
+        vec![crate::BenchmarkSnapshot {
+            date: listed,
+            benchmark: "000300.SH".into(),
+            open: 100.,
+            close: 100.,
+            prev_close: 100.,
+            volume: 0,
+        }],
+    )
+    .unwrap()
+}
+
+#[test]
+fn confirmed_manual_fill_changes_cash_and_lots_but_not_external_cash_flow_units() {
+    let input = sample();
+    let observations = input.observations().unwrap();
+    let data = identity_data(NaiveDate::from_ymd_opt(2020, 1, 1).unwrap());
+    let mut account = PortfolioState::new(10_000.);
+    let applied = observations[0].apply(&mut account, &data, false).unwrap();
+    assert_eq!(
+        applied.gross,
+        FixedMoney::from_decimal_str("1012.345679").unwrap()
+    );
+    assert_eq!(applied.fees, FixedMoney::from_decimal_str("0.12").unwrap());
+    assert_eq!(account.cash(), 8987.534321);
+    assert_eq!(account.position("000001.SZ").unwrap().quantity, 100);
+    assert_eq!(
+        account
+            .position("000001.SZ")
+            .unwrap()
+            .sellable_qty(input.actions[0].orders[0].fills[0].trade_date),
+        0
+    );
+    assert_eq!(account.external_cash_flow_total(), 0.);
+    assert_eq!(account.starting_cash(), 10_000.);
+}
+
+#[test]
+fn manual_mismatches_are_atomic_and_do_not_borrow_shares_cash_or_override_pending_orders() {
+    let data = identity_data(NaiveDate::from_ymd_opt(2020, 1, 1).unwrap());
+    let input = sample();
+    let observations = input.observations().unwrap();
+    let mut poor = PortfolioState::new(10.);
+    assert!(observations[0].apply(&mut poor, &data, false).is_err());
+    assert_eq!(poor.cash(), 10.);
+    assert!(poor.positions().is_empty());
+    let mut account = PortfolioState::new(10_000.);
+    assert!(observations[0].apply(&mut account, &data, true).is_err());
+    assert_eq!(account.cash(), 10_000.);
+    assert!(account.positions().is_empty());
+    observations[0].apply(&mut account, &data, false).unwrap();
+    let before = account.cash();
+    let mut sell = input.clone();
+    sell.actions[0].orders[0].side = OrderSide::Sell;
+    reseal(&mut sell);
+    assert!(
+        sell.observations().unwrap()[0]
+            .apply(&mut account, &data, false)
+            .unwrap_err()
+            .contains("T+1")
+    );
+    assert_eq!(account.cash(), before);
+    assert_eq!(account.position("000001.SZ").unwrap().quantity, 100);
+    let unlisted = identity_data(NaiveDate::from_ymd_opt(2027, 1, 1).unwrap());
+    assert!(
+        observations[0]
+            .apply(&mut account, &unlisted, false)
+            .unwrap_err()
+            .contains("lifecycle")
+    );
+    assert_eq!(account.cash(), before);
+}
+
+#[test]
+fn the_next_day_manual_sale_keeps_the_actual_quantity_and_fee_contract() {
+    let data = identity_data(NaiveDate::from_ymd_opt(2020, 1, 1).unwrap());
+    let input = sample();
+    let mut account = PortfolioState::new(10_000.);
+    input.observations().unwrap()[0]
+        .apply(&mut account, &data, false)
+        .unwrap();
+    let mut sell = input.clone();
+    let order = &mut sell.actions[0].orders[0];
+    order.side = OrderSide::Sell;
+    order.order_created_at += chrono::Duration::days(1);
+    order.terminal_observed_at += chrono::Duration::days(1);
+    order.fills[0].trade_date = order.fills[0].trade_date.succ_opt().unwrap();
+    order.fills[0].executed_at += chrono::Duration::days(1);
+    order.fills[0].observed_at += chrono::Duration::days(1);
+    order.fills[0].fee_observed_at += chrono::Duration::days(1);
+    sell.observation_cutoff += chrono::Duration::days(1);
+    reseal(&mut sell);
+    let applied = sell.observations().unwrap()[0]
+        .apply(&mut account, &data, false)
+        .unwrap();
+    assert_eq!(applied.quantity_after, 0);
+    assert_eq!(account.cash(), 9999.76);
+    assert_eq!(account.external_cash_flow_total(), 0.);
+}
+
+#[test]
+fn observations_follow_durable_receipt_order_and_not_input_array_order() {
+    let mut input = sample();
+    let mut second = input.actions[0].orders[0].fills[0].clone();
+    second.trade_id = "trade-2".into();
+    second.observation_event_id = "received-2".into();
+    second.observation_sequence = 2;
+    second.fee_observation_event_id = "received-2".into();
+    second.fee_observation_sequence = 2;
+    input.actions[0].orders[0].quantity = 200;
+    input.actions[0].orders[0].fills.insert(0, second);
+    reseal(&mut input);
+    assert_eq!(
+        input
+            .observations()
+            .unwrap()
+            .iter()
+            .map(|row| row.fill.observation_sequence)
+            .collect::<Vec<_>>(),
+        vec![1, 2]
+    );
+    let mut invalid = input.clone();
+    invalid.actions[0].orders[0].fills[0].observation_sequence = 1;
+    assert!(
+        semantic_result(&invalid)
+            .unwrap_err()
+            .contains("observation")
+    );
+    let mut invalid = input;
+    invalid.actions[0].orders[0].fills[0].observation_event_id = "received-1".into();
+    assert!(
+        semantic_result(&invalid)
+            .unwrap_err()
+            .contains("observation")
+    );
+}
+
+#[test]
+fn partial_cancel_is_valid_but_full_fill_cannot_be_reported_as_cancelled() {
+    let mut input = sample();
+    input.actions[0].orders[0].quantity = 200;
+    input.actions[0].orders[0].terminal_status = ManualOrderTerminalStatus::Cancelled;
+    semantic_result(&input).unwrap();
+    input.actions[0].orders[0].quantity = 100;
+    assert!(
+        semantic_result(&input)
+            .unwrap_err()
+            .contains("terminal status")
+    );
+}
+
+#[test]
+fn cursor_waits_for_observation_and_never_reapplies_or_rewinds() {
+    let input = sample();
+    let at = input.actions[0].orders[0].fills[0].observed_at;
+    let mut replay = ManualReplayCursor::new(input).unwrap();
+    let data = identity_data(NaiveDate::from_ymd_opt(2020, 1, 1).unwrap());
+    let mut account = PortfolioState::new(10_000.);
+    assert_eq!(replay.next_observation_at(), Some(at));
+    assert!(
+        replay
+            .advance(
+                at - chrono::Duration::milliseconds(1),
+                &mut account,
+                &data,
+                false
+            )
+            .unwrap()
+            .is_empty()
+    );
+    assert_eq!(account.cash(), 10_000.);
+    let records = replay.advance(at, &mut account, &data, false).unwrap();
+    assert_eq!(records.len(), 1);
+    assert_eq!(records[0].cash_delta, "-1012.465679");
+    assert_eq!(replay.applied_count(), 1);
+    assert_eq!(replay.next_observation_at(), None);
+    let cash = account.cash();
+    assert!(
+        replay
+            .advance(at, &mut account, &data, false)
+            .unwrap()
+            .is_empty()
+    );
+    assert_eq!(account.cash(), cash);
+    assert!(
+        replay
+            .advance(
+                at - chrono::Duration::seconds(1),
+                &mut account,
+                &data,
+                false
+            )
+            .unwrap_err()
+            .contains("backwards")
+    );
+}
+
+#[test]
+fn failed_multi_receipt_advance_keeps_both_progress_and_portfolio_unchanged() {
+    let mut input = sample();
+    let mut next = input.actions[0].orders[0].fills[0].clone();
+    next.trade_id = "trade-2".into();
+    next.observation_event_id = "received-2".into();
+    next.observation_sequence = 2;
+    next.fee_observation_event_id = "received-2".into();
+    next.fee_observation_sequence = 2;
+    input.actions[0].orders[0].quantity = 200;
+    input.actions[0].orders[0].fills.push(next);
+    reseal(&mut input);
+    let at = input.actions[0].orders[0].fills[0].observed_at;
+    let mut replay = ManualReplayCursor::new(input).unwrap();
+    let data = identity_data(NaiveDate::from_ymd_opt(2020, 1, 1).unwrap());
+    let mut account = PortfolioState::new(1_500.);
+    assert!(replay.advance(at, &mut account, &data, false).is_err());
+    assert_eq!(account.cash(), 1_500.);
+    assert!(account.positions().is_empty());
+    assert_eq!(replay.applied_count(), 0);
+    assert_eq!(replay.next_observation_at(), Some(at));
+}
+
+#[test]
+fn fixed_money_decimal_text_preserves_micro_units_without_float_conversion() {
+    for text in [
+        "0",
+        "100",
+        "-100",
+        "0.000001",
+        "-0.000001",
+        "12345678901234567890123456.123456",
+    ] {
+        assert_eq!(
+            FixedMoney::from_decimal_str(text)
+                .unwrap()
+                .to_decimal_string(),
+            text
+        );
+    }
+    let min = FixedMoney::from_raw(i128::MIN);
+    assert!(min.to_decimal_string().starts_with('-'));
+}

crates/fidc-core/src/market_event_context.rs

@@ -0,0 +1,257 @@
+//! Complete published daily cross sections, independent of trading candidates and accounts.
+use chrono::NaiveDate;
+use serde::{Deserialize, Serialize};
+use std::collections::{BTreeMap, BTreeSet};
+
+pub const CONTRACT: &str = "fidc_market_event_context_v1";
+pub fn implementation_sha256() -> String {
+    use sha2::{Digest, Sha256};
+    format!("{:x}", Sha256::digest(include_bytes!("market_event_context.rs")))
+}
+pub const COMMON_FIELDS: &[&str] = &[
+    "market_breadth", "market_return", "market_limit_up_count", "market_limit_down_count",
+    "market_limit_up_rate", "market_broken_limit_rate", "market_high_board", "market_profit_effect",
+];
+pub const INDUSTRY_FIELDS: &[&str] = &[
+    "industry_close", "industry_return_20", "industry_breadth", "industry_rank", "industry_size",
+];
+
+#[derive(Clone, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct Observation {
+    pub symbol: String,
+    pub industry: Option<String>,
+    pub close: Option<f64>,
+    pub high: Option<f64>,
+    pub previous_close: Option<f64>,
+    pub upper_limit: Option<f64>,
+    pub lower_limit: Option<f64>,
+    pub no_limit: Option<bool>,
+    pub paused: Option<bool>,
+}
+
+#[derive(Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct Day {
+    pub date: NaiveDate,
+    pub universe: Vec<String>,
+    pub rows: Vec<Observation>,
+}
+
+#[derive(Default, Clone, Deserialize, Serialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct State {
+    pub last_date: Option<NaiveDate>,
+    pub streaks: BTreeMap<String, Option<u32>>,
+    pub limit_ups: BTreeSet<String>,
+    pub industry_history: BTreeMap<String, Vec<f64>>,
+}
+
+#[derive(Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct Request {
+    pub days: Vec<Day>,
+    #[serde(default)]
+    pub previous: State,
+}
+
+#[derive(Serialize)]
+pub struct OutputDay {
+    pub date: NaiveDate,
+    pub common: BTreeMap<String, Option<f64>>,
+    pub industries: BTreeMap<String, BTreeMap<String, Option<f64>>>,
+    pub members: BTreeMap<String, Option<String>>,
+    pub securities: usize,
+    pub active: usize,
+    pub paused: usize,
+    pub no_limit: usize,
+    pub profit_effect_members: Vec<String>,
+    pub profit_effect_missing: Vec<String>,
+    pub industry_missing: Vec<String>,
+}
+
+#[derive(Serialize)]
+pub struct Output {
+    pub contract: &'static str,
+    pub days: Vec<OutputDay>,
+    pub state: State,
+}
+
+fn positive(value: Option<f64>, symbol: &str, field: &str) -> Result<f64, String> {
+    value.filter(|v| v.is_finite() && *v > 0.0)
+        .ok_or_else(|| format!("market_event_input_invalid: {symbol} {field}"))
+}
+fn average(values: impl Iterator<Item = f64>, n: usize) -> f64 {
+    values.map(|v| v / n as f64).sum()
+}
+
+pub fn aggregate(request: Request) -> Result<Output, String> {
+    let mut state = request.previous;
+    if request.days.is_empty() || request.days.len() > 30
+        || request.days.iter().map(|d| d.rows.len()).sum::<usize>() > 60_000
+        || state.streaks.len() > 20_000 || state.limit_ups.len() > 20_000
+        || state.industry_history.len() > 2000
+        || state.industry_history.values().any(|v| v.is_empty() || v.len() > 21
+            || v.iter().any(|x| !x.is_finite() || *x <= 0.0))
+        || state.last_date.is_none() && (!state.streaks.is_empty() || !state.limit_ups.is_empty() || !state.industry_history.is_empty()) {
+        return Err("market_event_history_budget_or_state_invalid".into());
+    }
+    let mut output = Vec::new();
+    for day in request.days {
+        if state.last_date.is_some_and(|d| d >= day.date)
+            || day.universe.is_empty() || day.universe.len() > 20_000
+            || day.universe.iter().collect::<BTreeSet<_>>().len() != day.universe.len()
+            || day.rows.len() != day.universe.len()
+            || day.rows.iter().map(|r| &r.symbol).collect::<BTreeSet<_>>() != day.universe.iter().collect::<BTreeSet<_>>() {
+            return Err(format!("market_event_incomplete_cross_section: {}", day.date));
+        }
+        let mut returns = BTreeMap::new();
+        let mut groups: BTreeMap<String, Vec<f64>> = BTreeMap::new();
+        let mut members = BTreeMap::new();
+        let mut streaks = BTreeMap::new();
+        let mut ups = BTreeSet::new();
+        let mut downs = 0; let mut touched = 0; let mut broken = 0; let mut paused = 0; let mut unlimited = 0;
+        for row in &day.rows {
+            let industry = row.industry.clone().filter(|s| !s.trim().is_empty());
+            members.insert(row.symbol.clone(), industry.clone());
+            match row.paused {
+                Some(true) => {
+                    paused += 1;
+                    streaks.insert(row.symbol.clone(), state.streaks.get(&row.symbol).copied().flatten());
+                    continue;
+                },
+                Some(false) => {},
+                None => return Err(format!("market_event_pause_state_missing: {} {}", day.date, row.symbol)),
+            }
+            let c = positive(row.close, &row.symbol, "close")?;
+            let h = positive(row.high, &row.symbol, "high")?;
+            let p = positive(row.previous_close, &row.symbol, "previous_close")?;
+            if h + 1e-8 < c { return Err(format!("market_event_high_below_close: {}", row.symbol)); }
+            let change = c / p - 1.0;
+            returns.insert(row.symbol.clone(), change);
+            if let Some(industry) = industry { groups.entry(industry).or_default().push(change); }
+            let is_up = match row.no_limit {
+                Some(true) => { unlimited += 1; false },
+                Some(false) => {
+                    let upper = positive(row.upper_limit, &row.symbol, "upper_limit")?;
+                    let lower = positive(row.lower_limit, &row.symbol, "lower_limit")?;
+                    if lower >= upper || c > upper + 1e-8 || c < lower - 1e-8 {
+                        return Err(format!("market_event_limit_bounds_invalid: {} {}", day.date, row.symbol));
+                    }
+                    let at_up = (c - upper).abs() <= 1e-8;
+                    if (c - lower).abs() <= 1e-8 { downs += 1; }
+                    if h >= upper - 1e-8 { touched += 1; if !at_up { broken += 1; } }
+                    at_up
+                },
+                None => return Err(format!("market_event_limit_policy_missing: {}", row.symbol)),
+            };
+            if is_up {
+                ups.insert(row.symbol.clone());
+                // The first observed limit-up may already be a continuing streak.
+                streaks.insert(row.symbol.clone(), state.streaks.get(&row.symbol).copied().flatten().map(|v| v + 1));
+            } else { streaks.insert(row.symbol.clone(), Some(0)); }
+        }
+        let active = returns.len();
+        if active == 0 { return Err(format!("market_event_no_active_market: {}", day.date)); }
+        let previous_ups = state.limit_ups.iter().cloned().collect::<Vec<_>>();
+        let profit_missing = previous_ups.iter().filter(|s| !returns.contains_key(*s)).cloned().collect::<Vec<_>>();
+        let profit = if previous_ups.is_empty() || !profit_missing.is_empty() { None }
+            else { Some(average(previous_ups.iter().map(|s| returns[s]), previous_ups.len())) };
+        let board = if ups.iter().any(|s| streaks[s].is_none()) { None }
+            else { Some(ups.iter().map(|s| streaks[s].unwrap()).max().unwrap_or(0) as f64) };
+        let common = BTreeMap::from([
+            ("market_breadth".into(), Some(returns.values().filter(|v| **v > 0.0).count() as f64 / active as f64)),
+            ("market_return".into(), Some(average(returns.values().copied(), active))),
+            ("market_limit_up_count".into(), Some(ups.len() as f64)),
+            ("market_limit_down_count".into(), Some(downs as f64)),
+            ("market_limit_up_rate".into(), (touched > 0).then(|| ups.len() as f64 / touched as f64)),
+            ("market_broken_limit_rate".into(), (touched > 0).then(|| broken as f64 / touched as f64)),
+            ("market_high_board".into(), board),
+            ("market_profit_effect".into(), profit),
+        ]);
+        let mut industries = BTreeMap::new();
+        // A disappeared group breaks its continuous history; no stale NAV is carried forward.
+        state.industry_history.retain(|key, _| groups.contains_key(key));
+        for (industry, values) in groups {
+            let history = state.industry_history.entry(industry.clone()).or_default();
+            let nav = history.last().copied().unwrap_or(1.0) * (1.0 + average(values.iter().copied(), values.len()));
+            history.push(nav);
+            if history.len() > 21 { history.remove(0); }
+            let momentum = (history.len() == 21).then(|| nav / history[0] - 1.0);
+            industries.insert(industry, BTreeMap::from([
+                ("industry_close".into(), Some(nav)), ("industry_return_20".into(), momentum),
+                ("industry_breadth".into(), Some(values.iter().filter(|v| **v > 0.0).count() as f64 / values.len() as f64)),
+            ]));
+        }
+        let universe = industries.keys().cloned().collect::<Vec<_>>();
+        let known = industries.values().all(|g| g["industry_return_20"].is_some());
+        let ranks = if known && !universe.is_empty() {
+            crate::factor_cross_section::evaluate("RANK", &universe, &industries.iter().map(|(s,g)|
+                crate::factor_cross_section::Observation {symbol:s.clone(), value:g["industry_return_20"].unwrap(),industry:None,market_cap:None}).collect::<Vec<_>>(),0.0)?
+                .into_iter().map(|r|(r.symbol,r.value)).collect::<BTreeMap<_,_>>()
+        } else { BTreeMap::new() };
+        for (name, fields) in &mut industries {
+            fields.insert("industry_rank".into(), ranks.get(name).copied());
+            fields.insert("industry_size".into(), Some(universe.len() as f64));
+        }
+        let industry_missing=members.iter().filter(|(_,group)|group.is_none()).map(|(s,_)|s.clone()).collect::<Vec<_>>();
+        if !industry_missing.is_empty() {
+            // An unclassified member may belong to any group; never silently shrink a group.
+            state.industry_history.clear();
+            for fields in industries.values_mut() { for value in fields.values_mut() { *value=None; } }
+        }
+        output.push(OutputDay { date:day.date, common, industries, members, securities:day.rows.len(), active, paused,
+            no_limit:unlimited, profit_effect_members:previous_ups, profit_effect_missing:profit_missing, industry_missing });
+        state.last_date = Some(day.date); state.streaks = streaks; state.limit_ups = ups;
+    }
+    Ok(Output {contract:CONTRACT, days:output, state})
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    fn day(n: u32, up: bool) -> Day {
+        Day {date:NaiveDate::from_ymd_opt(2026,9,n).unwrap(), universe:vec!["A".into(),"B".into()], rows:vec![
+            Observation{symbol:"A".into(),industry:Some("I".into()),close:Some(if up {11.0}else{10.0}),high:Some(11.0),previous_close:Some(10.0),upper_limit:Some(11.0),lower_limit:Some(9.0),no_limit:Some(false),paused:Some(false)},
+            Observation{symbol:"B".into(),industry:Some("J".into()),close:Some(9.0),high:Some(10.0),previous_close:Some(10.0),upper_limit:Some(11.0),lower_limit:Some(9.0),no_limit:Some(false),paused:Some(false)}]}
+    }
+    #[test]
+    fn formulas_use_real_limits_and_full_denominators() {
+        let r=aggregate(Request{days:vec![day(1,false),day(2,true),day(3,true)],previous:State::default()}).unwrap();
+        let d=&r.days[1];
+        assert_eq!(d.common["market_breadth"],Some(0.5));
+        assert_eq!(d.common["market_limit_down_count"],Some(1.0));
+        assert_eq!(d.common["market_limit_up_rate"],Some(1.0));
+        assert_eq!(r.days[0].common["market_limit_up_rate"],Some(0.0));
+        assert_eq!(r.days[0].common["market_broken_limit_rate"],Some(1.0));
+        assert_eq!(r.days[2].common["market_high_board"],Some(2.0));
+        assert!((r.days[2].common["market_profit_effect"].unwrap()-0.1).abs()<1e-12);
+        assert_eq!(r.days[0].common["market_profit_effect"],None);
+    }
+    #[test]
+    fn missing_duplicate_and_unproven_limit_states_fail() {
+        let mut d=day(1,true);d.rows.pop();assert!(aggregate(Request{days:vec![d],previous:State::default()}).is_err());
+        let mut d=day(1,true);d.rows[0].upper_limit=None;assert!(aggregate(Request{days:vec![d],previous:State::default()}).is_err());
+        let mut d=day(1,true);d.rows[0].no_limit=Some(true);d.rows[0].upper_limit=None;
+        assert_eq!(aggregate(Request{days:vec![d],previous:State::default()}).unwrap().days[0].no_limit,1);
+    }
+    #[test]
+    fn chunking_and_future_append_preserve_history() {
+        let first=aggregate(Request{days:vec![day(1,false),day(2,true)],previous:State::default()}).unwrap();
+        let next=aggregate(Request{days:vec![day(3,true)],previous:first.state}).unwrap();
+        let full=aggregate(Request{days:vec![day(1,false),day(2,true),day(3,true)],previous:State::default()}).unwrap();
+        assert_eq!(serde_json::to_value(&first.days).unwrap(),serde_json::to_value(&full.days[..2]).unwrap());
+        assert_eq!(serde_json::to_value(&next.days).unwrap(),serde_json::to_value(&full.days[2..]).unwrap());
+        let unknown=aggregate(Request{days:vec![day(1,true)],previous:State::default()}).unwrap();
+        assert_eq!(unknown.days[0].common["market_high_board"],None);
+    }
+    #[test]
+    fn missing_industry_does_not_invent_groups_or_disable_independent_market_facts() {
+        let mut missing=day(2,true);missing.rows[0].industry=None;
+        let r=aggregate(Request{days:vec![day(1,false),missing,day(3,true)],previous:State::default()}).unwrap();
+        assert_eq!(r.days[1].common["market_breadth"],Some(0.5));
+        assert_eq!(r.days[1].industry_missing,vec!["A"]);
+        assert!(r.days[1].industries.values().flat_map(|g|g.values()).all(Option::is_none));
+        assert_eq!(r.days[2].industries["I"]["industry_return_20"],None);
+    }
+}

crates/fidc-core/src/metrics.rs

@@ -9,7 +9,28 @@ use crate::portfolio::HoldingSummary;
 
 const TRADING_DAYS_PER_YEAR: f64 = 252.0;
 const MONTHS_PER_YEAR: f64 = 12.0;
-const DEFAULT_RISK_FREE_RATE: f64 = 0.022;
+
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct RiskFreeRateObservation {
+    pub date: NaiveDate,
+    pub source_date: NaiveDate,
+    pub annual_rate: f64,
+    pub daily_rate: f64,
+}
+
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct RiskFreeRateContract {
+    pub version: String,
+    pub source: String,
+    pub tenor: String,
+    pub periods_per_year: f64,
+    pub max_staleness_days: usize,
+    pub observed_max_staleness_days: usize,
+    pub sha256: String,
+    pub observations: Vec<RiskFreeRateObservation>,
+}
 
 #[derive(Debug, Clone, Default, Serialize, Deserialize)]
 pub struct BacktestMetrics {
@@ -29,6 +50,7 @@ pub struct BacktestMetrics {
     pub max_drawdown_duration_days: usize,
     pub total_trade_days: usize,
     pub sortino: f64,
+    pub downside_risk: f64,
     pub information_ratio: f64,
     pub tracking_error: f64,
     pub volatility: f64,
@@ -55,6 +77,13 @@ pub struct BacktestMetrics {
     pub excess_win_rate: f64,
     pub monthly_sharpe: f64,
     pub monthly_volatility: f64,
+    pub risk_free_rate_contract_version: String,
+    pub risk_free_rate_source: String,
+    pub risk_free_rate_tenor: String,
+    pub risk_free_rate_observation_count: usize,
+    pub risk_free_rate_max_staleness_days: usize,
+    pub risk_free_rate_observed_max_staleness_days: usize,
+    pub risk_free_rate_sha256: String,
 }
 
 pub fn compute_backtest_metrics(
@@ -63,30 +92,32 @@ pub fn compute_backtest_metrics(
     daily_holdings: &[HoldingSummary],
     account_events: &[AccountEvent],
     initial_cash: f64,
-) -> BacktestMetrics {
+    risk_free_contract: Option<&RiskFreeRateContract>,
+) -> Result<BacktestMetrics, String> {
+    compute_backtest_metrics_with_manual(equity_curve, fills, &[], daily_holdings, account_events, initial_cash, risk_free_contract)
+}
+
+pub fn compute_backtest_metrics_with_manual(
+    equity_curve: &[DailyEquityPoint], fills: &[FillEvent],
+    manual_executions: &[crate::manual_execution::ManualReplayApplication],
+    daily_holdings: &[HoldingSummary], account_events: &[AccountEvent], initial_cash: f64,
+    risk_free_contract: Option<&RiskFreeRateContract>,
+) -> Result<BacktestMetrics, String> {
     let Some(first_point) = equity_curve.first() else {
-        return BacktestMetrics {
-            risk_free_rate: DEFAULT_RISK_FREE_RATE,
+        return Ok(BacktestMetrics {
             initial_cash,
             ..BacktestMetrics::default()
-        };
+        });
     };
     let Some(last_point) = equity_curve.last() else {
-        return BacktestMetrics {
-            risk_free_rate: DEFAULT_RISK_FREE_RATE,
+        return Ok(BacktestMetrics {
             initial_cash,
             ..BacktestMetrics::default()
-        };
+        });
     };
 
     let trade_days = equity_curve.len();
-    let benchmark_start = if first_point.benchmark_prev_close.is_finite()
-        && first_point.benchmark_prev_close > f64::EPSILON
-    {
-        first_point.benchmark_prev_close
-    } else {
-        first_point.benchmark_close
-    };
+    let benchmark_start = first_point.benchmark_reference_close();
     let explicit_unit_nav = equity_curve.iter().any(|point| {
         point.external_cash_flow.abs() > f64::EPSILON
             || (point.unit_nav.is_finite()
@@ -122,6 +153,7 @@ pub fn compute_backtest_metrics(
         .zip(benchmark_returns.iter())
         .map(|(lhs, rhs)| lhs - rhs)
         .collect::<Vec<_>>();
+    let zero_risk_free_rates = vec![0.0; excess_returns.len()];
 
     let benchmark_net_value = if benchmark_start.abs() < f64::EPSILON {
         1.0
@@ -140,16 +172,28 @@ pub fn compute_backtest_metrics(
     let annual_return = annualize_return(total_return, trade_days);
     let excess_annual_return = annualize_return(excess_cumulative_return, trade_days);
 
-    let risk_free_rate = DEFAULT_RISK_FREE_RATE;
-    let daily_rf = risk_free_rate / TRADING_DAYS_PER_YEAR;
-    let sharpe = annualized_sharpe(&returns, daily_rf, TRADING_DAYS_PER_YEAR);
-    let sortino = annualized_sortino(&returns, daily_rf, TRADING_DAYS_PER_YEAR);
-    let information_ratio = annualized_sharpe(&excess_returns, 0.0, TRADING_DAYS_PER_YEAR);
+    let (daily_risk_free_rates, risk_free_metadata) =
+        aligned_daily_risk_free_rates(equity_curve, risk_free_contract)?;
+    let risk_free_rate =
+        effective_annual_risk_free_rate(&daily_risk_free_rates, TRADING_DAYS_PER_YEAR);
+    let sharpe = annualized_sharpe(&returns, &daily_risk_free_rates, TRADING_DAYS_PER_YEAR);
+    let sortino = annualized_sortino(&returns, &daily_risk_free_rates, TRADING_DAYS_PER_YEAR);
+    let downside_risk =
+        annualized_downside_risk(&returns, &daily_risk_free_rates, TRADING_DAYS_PER_YEAR);
+    let information_ratio = annualized_sharpe(
+        &excess_returns,
+        &zero_risk_free_rates,
+        TRADING_DAYS_PER_YEAR,
+    );
     let tracking_error = annualized_std(&excess_returns, TRADING_DAYS_PER_YEAR);
     let volatility = annualized_std(&returns, TRADING_DAYS_PER_YEAR);
     let excess_volatility = annualized_std(&excess_returns, TRADING_DAYS_PER_YEAR);
-    let excess_sharpe = annualized_sharpe(&excess_returns, 0.0, TRADING_DAYS_PER_YEAR);
-    let (alpha, beta) = alpha_beta(&returns, &benchmark_returns, daily_rf);
+    let excess_sharpe = annualized_sharpe(
+        &excess_returns,
+        &zero_risk_free_rates,
+        TRADING_DAYS_PER_YEAR,
+    );
+    let (alpha, beta) = alpha_beta(&returns, &benchmark_returns, &daily_risk_free_rates);
 
     let equity_nav = portfolio_nav;
     let benchmark_nav_series = equity_curve
@@ -178,6 +222,8 @@ pub fn compute_backtest_metrics(
         .zip(monthly_benchmark_returns.iter())
         .map(|(lhs, rhs)| lhs - rhs)
         .collect::<Vec<_>>();
+    let monthly_risk_free_returns =
+        group_monthly_risk_free_returns(equity_curve, &daily_risk_free_rates);
     let monthly_excess_win_rate = ratio(
         monthly_excess_returns
             .iter()
@@ -187,17 +233,25 @@ pub fn compute_backtest_metrics(
     );
     let monthly_sharpe = annualized_sharpe(
         &monthly_portfolio_returns,
-        risk_free_rate / MONTHS_PER_YEAR,
+        &monthly_risk_free_returns,
         MONTHS_PER_YEAR,
     );
     let monthly_volatility = annualized_std(&monthly_portfolio_returns, MONTHS_PER_YEAR);
 
-    let turnover_by_date = fills
+    let mut turnover_by_date = fills
         .iter()
         .fold(BTreeMap::<NaiveDate, f64>::new(), |mut acc, fill| {
             *acc.entry(fill.date).or_default() += fill.gross_amount.abs();
             acc
         });
+    for execution in manual_executions {
+        use rust_decimal::prelude::ToPrimitive;
+        let gross = execution.ledger_gross_amount.parse::<rust_decimal::Decimal>()
+            .ok().and_then(|value| value.to_f64()).filter(|value| value.is_finite() && *value >= 0.)
+            .ok_or("manual turnover requires its validated ledger gross amount")?;
+        let date = execution.observed_at.with_timezone(&chrono::FixedOffset::east_opt(8 * 3600).unwrap()).date_naive();
+        *turnover_by_date.entry(date).or_default() += gross;
+    }
     let equity_by_date = equity_curve
         .iter()
         .map(|point| (point.date, point.total_equity))
@@ -239,7 +293,7 @@ pub fn compute_backtest_metrics(
 
     let total_trade_days = equity_by_date.len();
 
-    BacktestMetrics {
+    Ok(BacktestMetrics {
         total_return,
         annual_return,
         sharpe,
@@ -256,6 +310,7 @@ pub fn compute_backtest_metrics(
         max_drawdown_duration_days,
         total_trade_days,
         sortino,
+        downside_risk,
         information_ratio,
         tracking_error,
         volatility,
@@ -285,7 +340,14 @@ pub fn compute_backtest_metrics(
         excess_win_rate,
         monthly_sharpe,
         monthly_volatility,
-    }
+        risk_free_rate_contract_version: risk_free_metadata.version,
+        risk_free_rate_source: risk_free_metadata.source,
+        risk_free_rate_tenor: risk_free_metadata.tenor,
+        risk_free_rate_observation_count: daily_risk_free_rates.len(),
+        risk_free_rate_max_staleness_days: risk_free_metadata.max_staleness_days,
+        risk_free_rate_observed_max_staleness_days: risk_free_metadata.observed_max_staleness_days,
+        risk_free_rate_sha256: risk_free_metadata.sha256,
+    })
 }
 
 fn point_nav(point: &DailyEquityPoint, initial_cash: f64) -> f64 {
@@ -316,13 +378,106 @@ fn annualize_return(total_return: f64, periods: usize) -> f64 {
     base.powf(TRADING_DAYS_PER_YEAR / periods) - 1.0
 }
 
-fn annualized_sharpe(returns: &[f64], daily_rf: f64, periods_per_year: f64) -> f64 {
-    if returns.len() < 2 {
+fn aligned_daily_risk_free_rates(
+    equity_curve: &[DailyEquityPoint],
+    contract: Option<&RiskFreeRateContract>,
+) -> Result<(Vec<f64>, RiskFreeRateContract), String> {
+    let Some(contract) = contract else {
+        return Ok((
+            vec![0.0; equity_curve.len()],
+            RiskFreeRateContract {
+                version: "not-configured".to_string(),
+                source: "not-configured".to_string(),
+                tenor: "NONE".to_string(),
+                periods_per_year: TRADING_DAYS_PER_YEAR,
+                ..RiskFreeRateContract::default()
+            },
+        ));
+    };
+    if contract.version.trim().is_empty()
+        || contract.source.trim().is_empty()
+        || contract.tenor.trim().is_empty()
+        || contract.sha256.len() != 64
+    {
+        return Err("risk-free rate contract metadata is incomplete".to_string());
+    }
+    if contract.observations.len() != equity_curve.len() {
+        return Err(format!(
+            "risk-free rate observation count mismatch: expected={} actual={}",
+            equity_curve.len(),
+            contract.observations.len()
+        ));
+    }
+    let mut rates = Vec::with_capacity(equity_curve.len());
+    for (point, observation) in equity_curve.iter().zip(&contract.observations) {
+        if observation.date != point.date {
+            return Err(format!(
+                "risk-free rate date mismatch: expected={} actual={}",
+                point.date, observation.date
+            ));
+        }
+        if observation.source_date > observation.date {
+            return Err(format!(
+                "risk-free rate uses future observation: date={} source_date={}",
+                observation.date, observation.source_date
+            ));
+        }
+        let staleness = observation
+            .date
+            .signed_duration_since(observation.source_date)
+            .num_days();
+        if staleness < 0 || staleness as usize > contract.max_staleness_days {
+            return Err(format!(
+                "risk-free rate observation is stale: date={} source_date={} days={}",
+                observation.date, observation.source_date, staleness
+            ));
+        }
+        if !observation.annual_rate.is_finite()
+            || observation.annual_rate <= -1.0
+            || observation.annual_rate >= 1.0
+            || !observation.daily_rate.is_finite()
+            || observation.daily_rate <= -1.0
+        {
+            return Err(format!(
+                "risk-free rate observation is invalid: date={}",
+                observation.date
+            ));
+        }
+        let periods_per_year =
+            if contract.periods_per_year.is_finite() && contract.periods_per_year > 0.0 {
+                contract.periods_per_year
+            } else {
+                TRADING_DAYS_PER_YEAR
+            };
+        let expected_daily = (1.0 + observation.annual_rate).powf(1.0 / periods_per_year) - 1.0;
+        if (expected_daily - observation.daily_rate).abs() > 1e-12 {
+            return Err(format!(
+                "risk-free daily conversion mismatch: date={} expected={} actual={}",
+                observation.date, expected_daily, observation.daily_rate
+            ));
+        }
+        rates.push(observation.daily_rate);
+    }
+    Ok((rates, contract.clone()))
+}
+
+fn effective_annual_risk_free_rate(daily_rates: &[f64], periods_per_year: f64) -> f64 {
+    if daily_rates.is_empty() {
+        return 0.0;
+    }
+    let mean_log =
+        daily_rates.iter().map(|rate| rate.ln_1p()).sum::<f64>() / daily_rates.len() as f64;
+    (mean_log * periods_per_year).exp_m1()
+}
+
+fn annualized_sharpe(returns: &[f64], daily_risk_free_rates: &[f64], periods_per_year: f64) -> f64 {
+    if returns.len() < 2 || returns.len() != daily_risk_free_rates.len() {
         return 0.0;
     }
     let adjusted = returns
         .iter()
-        .map(|value| value - daily_rf)
+        .zip(daily_risk_free_rates)
+        .map(|(value, risk_free)| value - risk_free)
         .collect::<Vec<_>>();
     let mean_ret = mean(&adjusted);
     let std = std_dev(&adjusted);
@@ -333,23 +488,24 @@ fn annualized_sharpe(returns: &[f64], daily_rf: f64, periods_per_year: f64) -> f
     }
 }
 
-fn annualized_sortino(returns: &[f64], daily_rf: f64, periods_per_year: f64) -> f64 {
-    if returns.is_empty() {
+fn annualized_sortino(
+    returns: &[f64],
+    daily_risk_free_rates: &[f64],
+    periods_per_year: f64,
+) -> f64 {
+    if returns.is_empty() || returns.len() != daily_risk_free_rates.len() {
         return 0.0;
     }
     let adjusted = returns
         .iter()
-        .map(|value| value - daily_rf)
+        .zip(daily_risk_free_rates)
+        .map(|(value, risk_free)| value - risk_free)
         .collect::<Vec<_>>();
     let downside = adjusted
         .iter()
-        .filter(|value| **value < 0.0)
-        .map(|value| value.powi(2))
-        .collect::<Vec<_>>();
-    if downside.is_empty() {
-        return 0.0;
-    }
-    let downside_dev = (downside.iter().sum::<f64>() / downside.len() as f64).sqrt();
+        .map(|value| value.min(0.0).powi(2))
+        .sum::<f64>();
+    let downside_dev = (downside / adjusted.len() as f64).sqrt();
     if downside_dev <= f64::EPSILON {
         0.0
     } else {
@@ -357,32 +513,60 @@ fn annualized_sortino(returns: &[f64], daily_rf: f64, periods_per_year: f64) ->
     }
 }
 
+fn annualized_downside_risk(
+    returns: &[f64],
+    daily_risk_free_rates: &[f64],
+    periods_per_year: f64,
+) -> f64 {
+    if returns.is_empty() || returns.len() != daily_risk_free_rates.len() {
+        return 0.0;
+    }
+    let downside_mean_square = returns
+        .iter()
+        .zip(daily_risk_free_rates)
+        .map(|(value, risk_free)| (value - risk_free).min(0.0).powi(2))
+        .sum::<f64>()
+        / returns.len() as f64;
+    downside_mean_square.sqrt() * periods_per_year.sqrt()
+}
+
 fn annualized_std(values: &[f64], periods_per_year: f64) -> f64 {
     std_dev(values) * periods_per_year.sqrt()
 }
 
-fn alpha_beta(returns: &[f64], benchmark_returns: &[f64], daily_rf: f64) -> (f64, f64) {
-    if returns.len() < 2 || returns.len() != benchmark_returns.len() {
+fn alpha_beta(
+    returns: &[f64],
+    benchmark_returns: &[f64],
+    daily_risk_free_rates: &[f64],
+) -> (f64, f64) {
+    if returns.len() < 2
+        || returns.len() != benchmark_returns.len()
+        || returns.len() != daily_risk_free_rates.len()
+    {
         return (0.0, 0.0);
     }
     let strategy_excess = returns
         .iter()
-        .map(|value| value - daily_rf)
+        .zip(daily_risk_free_rates)
+        .map(|(value, risk_free)| value - risk_free)
         .collect::<Vec<_>>();
     let benchmark_excess = benchmark_returns
         .iter()
-        .map(|value| value - daily_rf)
+        .zip(daily_risk_free_rates)
+        .map(|(value, risk_free)| value - risk_free)
         .collect::<Vec<_>>();
     let mean_strategy = mean(&strategy_excess);
     let mean_benchmark = mean(&benchmark_excess);
-    let variance_benchmark = variance(&benchmark_excess);
+    let mean_raw_strategy = mean(returns);
+    let mean_raw_benchmark = mean(benchmark_returns);
+    let variance_benchmark = variance(benchmark_returns);
     if variance_benchmark <= f64::EPSILON {
         return (0.0, 0.0);
     }
-    let covariance = strategy_excess
+    let covariance = returns
         .iter()
-        .zip(benchmark_excess.iter())
-        .map(|(lhs, rhs)| (lhs - mean_strategy) * (rhs - mean_benchmark))
+        .zip(benchmark_returns.iter())
+        .map(|(lhs, rhs)| (lhs - mean_raw_strategy) * (rhs - mean_raw_benchmark))
         .sum::<f64>()
         / (strategy_excess.len() - 1) as f64;
     let beta = covariance / variance_benchmark;
@@ -391,7 +575,9 @@ fn alpha_beta(returns: &[f64], benchmark_returns: &[f64], daily_rf: f64) -> (f64
 }
 
 fn drawdown_stats(nav: &[f64]) -> (f64, usize) {
-    let mut peak = 0.0_f64;
+    // NAV is measured against the pre-period capital. The first real loss
+    // must not become a new zero-drawdown baseline.
+    let mut peak = 1.0_f64;
     let mut max_drawdown = 0.0_f64;
     let mut duration = 0_usize;
     let mut max_duration = 0_usize;
@@ -522,6 +708,26 @@ where
         .collect()
 }
 
+fn group_monthly_risk_free_returns(
+    equity_curve: &[DailyEquityPoint],
+    daily_risk_free_rates: &[f64],
+) -> Vec<f64> {
+    if equity_curve.len() != daily_risk_free_rates.len() {
+        return Vec::new();
+    }
+    let mut monthly_growth = BTreeMap::<(i32, u32), f64>::new();
+    for (point, daily_rate) in equity_curve.iter().zip(daily_risk_free_rates) {
+        let growth = monthly_growth
+            .entry((point.date.year(), point.date.month()))
+            .or_insert(1.0);
+        *growth *= 1.0 + daily_rate;
+    }
+    monthly_growth
+        .into_values()
+        .map(|growth| growth - 1.0)
+        .collect()
+}
+
 fn mean(values: &[f64]) -> f64 {
     if values.is_empty() {
         0.0
@@ -580,6 +786,28 @@ fn safe_div(numerator: f64, denominator: f64, fallback: f64) -> f64 {
 mod tests {
     use super::*;
 
+    #[test]
+    fn drawdown_includes_initial_nav_without_adding_a_trading_day() {
+        let (drawdown, duration) = drawdown_stats(&[0.9, 0.99]);
+        assert!((drawdown + 0.1).abs() < 1e-12);
+        assert_eq!(duration, 2);
+        assert_eq!(drawdown_stats(&[1.0, 1.1, 1.1]), (0.0, 0));
+        assert_eq!(drawdown_stats(&[0.0]), (-1.0, 1));
+        assert_eq!(drawdown_stats(&[]), (0.0, 0));
+    }
+
+    #[test]
+    fn first_day_loss_is_preserved_in_shared_backtest_metrics() {
+        let curve = vec![
+            equity_point("2025-01-03", 99.16648349337, 98.81608059815, 100.0),
+            equity_point("2025-01-06", 99.68551588547, 98.65392198168, 98.81608059815),
+        ];
+        let metrics = compute_backtest_metrics(&curve, &[], &[], &[], 100.0, None).unwrap();
+        assert!((metrics.max_drawdown + 0.0083351650663).abs() < 1e-12);
+        assert_eq!(metrics.total_trade_days, 2);
+        assert_eq!(metrics.max_drawdown_duration_days, 2);
+    }
+
     fn equity_point(
         date: &str,
         total_equity: f64,
@@ -587,6 +815,7 @@ mod tests {
         benchmark_prev_close: f64,
     ) -> DailyEquityPoint {
         DailyEquityPoint {
+            signal_baseline: false,
             date: NaiveDate::parse_from_str(date, "%Y-%m-%d").unwrap(),
             cash: total_equity,
             market_value: 0.0,
@@ -606,16 +835,26 @@ mod tests {
             equity_point("2025-01-02", 100.0, 5797.089, 5957.717),
             equity_point("2025-12-31", 120.0, 7595.285, 7597.299),
         ];
-        let metrics = compute_backtest_metrics(&curve, &[], &[], &[], 100.0);
+        let metrics = compute_backtest_metrics(&curve, &[], &[], &[], 100.0, None).unwrap();
         let expected = 7595.285 / 5957.717 - 1.0;
         assert!((metrics.benchmark_cumulative_return - expected).abs() < 1e-12);
     }
 
+    #[test]
+    fn signal_baseline_uses_same_close_for_strategy_and_benchmark() {
+        let mut baseline=equity_point("2026-09-04",100.0,4548.0499,4552.5784);
+        baseline.signal_baseline=true;
+        let curve=vec![baseline,equity_point("2026-09-08",104.0,4558.7371,4575.0245)];
+        let metrics=compute_backtest_metrics(&curve,&[],&[],&[],100.0,None).unwrap();
+        assert!((metrics.benchmark_cumulative_return-(4558.7371/4548.0499-1.0)).abs()<1e-12);
+    }
+
     #[test]
     fn external_cash_flow_is_excluded_from_return_and_reported_separately() {
         let curve = vec![
             equity_point("2025-01-02", 100.0, 100.0, 100.0),
             DailyEquityPoint {
+                signal_baseline: false,
                 date: NaiveDate::from_ymd_opt(2025, 1, 3).unwrap(),
                 cash: 220.0,
                 market_value: 0.0,
@@ -635,9 +874,66 @@ mod tests {
             total_equity: 200.0,
             note: "deposit_withdraw amount=100.00 reason=test".to_string(),
         }];
-        let metrics = compute_backtest_metrics(&curve, &[], &[], &events, 100.0);
+        let metrics = compute_backtest_metrics(&curve, &[], &[], &events, 100.0, None).unwrap();
         assert!((metrics.total_return - 0.1).abs() < 1e-12);
         assert!((metrics.unit_nav - 1.1).abs() < 1e-12);
         assert!((metrics.external_cash_flow_total - 100.0).abs() < 1e-12);
     }
+
+    #[test]
+    fn risk_adjusted_metrics_use_daily_pit_rates_and_all_period_downside() {
+        let curve = vec![
+            equity_point("2026-01-02", 101.0, 100.0, 100.0),
+            equity_point("2026-01-05", 98.98, 100.0, 100.0),
+            equity_point("2026-01-06", 100.4647, 100.0, 100.0),
+            equity_point("2026-01-07", 99.9623765, 100.0, 100.0),
+        ];
+        let annual_rates = [0.012, 0.012, 0.013, 0.013];
+        let observations = curve
+            .iter()
+            .zip(annual_rates)
+            .map(|(point, annual_rate)| RiskFreeRateObservation {
+                date: point.date,
+                source_date: point.date,
+                annual_rate,
+                daily_rate: (1.0 + annual_rate).powf(1.0 / TRADING_DAYS_PER_YEAR) - 1.0,
+            })
+            .collect();
+        let contract = RiskFreeRateContract {
+            version: "cn-government-bond-3m-pit-daily/v1".to_string(),
+            source: "test".to_string(),
+            tenor: "3M".to_string(),
+            periods_per_year: TRADING_DAYS_PER_YEAR,
+            max_staleness_days: 15,
+            observed_max_staleness_days: 0,
+            sha256: "a".repeat(64),
+            observations,
+        };
+        let metrics =
+            compute_backtest_metrics(&curve, &[], &[], &[], 100.0, Some(&contract)).unwrap();
+
+        let returns = [0.01, -0.02, 0.015, -0.005];
+        let daily_rates = annual_rates
+            .map(|annual_rate| (1.0 + annual_rate).powf(1.0 / TRADING_DAYS_PER_YEAR) - 1.0);
+        let adjusted = returns
+            .iter()
+            .zip(daily_rates)
+            .map(|(value, risk_free)| value - risk_free)
+            .collect::<Vec<_>>();
+        let expected_sharpe = mean(&adjusted) / std_dev(&adjusted) * TRADING_DAYS_PER_YEAR.sqrt();
+        let downside = (adjusted
+            .iter()
+            .map(|value| value.min(0.0).powi(2))
+            .sum::<f64>()
+            / adjusted.len() as f64)
+            .sqrt();
+        let expected_sortino = mean(&adjusted) / downside * TRADING_DAYS_PER_YEAR.sqrt();
+        assert!((metrics.sharpe - expected_sharpe).abs() < 1e-12);
+        assert!((metrics.sortino - expected_sortino).abs() < 1e-12);
+        assert!((metrics.downside_risk - downside * TRADING_DAYS_PER_YEAR.sqrt()).abs() < 1e-12);
+        assert_eq!(metrics.risk_free_rate_source, "test");
+        assert_eq!(metrics.risk_free_rate_tenor, "3M");
+        assert_eq!(metrics.risk_free_rate_observation_count, 4);
+        assert_ne!(metrics.risk_free_rate, 0.022);
+    }
 }

crates/fidc-core/src/numeric_expr_vm.rs

@@ -11,6 +11,7 @@ pub(crate) enum ValueType {
 pub(crate) enum Value {
     Number(f64),
     Boolean(bool),
+    Missing(ValueType),
 }
 
 impl Value {
@@ -18,20 +19,28 @@ impl Value {
         match self {
             Self::Number(_) => ValueType::Number,
             Self::Boolean(_) => ValueType::Boolean,
+            Self::Missing(value_type) => value_type,
         }
     }
 
     pub(crate) fn as_number(self) -> Option<f64> {
         match self {
             Self::Number(value) => Some(value),
-            Self::Boolean(_) => None,
+            Self::Boolean(_) | Self::Missing(_) => None,
         }
     }
 
     pub(crate) fn as_bool(self) -> Option<bool> {
         match self {
             Self::Boolean(value) => Some(value),
-            Self::Number(_) => None,
+            Self::Number(_) | Self::Missing(_) => None,
+        }
+    }
+
+    fn normalized(self) -> Self {
+        match self {
+            Self::Number(value) if !value.is_finite() => Self::Missing(ValueType::Number),
+            value => value,
         }
     }
 }
@@ -103,6 +112,8 @@ enum BinaryOp {
     LessEqual,
     Greater,
     GreaterEqual,
+    And,
+    Or,
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
@@ -134,7 +145,7 @@ enum Instruction {
     Binary(BinaryOp),
     Call { builtin: Builtin, argc: u8 },
     JumpIfFalse(usize),
-    JumpIfTrue(usize),
+    ShortCircuit { on: bool, target: usize },
     Jump(usize),
     Return,
 }
@@ -165,7 +176,7 @@ impl Program {
         let mut pc = 0usize;
         while let Some(instruction) = self.instructions.get(pc) {
             match *instruction {
-                Instruction::Push(value) => scratch.stack.push(value),
+                Instruction::Push(value) => scratch.stack.push(value.normalized()),
                 Instruction::LoadVariable(index) => {
                     let index = usize::from(index);
                     let cached = scratch.variables[index];
@@ -173,7 +184,8 @@ impl Program {
                         Some(value) => value,
                         None => {
                             let expected_type = self.variable_types[index];
-                            let value = resolve(index, &self.variables[index], expected_type)?;
+                            let value =
+                                resolve(index, &self.variables[index], expected_type)?.normalized();
                             if value.value_type() != expected_type {
                                 return Err(EvalError::new(format!(
                                     "variable {} expected {:?}, got {:?}",
@@ -219,15 +231,23 @@ impl Program {
                     scratch.stack.push(value);
                 }
                 Instruction::JumpIfFalse(target) => {
-                    let condition = pop_bool(&mut scratch.stack)?;
+                    // Like CASE WHEN, only a known true condition takes this branch.
+                    let condition = match pop(&mut scratch.stack)? {
+                        Value::Boolean(value) => value,
+                        Value::Missing(ValueType::Boolean) => false,
+                        _ => return Err(EvalError::new("boolean operand required")),
+                    };
                     if !condition {
                         pc = target;
                         continue;
                     }
                 }
-                Instruction::JumpIfTrue(target) => {
-                    let condition = pop_bool(&mut scratch.stack)?;
-                    if condition {
+                Instruction::ShortCircuit { on, target } => {
+                    let condition =
+                        scratch.stack.last().copied().ok_or_else(|| {
+                            EvalError::new("stack underflow during short circuit")
+                        })?;
+                    if condition.as_bool() == Some(on) {
                         pc = target;
                         continue;
                     }
@@ -284,43 +304,140 @@ fn pop(stack: &mut Vec<Value>) -> Result<Value, EvalError> {
     stack.pop().ok_or_else(|| EvalError::new("stack underflow"))
 }
 
-fn pop_bool(stack: &mut Vec<Value>) -> Result<bool, EvalError> {
-    pop(stack)?
-        .as_bool()
-        .ok_or_else(|| EvalError::new("boolean operand required"))
-}
-
 fn number(value: Value) -> Result<f64, EvalError> {
+    if value == Value::Missing(ValueType::Number) {
+        return Ok(f64::NAN);
+    }
     value
         .as_number()
         .ok_or_else(|| EvalError::new("numeric operand required"))
 }
 
 fn eval_unary(operator: UnaryOp, value: Value) -> Result<Value, EvalError> {
-    match operator {
+    if matches!(value, Value::Missing(_)) {
+        return Ok(value);
+    }
+    let result: Result<Value, EvalError> = match operator {
         UnaryOp::Negate => Ok(Value::Number(-number(value)?)),
         UnaryOp::Not => {
             Ok(Value::Boolean(!value.as_bool().ok_or_else(|| {
                 EvalError::new("boolean operand required for !")
             })?))
         }
-    }
+    };
+    Ok(result?.normalized())
 }
 
 fn eval_binary(operator: BinaryOp, lhs: Value, rhs: Value) -> Result<Value, EvalError> {
-    match operator {
+    if matches!(operator, BinaryOp::And | BinaryOp::Or) {
+        let (lhs, rhs) = (lhs.as_bool(), rhs.as_bool());
+        let result = match operator {
+            BinaryOp::And if lhs == Some(false) || rhs == Some(false) => Some(false),
+            BinaryOp::And if lhs == Some(true) && rhs == Some(true) => Some(true),
+            BinaryOp::Or if lhs == Some(true) || rhs == Some(true) => Some(true),
+            BinaryOp::Or if lhs == Some(false) && rhs == Some(false) => Some(false),
+            _ => None,
+        };
+        return Ok(result
+            .map(Value::Boolean)
+            .unwrap_or(Value::Missing(ValueType::Boolean)));
+    }
+    if matches!(lhs, Value::Missing(_)) || matches!(rhs, Value::Missing(_)) {
+        let value_type = match operator {
+            BinaryOp::Add
+            | BinaryOp::Subtract
+            | BinaryOp::Multiply
+            | BinaryOp::Divide
+            | BinaryOp::Remainder => ValueType::Number,
+            _ => ValueType::Boolean,
+        };
+        return Ok(Value::Missing(value_type));
+    }
+    let result: Result<Value, EvalError> = match operator {
         BinaryOp::Add => Ok(Value::Number(number(lhs)? + number(rhs)?)),
         BinaryOp::Subtract => Ok(Value::Number(number(lhs)? - number(rhs)?)),
         BinaryOp::Multiply => Ok(Value::Number(number(lhs)? * number(rhs)?)),
         BinaryOp::Divide => Ok(Value::Number(number(lhs)? / number(rhs)?)),
         BinaryOp::Remainder => Ok(Value::Number(number(lhs)? % number(rhs)?)),
-        BinaryOp::Equal => Ok(Value::Boolean(lhs == rhs)),
-        BinaryOp::NotEqual => Ok(Value::Boolean(lhs != rhs)),
-        BinaryOp::Less => Ok(Value::Boolean(number(lhs)? < number(rhs)?)),
-        BinaryOp::LessEqual => Ok(Value::Boolean(number(lhs)? <= number(rhs)?)),
-        BinaryOp::Greater => Ok(Value::Boolean(number(lhs)? > number(rhs)?)),
-        BinaryOp::GreaterEqual => Ok(Value::Boolean(number(lhs)? >= number(rhs)?)),
+        BinaryOp::Equal => Ok(Value::Boolean(match (lhs, rhs) {
+            (Value::Number(lhs), Value::Number(rhs)) => float_equal(lhs, rhs),
+            (Value::Boolean(lhs), Value::Boolean(rhs)) => lhs == rhs,
+            _ => {
+                return Err(EvalError::new(
+                    "comparison operands must have the same type",
+                ));
+            }
+        })),
+        BinaryOp::NotEqual => Ok(Value::Boolean(match (lhs, rhs) {
+            (Value::Number(lhs), Value::Number(rhs)) => float_not_equal(lhs, rhs),
+            (Value::Boolean(lhs), Value::Boolean(rhs)) => lhs != rhs,
+            _ => {
+                return Err(EvalError::new(
+                    "comparison operands must have the same type",
+                ));
+            }
+        })),
+        BinaryOp::Less => {
+            let (lhs, rhs) = (number(lhs)?, number(rhs)?);
+            Ok(Value::Boolean(
+                (rhs - lhs) / float_comparison_scale(lhs, rhs) > f64::EPSILON,
+            ))
+        }
+        BinaryOp::LessEqual => {
+            let (lhs, rhs) = (number(lhs)?, number(rhs)?);
+            Ok(Value::Boolean(
+                (rhs - lhs) / float_comparison_scale(lhs, rhs) > -f64::EPSILON,
+            ))
+        }
+        BinaryOp::Greater => {
+            let (lhs, rhs) = (number(lhs)?, number(rhs)?);
+            Ok(Value::Boolean(
+                (lhs - rhs) / float_comparison_scale(lhs, rhs) > f64::EPSILON,
+            ))
+        }
+        BinaryOp::GreaterEqual => {
+            let (lhs, rhs) = (number(lhs)?, number(rhs)?);
+            Ok(Value::Boolean(
+                (lhs - rhs) / float_comparison_scale(lhs, rhs) > -f64::EPSILON,
+            ))
+        }
+        BinaryOp::And | BinaryOp::Or => unreachable!(),
+    };
+    Ok(result?.normalized())
+}
+
+pub(crate) fn finite_comparison(operator: &str, lhs: f64, rhs: f64) -> Option<bool> {
+    if !lhs.is_finite() || !rhs.is_finite() {
+        return None;
     }
+    let operator = match operator {
+        "==" => BinaryOp::Equal,
+        "!=" => BinaryOp::NotEqual,
+        "<" => BinaryOp::Less,
+        "<=" => BinaryOp::LessEqual,
+        ">" => BinaryOp::Greater,
+        ">=" => BinaryOp::GreaterEqual,
+        _ => return None,
+    };
+    eval_binary(operator, Value::Number(lhs), Value::Number(rhs))
+        .ok()?
+        .as_bool()
+}
+
+fn float_comparison_scale(lhs: f64, rhs: f64) -> f64 {
+    if lhs * rhs == 0.0 {
+        1.0
+    } else {
+        lhs.abs().max(rhs.abs())
+    }
+}
+
+fn float_equal(lhs: f64, rhs: f64) -> bool {
+    (lhs - rhs).abs() / float_comparison_scale(lhs, rhs) <= f64::EPSILON
+}
+
+fn float_not_equal(lhs: f64, rhs: f64) -> bool {
+    (lhs - rhs).abs() / float_comparison_scale(lhs, rhs) > f64::EPSILON
 }
 
 fn eval_builtin(builtin: Builtin, args: &[Value]) -> Result<Value, EvalError> {
@@ -330,7 +447,16 @@ fn eval_builtin(builtin: Builtin, args: &[Value]) -> Result<Value, EvalError> {
             .ok_or_else(|| EvalError::new("missing builtin argument"))
             .and_then(number)
     };
-    Ok(match builtin {
+    if !matches!(builtin, Builtin::Nz | Builtin::SafeDiv | Builtin::Iff)
+        && args.iter().any(|value| matches!(value, Value::Missing(_)))
+    {
+        return Ok(Value::Missing(if builtin == Builtin::Between {
+            ValueType::Boolean
+        } else {
+            ValueType::Number
+        }));
+    }
+    let result = match builtin {
         Builtin::Round => Value::Number(numeric(0)?.round()),
         Builtin::Floor => Value::Number(numeric(0)?.floor()),
         Builtin::Ceil => Value::Number(numeric(0)?.ceil()),
@@ -341,7 +467,13 @@ fn eval_builtin(builtin: Builtin, args: &[Value]) -> Result<Value, EvalError> {
         Builtin::Pow => Value::Number(numeric(0)?.powf(numeric(1)?)),
         Builtin::Log => Value::Number(numeric(0)?.ln()),
         Builtin::Exp => Value::Number(numeric(0)?.exp()),
-        Builtin::Clamp => Value::Number(numeric(0)?.clamp(numeric(1)?, numeric(2)?)),
+        Builtin::Clamp => {
+            let (value, low, high) = (numeric(0)?, numeric(1)?, numeric(2)?);
+            if low > high {
+                return Err(EvalError::new("clamp lower bound exceeds upper bound"));
+            }
+            Value::Number(value.clamp(low, high))
+        }
         Builtin::Between => {
             let value = numeric(0)?;
             Value::Boolean(value >= numeric(1)? && value <= numeric(2)?)
@@ -365,13 +497,15 @@ fn eval_builtin(builtin: Builtin, args: &[Value]) -> Result<Value, EvalError> {
             })
         }
         Builtin::Iff => {
-            let condition = args
-                .first()
-                .and_then(|value| value.as_bool())
-                .ok_or_else(|| EvalError::new("iff condition must be boolean"))?;
+            let condition = match args.first().copied() {
+                Some(Value::Boolean(value)) => value,
+                Some(Value::Missing(ValueType::Boolean)) => false,
+                _ => return Err(EvalError::new("iff condition must be boolean")),
+            };
             if condition { args[1] } else { args[2] }
         }
-    })
+    };
+    Ok(result.normalized())
 }
 
 #[derive(Debug, Clone, PartialEq)]
@@ -1067,24 +1201,20 @@ where
             let lhs_type = self.expression(lhs)?;
             require_type(lhs_type, ValueType::Boolean, position)?;
             let branch = self.instructions.len();
-            self.instructions.push(match operator {
-                ParsedBinaryOp::And => Instruction::JumpIfFalse(usize::MAX),
-                ParsedBinaryOp::Or => Instruction::JumpIfTrue(usize::MAX),
-                _ => unreachable!(),
+            self.instructions.push(Instruction::ShortCircuit {
+                on: operator == ParsedBinaryOp::Or,
+                target: usize::MAX,
             });
             let rhs_type = self.expression(rhs)?;
             require_type(rhs_type, ValueType::Boolean, rhs.position())?;
-            let end_jump = self.instructions.len();
-            self.instructions.push(Instruction::Jump(usize::MAX));
-            let short_target = self.instructions.len();
             self.instructions
-                .push(Instruction::Push(Value::Boolean(matches!(
-                    operator,
-                    ParsedBinaryOp::Or
-                ))));
+                .push(Instruction::Binary(if operator == ParsedBinaryOp::And {
+                    BinaryOp::And
+                } else {
+                    BinaryOp::Or
+                }));
             let end_target = self.instructions.len();
-            patch_jump(&mut self.instructions, branch, short_target)?;
-            patch_jump(&mut self.instructions, end_jump, end_target)?;
+            patch_jump(&mut self.instructions, branch, end_target)?;
             return Ok(ValueType::Boolean);
         }
 
@@ -1233,7 +1363,7 @@ fn patch_jump(
     };
     match instruction {
         Instruction::JumpIfFalse(value)
-        | Instruction::JumpIfTrue(value)
+        | Instruction::ShortCircuit { target: value, .. }
         | Instruction::Jump(value) => {
             *value = target;
             Ok(())
@@ -1313,6 +1443,122 @@ mod tests {
         );
     }
 
+    #[test]
+    fn floating_comparisons_match_rhai_epsilon_semantics() {
+        let adjacent = 11.699999999999998_f64;
+        assert_eq!(
+            evaluate("value == 11.7", &[("value", Value::Number(adjacent))]),
+            Value::Boolean(true)
+        );
+        assert_eq!(
+            evaluate("value != 11.7", &[("value", Value::Number(adjacent))]),
+            Value::Boolean(false)
+        );
+        assert_eq!(
+            evaluate("value <= 11.7", &[("value", Value::Number(adjacent))]),
+            Value::Boolean(true)
+        );
+        assert_eq!(
+            evaluate("value >= 11.7", &[("value", Value::Number(adjacent))]),
+            Value::Boolean(true)
+        );
+        assert_eq!(
+            evaluate("value < 11.7", &[("value", Value::Number(adjacent))]),
+            Value::Boolean(false)
+        );
+        assert_eq!(
+            evaluate("value > 11.7", &[("value", Value::Number(adjacent))]),
+            Value::Boolean(false)
+        );
+    }
+
+    #[test]
+    fn nullable_boolean_truth_table_preserves_unknown_under_negation() {
+        let unknown = Value::Missing(ValueType::Boolean);
+        let states = [Value::Boolean(false), Value::Boolean(true), unknown];
+        let and = [
+            [states[0], states[0], states[0]],
+            [states[0], states[1], unknown],
+            [states[0], unknown, unknown],
+        ];
+        let or = [
+            [states[0], states[1], unknown],
+            [states[1], states[1], states[1]],
+            [unknown, states[1], unknown],
+        ];
+        for (i, lhs) in states.iter().enumerate() {
+            for (j, rhs) in states.iter().enumerate() {
+                let values = [("lhs", *lhs), ("rhs", *rhs)];
+                assert_eq!(evaluate("lhs && rhs", &values), and[i][j]);
+                assert_eq!(evaluate("lhs || rhs", &values), or[i][j]);
+                assert_eq!(evaluate("!!(lhs && rhs)", &values), and[i][j]);
+                assert_eq!(evaluate("!!(lhs || rhs)", &values), or[i][j]);
+            }
+        }
+        assert_eq!(evaluate("!value", &[("value", unknown)]), unknown);
+    }
+
+    #[test]
+    fn missing_numeric_operands_do_not_become_boolean_false_or_zero() {
+        let unknown = Value::Missing(ValueType::Boolean);
+        for missing in [f64::NAN, f64::INFINITY, f64::NEG_INFINITY] {
+            for operator in ["==", "!=", "<", "<=", ">", ">="] {
+                let values = [("value", Value::Number(missing))];
+                assert_eq!(evaluate(&format!("value {operator} 0.0"), &values), unknown);
+                assert_eq!(
+                    evaluate(&format!("!(0.0 {operator} value)"), &values),
+                    unknown
+                );
+                assert_eq!(
+                    evaluate(&format!("!((value + 1.0) {operator} 0.0)"), &values),
+                    unknown
+                );
+            }
+        }
+        let missing = [("value", Value::Number(f64::NAN))];
+        assert_eq!(evaluate("!(min(value, 1.0) > 0.0)", &missing), unknown);
+        assert_eq!(evaluate("!between(value, 0.0, 1.0)", &missing), unknown);
+        assert_eq!(evaluate("!(1.0 / 0.0 > 0.0)", &[]), unknown);
+        assert_eq!(evaluate("!(sqrt(-1.0) > 0.0)", &[]), unknown);
+        assert_eq!(evaluate("nz(value, 7.0)", &missing), Value::Number(7.0));
+        assert_eq!(
+            evaluate("nz(value, 0.0) == 0.0", &missing),
+            Value::Boolean(true)
+        );
+    }
+
+    #[test]
+    fn nullable_short_circuit_and_explicit_conditional_branches_are_lazy() {
+        for source in [
+            "false && missing",
+            "true || missing",
+            "if true { true } else { missing }",
+        ] {
+            let program = compile(source, |_| Some(ValueType::Boolean)).unwrap();
+            program
+                .evaluate(&mut Scratch::default(), |_, _, _| {
+                    Err(EvalError::new("unused input must not be resolved"))
+                })
+                .unwrap();
+        }
+        let unknown = Value::Missing(ValueType::Boolean);
+        assert_eq!(
+            evaluate("if value { 1.0 } else { 2.0 }", &[("value", unknown)]),
+            Value::Number(2.0)
+        );
+        assert_eq!(
+            evaluate("iff(value, 1.0, 2.0)", &[("value", unknown)]),
+            Value::Number(2.0)
+        );
+    }
+
+    #[test]
+    fn invalid_clamp_returns_error_without_panicking() {
+        let program = compile("clamp(1.0, 2.0, 0.0)", |_| None).unwrap();
+        let result = program.evaluate(&mut Scratch::default(), |_, _, _| unreachable!());
+        assert!(result.unwrap_err().to_string().contains("lower bound"));
+    }
+
     #[test]
     fn short_circuit_does_not_resolve_unused_variable() {
         let program = compile("false && missing", |name| {

crates/fidc-core/src/numeric_factors.rs

@@ -0,0 +1,415 @@
+use std::borrow::Cow;
+use std::collections::BTreeMap;
+use std::fmt;
+use std::ops::Index;
+
+use compact_str::CompactString;
+use serde::de::{MapAccess, Visitor};
+use serde::ser::SerializeMap;
+use serde::{Deserialize, Deserializer, Serialize, Serializer};
+
+/// Sorted numeric fields stored contiguously, without a tree node per snapshot.
+#[derive(Clone, Default, PartialEq)]
+pub struct NumericFactorMap {
+    entries: Vec<(CompactString, f64)>,
+}
+
+fn compact_key(key: Cow<'static, str>) -> CompactString {
+    match key {
+        Cow::Borrowed(value) => CompactString::const_new(value),
+        Cow::Owned(value) => CompactString::from(value),
+    }
+}
+
+impl NumericFactorMap {
+    pub const fn new() -> Self {
+        Self {
+            entries: Vec::new(),
+        }
+    }
+
+    pub fn len(&self) -> usize {
+        self.entries.len()
+    }
+    pub fn is_empty(&self) -> bool {
+        self.entries.is_empty()
+    }
+    pub fn clear(&mut self) {
+        self.entries.clear();
+    }
+
+    /// Reserve known new fields without geometric spare capacity per snapshot.
+    pub fn reserve_exact(&mut self, additional: usize) {
+        self.entries.reserve_exact(additional);
+    }
+
+    pub fn get(&self, key: &str) -> Option<&f64> {
+        self.entries
+            .binary_search_by(|(name, _)| name.as_str().cmp(key))
+            .ok()
+            .map(|index| &self.entries[index].1)
+    }
+
+    pub fn get_mut(&mut self, key: &str) -> Option<&mut f64> {
+        self.entries
+            .binary_search_by(|(name, _)| name.as_str().cmp(key))
+            .ok()
+            .map(|index| &mut self.entries[index].1)
+    }
+
+    pub fn contains_key(&self, key: &str) -> bool {
+        self.get(key).is_some()
+    }
+
+    pub fn insert(&mut self, key: Cow<'static, str>, value: f64) -> Option<f64> {
+        self.insert_compact(compact_key(key), value)
+    }
+
+    pub fn insert_compact(&mut self, key: CompactString, value: f64) -> Option<f64> {
+        if self
+            .entries
+            .last()
+            .is_none_or(|(last, _)| last.as_str() < key.as_str())
+        {
+            self.entries.push((key, value));
+            return None;
+        }
+        match self
+            .entries
+            .binary_search_by(|(name, _)| name.as_str().cmp(key.as_str()))
+        {
+            Ok(index) => Some(std::mem::replace(&mut self.entries[index].1, value)),
+            Err(index) => {
+                self.entries.insert(index, (key, value));
+                None
+            }
+        }
+    }
+
+    pub fn remove(&mut self, key: &str) -> Option<f64> {
+        self.entries
+            .binary_search_by(|(name, _)| name.as_str().cmp(key))
+            .ok()
+            .map(|index| self.entries.remove(index).1)
+    }
+
+    pub fn retain(&mut self, mut keep: impl FnMut(&CompactString, &mut f64) -> bool) {
+        self.entries.retain_mut(|(key, value)| keep(key, value));
+    }
+
+    pub fn iter(&self) -> Iter<'_> {
+        Iter(self.entries.iter())
+    }
+    pub fn keys(&self) -> impl DoubleEndedIterator<Item = &CompactString> + ExactSizeIterator {
+        self.entries.iter().map(|(key, _)| key)
+    }
+    pub fn values(&self) -> impl DoubleEndedIterator<Item = &f64> + ExactSizeIterator {
+        self.entries.iter().map(|(_, value)| value)
+    }
+}
+
+impl fmt::Debug for NumericFactorMap {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_map().entries(self).finish()
+    }
+}
+
+impl Index<&str> for NumericFactorMap {
+    type Output = f64;
+    fn index(&self, key: &str) -> &Self::Output {
+        self.get(key).expect("numeric factor key not found")
+    }
+}
+
+pub struct Iter<'a>(std::slice::Iter<'a, (CompactString, f64)>);
+impl<'a> Iterator for Iter<'a> {
+    type Item = (&'a CompactString, &'a f64);
+    fn next(&mut self) -> Option<Self::Item> {
+        self.0.next().map(|(k, v)| (k, v))
+    }
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        self.0.size_hint()
+    }
+}
+impl DoubleEndedIterator for Iter<'_> {
+    fn next_back(&mut self) -> Option<Self::Item> {
+        self.0.next_back().map(|(k, v)| (k, v))
+    }
+}
+impl ExactSizeIterator for Iter<'_> {}
+impl<'a> IntoIterator for &'a NumericFactorMap {
+    type Item = (&'a CompactString, &'a f64);
+    type IntoIter = Iter<'a>;
+    fn into_iter(self) -> Self::IntoIter {
+        self.iter()
+    }
+}
+impl IntoIterator for NumericFactorMap {
+    type Item = (CompactString, f64);
+    type IntoIter = std::vec::IntoIter<Self::Item>;
+    fn into_iter(self) -> Self::IntoIter {
+        self.entries.into_iter()
+    }
+}
+
+impl FromIterator<(Cow<'static, str>, f64)> for NumericFactorMap {
+    fn from_iter<T: IntoIterator<Item = (Cow<'static, str>, f64)>>(iter: T) -> Self {
+        iter.into_iter().map(|(key, value)| (compact_key(key), value)).collect()
+    }
+}
+impl FromIterator<(CompactString, f64)> for NumericFactorMap {
+    fn from_iter<T: IntoIterator<Item = (CompactString, f64)>>(iter: T) -> Self {
+        let mut entries: Vec<_> = iter.into_iter().collect();
+        // Stable sorting preserves last-value-wins for repeated input keys.
+        if !entries.windows(2).all(|pair| pair[0].0 <= pair[1].0) {
+            entries.sort_by(|left, right| left.0.cmp(&right.0));
+        }
+        entries.dedup_by(|later, earlier| {
+            if later.0 == earlier.0 {
+                earlier.1 = later.1;
+                true
+            } else {
+                false
+            }
+        });
+        Self { entries }
+    }
+}
+impl Extend<(Cow<'static, str>, f64)> for NumericFactorMap {
+    fn extend<T: IntoIterator<Item = (Cow<'static, str>, f64)>>(&mut self, iter: T) {
+        self.extend(iter.into_iter().map(|(key, value)| (compact_key(key), value)));
+    }
+}
+impl Extend<(CompactString, f64)> for NumericFactorMap {
+    fn extend<T: IntoIterator<Item = (CompactString, f64)>>(&mut self, iter: T) {
+        let mut incoming: Self = iter.into_iter().collect();
+        if incoming.is_empty() {
+            return;
+        }
+        if self.is_empty() {
+            *self = incoming;
+            return;
+        }
+        if self.entries.last().unwrap().0 < incoming.entries[0].0 {
+            self.entries.append(&mut incoming.entries);
+            return;
+        }
+        // Merge sorted sets in linear time; wide factor batches must not shift
+        // the existing vector once per field. Existing keys keep their identity.
+        let mut merged = Vec::with_capacity(self.len() + incoming.len());
+        let mut old = std::mem::take(&mut self.entries).into_iter().peekable();
+        let mut new = incoming.entries.into_iter().peekable();
+        while let (Some(left), Some(right)) = (old.peek(), new.peek()) {
+            match left.0.cmp(&right.0) {
+                std::cmp::Ordering::Less => merged.push(old.next().unwrap()),
+                std::cmp::Ordering::Greater => merged.push(new.next().unwrap()),
+                std::cmp::Ordering::Equal => {
+                    let (key, _) = old.next().unwrap();
+                    merged.push((key, new.next().unwrap().1));
+                }
+            }
+        }
+        merged.extend(old);
+        merged.extend(new);
+        self.entries = merged;
+    }
+}
+impl<const N: usize> From<[(Cow<'static, str>, f64); N]> for NumericFactorMap {
+    fn from(entries: [(Cow<'static, str>, f64); N]) -> Self {
+        entries.into_iter().collect()
+    }
+}
+impl From<BTreeMap<Cow<'static, str>, f64>> for NumericFactorMap {
+    fn from(entries: BTreeMap<Cow<'static, str>, f64>) -> Self {
+        entries.into_iter().collect()
+    }
+}
+
+impl Serialize for NumericFactorMap {
+    fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
+        let mut map = serializer.serialize_map(Some(self.len()))?;
+        for (key, value) in self {
+            map.serialize_entry(key, value)?;
+        }
+        map.end()
+    }
+}
+impl<'de> Deserialize<'de> for NumericFactorMap {
+    fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
+        struct Fields;
+        impl<'de> Visitor<'de> for Fields {
+            type Value = NumericFactorMap;
+            fn expecting(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+                f.write_str("a numeric factor map")
+            }
+            fn visit_map<A: MapAccess<'de>>(self, mut map: A) -> Result<Self::Value, A::Error> {
+                let mut entries = Vec::new();
+                while let Some((key, value)) = map.next_entry::<CompactString, f64>()? {
+                    entries.push((key, value));
+                }
+                Ok(entries.into_iter().collect())
+            }
+        }
+        deserializer.deserialize_map(Fields)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn exact_reservation_preserves_values_and_avoids_growth_during_known_inserts() {
+        let mut map = NumericFactorMap::from([
+            (Cow::Borrowed("amount"), 125.25),
+            (Cow::Borrowed("nullable_value"), f64::from_bits(0x7ff8000000000042)),
+            (Cow::Borrowed("signal"), -0.0),
+        ]);
+        let original = map.iter().map(|(key, value)| (key.to_string(), value.to_bits())).collect::<Vec<_>>();
+        map.reserve_exact(2);
+        assert_eq!(map.iter().map(|(key, value)| (key.to_string(), value.to_bits())).collect::<Vec<_>>(), original);
+        let buffer = map.entries.as_ptr();
+        map.insert(Cow::Borrowed("pre_close"), 12.5);
+        map.insert(Cow::Borrowed("no_limit"), 0.0);
+        assert_eq!(map.entries.as_ptr(), buffer);
+        assert_eq!(map.len(), 5);
+        assert_eq!(map["signal"].to_bits(), (-0.0_f64).to_bits());
+        assert_eq!(map["nullable_value"].to_bits(), 0x7ff8000000000042);
+        let before = map.entries.as_ptr();
+        map.reserve_exact(0);
+        assert_eq!(map.entries.as_ptr(), before);
+    }
+
+    #[test]
+    fn compact_keys_inline_dynamic_names_and_keep_long_static_storage() {
+        const LONG: &str = "a_long_static_factor_identifier_that_must_remain_borrowed";
+        let map = NumericFactorMap::from([
+            (Cow::Owned("dynamic_factor_20".to_owned()), -0.0),
+            (Cow::Borrowed(LONG), 1.0),
+        ]);
+        let cloned = map.clone();
+        let short = cloned.keys().find(|key| key.as_str() == "dynamic_factor_20").unwrap();
+        assert!(!short.is_heap_allocated());
+        let long = cloned.keys().find(|key| key.as_str() == LONG).unwrap();
+        assert_eq!(long.as_static_str(), Some(LONG));
+        assert_eq!(cloned["dynamic_factor_20"].to_bits(), (-0.0_f64).to_bits());
+        assert_eq!(std::mem::size_of::<(CompactString, f64)>(), std::mem::size_of::<(Cow<'static, str>, f64)>());
+    }
+
+    #[test]
+    fn long_dynamic_unicode_and_short_keys_keep_the_same_json_map() {
+        let entries = ["", "a", "a_field_longer_than_the_inline_string_capacity", "价格因子", "ths_up_days_stock"]
+            .into_iter().enumerate().map(|(index, key)| (Cow::Owned(key.to_string()), index as f64 + 0.25))
+            .collect::<BTreeMap<_, _>>();
+        let map = NumericFactorMap::from(entries.clone());
+        assert_eq!(serde_json::to_string(&map).unwrap(), serde_json::to_string(&entries).unwrap());
+        let decoded: NumericFactorMap = serde_json::from_str(&serde_json::to_string(&map).unwrap()).unwrap();
+        assert_eq!(decoded, map);
+        assert!(!decoded.keys().find(|key| key.as_str() == "ths_up_days_stock").unwrap().is_heap_allocated());
+    }
+
+    #[test]
+    fn updates_order_removal_and_values_match_tree_map() {
+        let mut flat = NumericFactorMap::new();
+        let mut tree = BTreeMap::new();
+        let mut seed = 71_u64;
+        for index in 0..10000 {
+            seed = seed.wrapping_mul(6364136223846793005).wrapping_add(1);
+            let key: Cow<'static, str> = Cow::Owned(format!("factor_{:04}", (seed >> 32) % 1000));
+            let value = (index as f64 - 5000.0) / 7.0;
+            if index % 11 == 0 {
+                assert_eq!(flat.remove(key.as_ref()), tree.remove(key.as_ref()));
+            } else {
+                assert_eq!(flat.insert(key.clone(), value), tree.insert(key, value));
+            }
+        }
+        assert_eq!(
+            flat.iter().map(|(key, value)| (key.as_str(), value)).collect::<Vec<_>>(),
+            tree.iter().map(|(key, value)| (key.as_ref(), value)).collect::<Vec<_>>()
+        );
+        flat.retain(|_, value| *value > 100.0);
+        tree.retain(|_, value| *value > 100.0);
+        assert_eq!(
+            flat.iter().map(|(key, value)| (key.as_str(), value)).collect::<Vec<_>>(),
+            tree.iter().map(|(key, value)| (key.as_ref(), value)).collect::<Vec<_>>()
+        );
+        assert_eq!(
+            std::mem::size_of::<NumericFactorMap>(),
+            std::mem::size_of_val(&tree)
+        );
+    }
+
+    #[test]
+    fn bulk_load_is_sorted_and_keeps_last_value_for_each_field() {
+        let input = vec![
+            (Cow::Borrowed("z"), 2.0),
+            (Cow::Borrowed("a"), 1.0),
+            (Cow::Borrowed("z"), 3.0),
+            (Cow::Borrowed("z"), 4.0),
+        ];
+        let flat: NumericFactorMap = input.clone().into_iter().collect();
+        let tree: BTreeMap<_, _> = input.into_iter().collect();
+        assert_eq!(
+            flat.iter().map(|(key, value)| (key.as_str(), value)).collect::<Vec<_>>(),
+            tree.iter().map(|(key, value)| (key.as_ref(), value)).collect::<Vec<_>>()
+        );
+        assert_eq!(flat["z"], 4.0);
+    }
+
+    #[test]
+    fn serialization_keeps_the_map_contract_and_precise_numbers() {
+        let input = [
+            (Cow::Borrowed("zero"), -0.0),
+            (Cow::Borrowed("tiny"), 1.0000000000000002),
+            (Cow::Borrowed("large"), 9.123456789123456e20),
+        ];
+        let flat = NumericFactorMap::from(input.clone());
+        let tree = BTreeMap::from(input);
+        let json = serde_json::to_string(&flat).unwrap();
+        assert_eq!(json, serde_json::to_string(&tree).unwrap());
+        let decoded: NumericFactorMap = serde_json::from_str(&json).unwrap();
+        for (key, value) in &flat {
+            assert_eq!(value.to_bits(), decoded[key.as_ref()].to_bits());
+        }
+        let duplicate: NumericFactorMap = serde_json::from_str(r#"{"x":1,"x":2}"#).unwrap();
+        assert_eq!(duplicate["x"], 2.0);
+    }
+
+    #[test]
+    fn clone_does_not_share_mutable_values() {
+        let original = NumericFactorMap::from([(Cow::Borrowed("signal"), 1.0)]);
+        let mut copy = original.clone();
+        *copy.get_mut("signal").unwrap() = 0.0;
+        copy.insert(Cow::Borrowed("other"), 2.0);
+        assert_eq!(original["signal"], 1.0);
+        assert!(!original.contains_key("other"));
+    }
+
+    #[test]
+    fn wide_batch_merge_matches_tree_and_preserves_old_key_ownership() {
+        let entries = (0..4096)
+            .map(|index| (Cow::Owned(format!("f_{index:05}")), index as f64))
+            .collect::<Vec<_>>();
+        let mut flat: NumericFactorMap = entries.clone().into_iter().collect();
+        let mut tree = BTreeMap::from_iter(entries);
+        flat.insert(Cow::Borrowed("shared"), -0.0);
+        tree.insert(Cow::Borrowed("shared"), -0.0);
+        let incoming = (2048..8192)
+            .rev()
+            .map(|index| (Cow::Owned(format!("f_{index:05}")), -(index as f64)))
+            .chain([(Cow::Owned("shared".to_owned()), 1.0)])
+            .collect::<Vec<_>>();
+        flat.extend(incoming.clone());
+        tree.extend(incoming);
+        assert_eq!(
+            flat.iter().map(|(key, value)| (key.as_str(), value)).collect::<Vec<_>>(),
+            tree.iter().map(|(key, value)| (key.as_ref(), value)).collect::<Vec<_>>()
+        );
+        assert_eq!(flat.keys().last().map(CompactString::as_str), Some("shared"));
+        assert!(!flat.keys().last().unwrap().is_heap_allocated());
+        flat.extend([(Cow::Borrowed("zz"), f64::NAN)]);
+        assert!(flat["zz"].is_nan());
+        flat.extend(std::iter::empty::<(CompactString, f64)>());
+        assert_eq!(flat.len(), tree.len() + 1);
+    }
+}

crates/fidc-core/src/pattern_context.rs

@@ -0,0 +1,465 @@
+//! Explicit reference identities and frozen rank universes shared by all daily runtimes.
+use crate::{
+    daily_patterns::{dataset_series, evaluate_with_context, PatternSpec, ResearchContext},
+    factor_events::{field_dependencies, Expr},
+    DataSet,
+};
+use chrono::NaiveDate;
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+use std::collections::{BTreeMap, BTreeSet};
+
+pub const CONTRACT: &str = "fidc_pattern_execution_context_v1";
+pub const CONTEXT_FIELDS: &[&str] = &[
+    "index_open",
+    "index_high",
+    "index_low",
+    "index_close",
+    "scope_rank",
+    "scope_percentile",
+    "scope_size",
+];
+const STOCK_FIELDS: &[&str] = &[
+    "open",
+    "high",
+    "low",
+    "close",
+    "volume",
+    "raw_open",
+    "raw_high",
+    "raw_low",
+    "raw_close",
+    "prev_close",
+    "amount",
+];
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct ExecutionContext {
+    pub contract: String,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub benchmark: Option<String>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub rank_expression: Option<Expr>,
+    #[serde(default, skip_serializing_if = "Vec::is_empty")]
+    pub rank_universe: Vec<String>,
+}
+
+fn valid_symbol(s: &str) -> bool {
+    let Some((code, market)) = s.split_once('.') else {
+        return false;
+    };
+    code.len() == 6
+        && code.bytes().all(|c| c.is_ascii_digit())
+        && matches!(market, "SH" | "SZ" | "BJ" | "CSI")
+}
+
+impl ExecutionContext {
+    pub fn fields(&self, expression: &Expr) -> BTreeSet<String> {
+        let mut fields = field_dependencies(expression);
+        if let Some(rank) = &self.rank_expression {
+            fields.extend(field_dependencies(rank));
+        }
+        fields
+    }
+    pub fn validate(&self, expression: &Expr) -> Result<(), String> {
+        if self.contract != CONTRACT {
+            return Err("pattern_context_contract_invalid".into());
+        }
+        let needed = field_dependencies(expression);
+        let ranked = needed.iter().any(|f| f.starts_with("scope_"));
+        if ranked != self.rank_expression.is_some() || !ranked && !self.rank_universe.is_empty() {
+            return Err("pattern_rank_expression_and_universe_required".into());
+        }
+        if ranked
+            && (self.rank_universe.len() < 2
+                || self.rank_universe.len() > 20_000
+                || self.rank_universe.iter().any(|s| !valid_symbol(s))
+                || self.rank_universe.iter().collect::<BTreeSet<_>>().len()
+                    != self.rank_universe.len())
+        {
+            return Err("pattern_rank_universe_invalid".into());
+        }
+        if let Some(rank) = &self.rank_expression {
+            let fields = field_dependencies(rank);
+            if fields
+                .iter()
+                .any(|f| !STOCK_FIELDS.contains(&f.as_str()) && !f.starts_with("index_"))
+            {
+                return Err("pattern_rank_expression_invalid_or_recursive".into());
+            }
+        }
+        let fields = self.fields(expression);
+        if fields
+            .iter()
+            .any(|f| !STOCK_FIELDS.contains(&f.as_str()) && !CONTEXT_FIELDS.contains(&f.as_str()))
+        {
+            return Err("pattern_context_unmapped_field".into());
+        }
+        let index = fields.iter().any(|f| f.starts_with("index_"));
+        if index != self.benchmark.is_some()
+            || self
+                .benchmark
+                .as_ref()
+                .is_some_and(|s| !valid_symbol(s) || s.ends_with(".BJ"))
+        {
+            return Err("pattern_reference_index_required".into());
+        }
+        if !index && !ranked {
+            return Err("pattern_unused_context".into());
+        }
+        Ok(())
+    }
+}
+
+pub fn build_dataset_context(
+    spec: &PatternSpec,
+    data: &DataSet,
+    date: NaiveDate,
+) -> Result<ResearchContext, String> {
+    let Some(config) = &spec.execution_context else {
+        return Ok(ResearchContext::default());
+    };
+    config.validate(
+        spec.expression
+            .as_ref()
+            .ok_or("pattern_context_requires_expression")?,
+    )?;
+    let days = data.calendar().trailing_days(date, spec.history_len());
+    if days.len() != spec.history_len() || days.last() != Some(&date) {
+        return Err("pattern_context_calendar_incomplete".into());
+    }
+    let needed = config.fields(spec.expression.as_ref().unwrap());
+    let mut context = ResearchContext::default();
+    if let Some(symbol) = &config.benchmark {
+        for name in needed.iter().filter(|f| f.starts_with("index_")) {
+            let values = days
+                .iter()
+                .map(|d| {
+                    let value = if let Some(b) = data.market(*d, symbol) {
+                        match name.as_str() {
+                            "index_open" => Some(b.open),
+                            "index_high" => Some(b.high),
+                            "index_low" => Some(b.low),
+                            "index_close" => Some(b.close),
+                            _ => None,
+                        }
+                    } else if let Some(b) = data.benchmark(*d).filter(|b| &b.benchmark == symbol) {
+                        match name.as_str() {
+                            "index_open" => Some(b.open),
+                            "index_close" => Some(b.close),
+                            _ => None,
+                        }
+                    } else {
+                        None
+                    };
+                    value
+                        .filter(|v| v.is_finite() && *v > 0.0)
+                        .map(Some)
+                        .ok_or_else(|| format!("pattern_reference_missing: {symbol} {d} {name}"))
+                })
+                .collect::<Result<Vec<_>, _>>()?;
+            context.common.insert(name.clone(), values);
+        }
+    }
+    if let Some(expression) = &config.rank_expression {
+        let mut input = spec.clone();
+        input.execution_context = None;
+        input.expression = Some(expression.clone());
+        let mut values = BTreeMap::new();
+        for symbol in &config.rank_universe {
+            let row = evaluate_with_context(
+                &input,
+                &days,
+                &dataset_series(data, &days, symbol),
+                &context.common,
+                true,
+            )?;
+            if let Some(reason) = row.exclusion {
+                return Err(format!("pattern_rank_member_incomplete: {symbol} {reason}"));
+            }
+            values.insert(
+                symbol.clone(),
+                serde_json::from_value::<Vec<Option<f64>>>(
+                    row.values["expression"]["values"].clone(),
+                )
+                .map_err(|e| e.to_string())?,
+            );
+        }
+        let ranks =
+            crate::factor_cross_section::rank_history(&days, &config.rank_universe, &values)?;
+        for symbol in &config.rank_universe {
+            let decode = |value: &Value| {
+                serde_json::from_value::<Vec<Option<f64>>>(value.clone()).map_err(|e| e.to_string())
+            };
+            context.by_symbol.insert(
+                symbol.clone(),
+                BTreeMap::from([
+                    ("scope_rank".into(), decode(&ranks["rank"][symbol])?),
+                    (
+                        "scope_percentile".into(),
+                        decode(&ranks["percentile"][symbol])?,
+                    ),
+                    (
+                        "scope_size".into(),
+                        vec![Some(config.rank_universe.len() as f64); days.len()],
+                    ),
+                ]),
+            );
+        }
+    }
+    Ok(context)
+}
+
+pub fn specs_in_value(value: &Value) -> Result<Vec<PatternSpec>, String> {
+    // A runner bundle also contains source/extract copies. Follow the same
+    // authoritative spec selection as the execution loader, not those copies.
+    if let Some(spec) = value.get("strategySpec").or_else(|| value.get("strategy_spec")) {
+        return specs_in_value(spec);
+    }
+    let mut specs = Vec::new();
+    match value {
+        Value::String(text) => specs.extend(crate::daily_patterns::expression_specs(text)?),
+        Value::Array(items) => {
+            for v in items {
+                specs.extend(specs_in_value(v)?);
+            }
+        }
+        Value::Object(items) => {
+            let typed_pool = items.get("stockPool").or_else(|| items.get("stock_pool"))
+                .is_some_and(Value::is_object);
+            for (key, v) in items {
+                // The executable pool already supplies decoded expressions.
+                // Its display/source serialization escapes those expressions
+                // one more time and is not another executable program.
+                if typed_pool && matches!(key.as_str(), "sourceCode" | "source_code") {
+                    continue;
+                }
+                specs.extend(specs_in_value(v)?);
+            }
+        }
+        _ => {}
+    }
+    Ok(specs)
+}
+
+pub fn required_symbols(value: &Value) -> Result<(BTreeSet<String>, BTreeSet<String>), String> {
+    let (mut indices, mut stocks) = (BTreeSet::new(), BTreeSet::new());
+    for spec in specs_in_value(value)? {
+        if let Some(context) = spec.execution_context {
+            if let Some(index) = context.benchmark {
+                indices.insert(index);
+            }
+            stocks.extend(context.rank_universe);
+        }
+    }
+    Ok((indices, stocks))
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::{BenchmarkSnapshot, DailyFactorSnapshot, DailyMarketSnapshot, Instrument};
+    use serde_json::json;
+    #[test]
+    fn structured_pool_conditions_are_not_rescanned_inside_serialized_source_code() {
+        let pattern = json!({"template":"expression","parameters":{"history_window":20},
+            "expression":{"kind":"operator","name":"GT","args":[{"kind":"field","name":"amount"},{"kind":"number","value":0}]}});
+        let expr = format!("pattern_signal({})", serde_json::to_string(&pattern.to_string()).unwrap());
+        let pool = json!({"schema_version":1,"pool_id":"fixture","version_id":"v1","members":[],
+            "allocation_policy":{},"timing_policy":{},"stop_take_policy":{},"out_of_pool_policy":"hold",
+            "exit_signals":[{"role":"risk_exit","when_expr":expr,"remaining_position_bps":5000,"reason":"fixture"}]});
+        let source = format!("stock_pool.config({pool})");
+        for (pool_key, source_key) in [("stockPool", "sourceCode"), ("stock_pool", "source_code")] {
+            let value = json!({pool_key:pool,source_key:source,"runtimeExpressions":{"trading":{"buyFilterExpr":expr}}});
+            assert_eq!(specs_in_value(&value).unwrap().len(), 2);
+            for wrapper in ["strategySpec", "strategy_spec"] {
+                let bundle = json!({wrapper:value,"strategy_source":{"source_code":source},
+                    "strategy_extract":{"parameters":{"source_code":source}}});
+                assert_eq!(specs_in_value(&bundle).unwrap().len(), 2);
+            }
+            let mut invalid = value.clone();
+            invalid[pool_key]["exit_signals"][0]["when_expr"] = json!("pattern_signal(not-json)");
+            assert!(specs_in_value(&invalid).is_err(), "invalid actual conditions must still fail");
+            assert!(specs_in_value(&json!({"strategySpec":invalid})).is_err());
+        }
+        assert_eq!(specs_in_value(&json!({"sourceCode":format!("risk.stop_loss({expr})")})).unwrap().len(),1);
+    }
+
+    #[test]
+    fn normalized_rule_does_not_turn_an_omitted_window_into_explicit_null() {
+        let expression:Expr=serde_json::from_value(json!({"kind":"operator","name":"GT","args":[{"kind":"field","name":"close"},{"kind":"number","value":1}]})).unwrap();
+        assert!(serde_json::to_value(expression).unwrap().get("window").is_none());
+    }
+    fn data(future: bool, reference: bool) -> DataSet {
+        let mut days = vec![
+            NaiveDate::from_ymd_opt(2026, 9, 4).unwrap(),
+            NaiveDate::from_ymd_opt(2026, 9, 7).unwrap(),
+            NaiveDate::from_ymd_opt(2026, 9, 8).unwrap(),
+        ];
+        if future {
+            days.push(NaiveDate::from_ymd_opt(2026, 9, 9).unwrap());
+        }
+        let symbols = vec!["000001.SZ", "000002.SZ", "000003.SZ"];
+        let mut instruments = symbols
+            .iter()
+            .map(|s| Instrument {
+                symbol: s.to_string(),
+                name: s.to_string(),
+                board: "SZ_MAIN".into(),
+                round_lot: 100,
+                listed_at: None,
+                delisted_at: None,
+                status: "active".into(),
+            })
+            .collect::<Vec<_>>();
+        if reference {
+            instruments.push(Instrument {
+                symbol: "399006.SZ".into(),
+                name: "reference".into(),
+                board: "INDEX".into(),
+                round_lot: 1,
+                listed_at: None,
+                delisted_at: None,
+                status: "active".into(),
+            });
+        }
+        let mut market = vec![];
+        let mut factors = vec![];
+        let mut benchmark = vec![];
+        for (i, d) in days.iter().enumerate() {
+            for (n, s) in symbols.iter().enumerate() {
+                let c = [
+                    [10., 12., 11., 1000.],
+                    [10., 11., 12., 1.],
+                    [10., 10., 13., 1.],
+                ][n][i];
+                market.push(DailyMarketSnapshot {
+                    date: *d,
+                    symbol: (*s).into(),
+                    timestamp: None,
+                    day_open: c,
+                    open: c,
+                    high: c,
+                    low: c,
+                    close: c,
+                    last_price: c,
+                    bid1: c,
+                    ask1: c,
+                    prev_close: 10.,
+                    volume: 100000,
+                    minute_volume: 0,
+                    bid1_volume: 10000,
+                    ask1_volume: 10000,
+                    trading_phase: None,
+                    paused: false,
+                    upper_limit: c * 2.,
+                    lower_limit: c / 2.,
+                    price_tick: 0.01,
+                });
+                factors.push(DailyFactorSnapshot {
+                    date: *d,
+                    symbol: (*s).into(),
+                    market_cap_bn: 1.,
+                    free_float_cap_bn: 1.,
+                    pe_ttm: 10.,
+                    turnover_ratio: None,
+                    effective_turnover_ratio: None,
+                    adjustment_factor_backward1: Some(1.),
+                    extra_factors: Default::default(),
+                });
+            }
+            if reference {
+                let mut row = market.last().unwrap().clone();
+                row.symbol = "399006.SZ".into();
+                row.open = 30.;
+                row.high = 30.;
+                row.low = 30.;
+                row.close = 30.;
+                market.push(row);
+            }
+            benchmark.push(BenchmarkSnapshot {
+                date: *d,
+                benchmark: "000300.SH".into(),
+                open: 4000.,
+                close: 4000.,
+                prev_close: 4000.,
+                volume: 1000,
+            });
+        }
+        DataSet::from_components(instruments, market, factors, vec![], benchmark).unwrap()
+    }
+    fn spec(rank: bool) -> PatternSpec {
+        let expression = if rank {
+            json!({"kind":"operator","name":"GT","args":[{"kind":"field","name":"scope_rank"},{"kind":"number","value":2}]})
+        } else {
+            json!({"kind":"operator","name":"LT","args":[{"kind":"field","name":"index_close"},{"kind":"number","value":100}]})
+        };
+        let context = if rank {
+            json!({"contract":CONTRACT,"rank_expression":{"kind":"operator","name":"PCT_CHANGE","window":1,"args":[{"kind":"field","name":"close"}]},"rank_universe":["000001.SZ","000002.SZ","000003.SZ"]})
+        } else {
+            json!({"contract":CONTRACT,"benchmark":"399006.SZ"})
+        };
+        serde_json::from_value::<PatternSpec>(json!({"template":"expression","parameters":{"history_window":3},"expression":expression,"execution_context":context})).unwrap().validate().unwrap()
+    }
+    #[test]
+    fn dataset_rank_is_full_scope_causal_and_equal_to_pure_cross_section() {
+        let spec = spec(true);
+        let date = NaiveDate::from_ymd_opt(2026, 9, 8).unwrap();
+        let original = build_dataset_context(&spec, &data(false, true), date).unwrap();
+        let future = build_dataset_context(&spec, &data(true, true), date).unwrap();
+        assert_eq!(original.by_symbol, future.by_symbol);
+        assert_eq!(original.by_symbol["000001.SZ"]["scope_rank"][2], Some(3.));
+        assert_eq!(original.by_symbol["000002.SZ"]["scope_rank"][2], Some(2.));
+        assert_eq!(original.by_symbol["000003.SZ"]["scope_rank"][2], Some(1.));
+        assert!(
+            crate::daily_patterns::evaluate_dataset(&spec, &data(false, true), date, "000001.SZ")
+                .unwrap()
+                .matched
+        );
+        let mut incomplete = data(false, true).snapshot_components();
+        incomplete.market.retain(|r| r.symbol != "000003.SZ");
+        let broken = DataSet::from_components(
+            incomplete.instruments,
+            incomplete.market,
+            incomplete.factors,
+            incomplete.candidates,
+            incomplete.benchmarks,
+        )
+        .unwrap();
+        assert!(build_dataset_context(&spec, &broken, date).is_err());
+    }
+    #[test]
+    fn reference_index_never_defaults_to_performance_benchmark() {
+        let spec = spec(false);
+        let date = NaiveDate::from_ymd_opt(2026, 9, 8).unwrap();
+        assert!(
+            crate::daily_patterns::evaluate_dataset(&spec, &data(false, true), date, "000001.SZ")
+                .unwrap()
+                .matched
+        );
+        assert!(build_dataset_context(&spec, &data(false, false), date)
+            .unwrap_err()
+            .contains("399006.SZ"));
+    }
+    #[test]
+    fn runtime_contract_rejects_missing_range_and_recursive_ranks() {
+        let mut missing = spec(true);
+        missing
+            .execution_context
+            .as_mut()
+            .unwrap()
+            .rank_universe
+            .clear();
+        assert!(missing.validate().is_err());
+        let mut recursive = spec(true);
+        recursive
+            .execution_context
+            .as_mut()
+            .unwrap()
+            .rank_expression = Some(Expr::Field {
+            name: "scope_rank".into(),
+        });
+        assert!(recursive.validate().is_err());
+    }
+}

crates/fidc-core/src/platform_runtime_schema.rs

@@ -227,6 +227,8 @@ const RUNTIME_HELPER_FUNCTIONS: &[&str] = &[
     "factor",
     "day_factor",
     "rolling_mean",
+    "pattern_signal",
+    "pattern_score",
     "rolling_mean_current",
     "rolling_max_current",
     "rolling_return_stddev_current",

crates/fidc-core/src/platform_stock_pool.rs

@@ -0,0 +1,273 @@
+//! Stock pools emit one frozen framework intent, not a lossy code-strategy translation.
+use super::*;
+use crate::stock_pool_execution as pool;
+use rust_decimal::Decimal;
+
+impl PlatformExprStrategy {
+    pub(super) fn stock_pool_decision(
+        &mut self,
+        ctx: &StrategyContext<'_>,
+    ) -> Result<StrategyDecision, BacktestError> {
+        let program = self
+            .config
+            .stock_pool
+            .as_ref()
+            .ok_or_else(|| BacktestError::Execution("stock_pool_program_missing".into()))?
+            .clone();
+        if !self.config.stop_loss_expr.trim().is_empty() || !self.config.take_profit_expr.trim().is_empty()
+            || self.config.position_target_rules.len() != program.exit_signals.len()
+            || self.config.position_target_rules.iter().zip(&program.exit_signals).any(|(compiled, frozen)|
+                compiled.when_expr != frozen.when_expr || compiled.remaining_position_bps != frozen.remaining_position_bps
+                    || compiled.reason != frozen.reason || compiled.stock_pool_role != frozen.role)
+        {
+            return Err(BacktestError::Execution("stock_pool_exit_roles_required: exit rules must remain bound to the frozen stock_pool program".into()));
+        }
+        let mut constraints = pool::stock_pool_constraints_from_configuration(
+            &program.allocation_policy,
+            &program.stop_take_policy,
+        )
+        .map_err(BacktestError::Execution)?;
+        if let Some(policy) = constraints
+            .market_timing_policy
+            .as_ref()
+            .filter(|policy| policy.enabled)
+        {
+            let before_close = !ctx.is_lagged_execution()
+                && ctx
+                    .active_datetime
+                    .is_some_and(|at| at.time() < NaiveTime::from_hms_opt(15, 0, 0).unwrap());
+            let as_of = if before_close {
+                ctx.data
+                    .previous_trading_date(ctx.decision_date, 1)
+                    .ok_or_else(|| {
+                        BacktestError::Execution(
+                            "market_timing_previous_completed_session_missing".into(),
+                        )
+                    })?
+            } else {
+                ctx.decision_date
+            };
+            let required = policy
+                .required_history()
+                .map_err(BacktestError::Execution)?;
+            let mut dates = ctx
+                .data
+                .calendar()
+                .iter()
+                .filter(|date| *date <= as_of)
+                .collect::<Vec<_>>();
+            if dates.len() < required {
+                return Err(BacktestError::Execution(format!(
+                    "market_timing_official_calendar_incomplete:required={required}:available={}",
+                    dates.len()
+                )));
+            }
+            dates = dates.split_off(dates.len() - required);
+            let index = policy.index_code.as_ref().expect("validated index policy");
+            let closes = dates
+                .iter()
+                .map(|date| {
+                    let row = ctx.data.market(*date, index).ok_or_else(|| {
+                        BacktestError::Execution(format!(
+                            "market_timing_completed_index_row_missing:{index}:{date}"
+                        ))
+                    })?;
+                    Ok(crate::stock_pool_index_policy::IndexClose {
+                        date: *date,
+                        close: row.close,
+                    })
+                })
+                .collect::<Result<Vec<_>, BacktestError>>()?;
+            constraints.market_timing_input =
+                Some(crate::stock_pool_index_policy::MarketTimingInput {
+                    index_code: index.clone(),
+                    as_of_date: as_of,
+                    official_dates: dates,
+                    closes,
+                });
+        }
+        let rule = pool::normalize_stock_pool_execution_rule_with_exit_roles(
+            Some(&program.timing_policy),
+            !self.config.buy_filter_expr.trim().is_empty(),
+            self.config.position_target_rules.iter().any(|rule| rule.stock_pool_role == pool::StockPoolExitRole::OrdinarySell),
+            self.config.position_target_rules.iter().any(|rule| rule.stock_pool_role == pool::StockPoolExitRole::RiskExit),
+        )
+        .map_err(BacktestError::Execution)?;
+        if self.config.in_skip_window(ctx.decision_date) {
+            return Ok(StrategyDecision::default());
+        }
+        let explicit_quote_condition = self.selection_quote_usage != StockFilterQuoteUsage::DailyOnly
+            || [self.config.buy_filter_expr.as_str(), self.config.stop_loss_expr.as_str(), self.config.take_profit_expr.as_str()]
+                .into_iter().chain(self.config.position_target_rules.iter().map(|rule|rule.when_expr.as_str()))
+                .any(|expression|Self::stock_filter_quote_usage_for_expr(expression)!=StockFilterQuoteUsage::DailyOnly);
+        if explicit_quote_condition && ctx.active_datetime.is_some_and(|at|at.time()<NaiveTime::from_hms_opt(15,0,0).unwrap()) {
+            for symbol in program.members.iter().map(|member|&member.symbol).chain(ctx.portfolio.positions().keys()) {
+                if ctx.data.instrument(symbol).is_some_and(|instrument|instrument.is_exchange_traded_fund()&&instrument.dated_market_absence_reason(ctx.execution_date).is_none())
+                    && self.scheduled_quote_at_time(ctx,ctx.execution_date,symbol,None).is_none()
+                {
+                    return Err(BacktestError::Execution(format!("etf_intraday_condition_evidence_missing:{symbol}; completed daily references cannot make minute/tick conditions true")));
+                }
+            }
+        }
+        let day = self.day_state(ctx, ctx.decision_date)?;
+        let (market_date, universe_date, factor_date) = self.selection_dates(ctx);
+        let (low, high) = self.market_cap_band(ctx, &day)?;
+        let (ranked, mut diagnostics, risk_decisions) = self.select_symbols(
+            ctx,
+            market_date,
+            universe_date,
+            factor_date,
+            &day,
+            low,
+            high,
+            usize::MAX,
+        )?;
+        let held = ctx
+            .portfolio
+            .positions()
+            .values()
+            .filter(|p| p.quantity > 0)
+            .map(|p| p.symbol.clone())
+            .collect::<BTreeSet<_>>();
+        if !self.config.buy_filter_expr.trim().is_empty() {
+            for symbol in &ranked {
+                let stock =
+                    self.stock_state_with_factor_date(ctx, market_date, factor_date, symbol)?;
+                if !self.eval_bool(ctx, &self.config.buy_filter_expr, &day, Some(&stock), None)? {
+                    constraints
+                        .buy_denials
+                        .insert(symbol.clone(), vec!["frozen_buy_condition_not_met".into()]);
+                }
+            }
+        }
+        for (role, targets) in self.current_position_target_rules_by_role(ctx, ctx.decision_date, factor_date, &day)? {
+            let output = match role { pool::StockPoolExitRole::OrdinarySell => &mut constraints.position_target_bps, pool::StockPoolExitRole::RiskExit => &mut constraints.independent_position_target_bps };
+            for (symbol, (bps, _)) in targets { output.insert(symbol, bps); }
+        }
+        let limit = constraints.target_holding_count.unwrap_or(ranked.len());
+        let final_symbols = ranked
+            .iter()
+            .take(limit)
+            .cloned()
+            .collect();
+        let generation = format!(
+            "stock-pool:{}:{}:{}",
+            program.pool_id,
+            program.version_id,
+            ctx.active_datetime
+                .map(|date| date.to_string())
+                .unwrap_or_else(|| ctx.decision_date.to_string())
+        );
+        let selection = pool::StockPoolSelection {
+            trade_date: ctx.decision_date,
+            requested_symbols: ranked.clone(),
+            normal_trading_symbols: ranked.clone(),
+            risk_eligible_symbols: ranked.clone(),
+            final_symbols,
+            exclusion_reasons: BTreeMap::new(),
+            inherited_from_generation: None,
+            explicit_empty: program.members.is_empty()
+                && self.config.candidate_symbols_by_date.is_empty(),
+            generation: Some(generation.clone()),
+        };
+        let by_symbol = program
+            .members
+            .iter()
+            .map(|member| (member.symbol.as_str(), member))
+            .collect::<BTreeMap<_, _>>();
+        let mut scope = ranked.clone();
+        // Kept rules are execution metadata, not additional selection candidates.
+        for symbol in held {
+            if by_symbol.contains_key(symbol.as_str()) && !scope.contains(&symbol) {
+                scope.push(symbol)
+            }
+        }
+        let allocation_weights = self
+            .config
+            .runtime_position_exposure_timeline
+            .allocation_weights_at(portfolio_loss_decision_at(ctx))
+            .or_else(|| {
+                self.config
+                    .position_exposure_timeline
+                    .allocation_weights_at(portfolio_loss_decision_at(ctx))
+            });
+        let members = scope
+            .iter()
+            .enumerate()
+            .map(|(index, symbol)| {
+                let mut member = by_symbol
+                    .get(symbol.as_str())
+                    .map(|member| (*member).clone())
+                    .unwrap_or_else(|| pool::StockPoolMemberSpec {
+                        symbol: symbol.clone(),
+                        requested_order: index as i32,
+                        recommendation_reason: String::new(),
+                        target_weight_bps: None,
+                        stop_loss: constraints.default_stop_loss,
+                        take_profit: constraints.default_take_profit,
+                    });
+                member.requested_order = index as i32;
+                if let Some(weights) = allocation_weights {
+                    member.target_weight_bps = Some(*weights.get(symbol).unwrap_or(&0));
+                }
+                member
+            })
+            .collect();
+        let (base_ratio, reserve_cash) =
+            pool::stock_pool_funding_from_configuration(&program.allocation_policy)
+                .map_err(BacktestError::Execution)?;
+        let base_exposure = self
+            .config
+            .position_exposure_timeline
+            .exposure_at(
+                portfolio_loss_decision_at(ctx),
+                ctx.execution_date,
+                &self.config.position_exposure_schedule,
+                f64::from(base_ratio) / 10000.,
+            )
+            .unwrap_or(f64::from(base_ratio) / 10000.);
+        let ratio = self
+            .config
+            .runtime_position_exposure_timeline
+            .exposure_at(
+                portfolio_loss_decision_at(ctx),
+                ctx.execution_date,
+                &self.config.runtime_position_exposure_schedule,
+                base_exposure,
+            )
+            .or(Some(base_exposure))
+            .map(|value| (value * 10000.).round() as i64)
+            .unwrap_or(i64::from(base_ratio));
+        let invest_ratio_bps = i32::try_from(ratio)
+            .ok()
+            .filter(|ratio| (0..=10000).contains(ratio))
+            .ok_or_else(|| BacktestError::Execution("stock_pool_invest_ratio_invalid".into()))?;
+        let signal_equity =
+            self.signal_visible_total_value(ctx, ctx.decision_date, ctx.is_lagged_execution());
+        let frozen_equity = signal_equity
+            .to_string()
+            .parse::<Decimal>()
+            .map_err(|_| BacktestError::Execution("stock_pool_signal_equity_invalid".into()))?;
+        diagnostics.push(format!("stock_pool_signal_frozen generation={generation} candidate_count={} frozen_equity={frozen_equity}",ranked.len()));
+        Ok(StrategyDecision {
+            order_intents: vec![OrderIntent::StockPool {
+                contract: Box::new(pool::FrozenStockPoolIntent {
+                    pool_id:program.pool_id.clone(),
+                    signal_date: ctx.decision_date,
+                    frozen_equity,
+                    selection,
+                    members,
+                    rule,
+                    constraints,
+                    invest_ratio_bps,
+                    reserve_cash,
+                    out_of_pool_policy: program.out_of_pool_policy,
+                    generation,
+                }),
+            }],
+            diagnostics,
+            risk_decisions,
+            ..Default::default()
+        })
+    }
+}

crates/fidc-core/src/portfolio.rs

@@ -60,6 +60,10 @@ pub struct PositionLot {
 pub struct Position {
     pub symbol: String,
     pub quantity: u32,
+    opened_date: Option<NaiveDate>,
+    last_buy_date: Option<NaiveDate>,
+    // ALV-compatible moving average execution price; partial sells do not rebase it.
+    pub average_price: f64,
     // ALV-compatible moving average including buy costs; partial sells do not rebase it.
     pub average_cost: f64,
     pub last_price: f64,
@@ -86,6 +90,9 @@ impl Position {
         Self {
             symbol: symbol.into(),
             quantity: 0,
+            opened_date: None,
+            last_buy_date: None,
+            average_price: 0.0,
             average_cost: 0.0,
             last_price: 0.0,
             realized_pnl: FixedMoney::ZERO,
@@ -111,6 +118,12 @@ impl Position {
         self.quantity == 0
     }
 
+    pub fn opened_date(&self) -> Option<NaiveDate> {
+        self.opened_date
+    }
+
+    pub fn last_buy_date(&self) -> Option<NaiveDate> { self.last_buy_date }
+
     pub fn buy(&mut self, date: NaiveDate, quantity: u32, price: f64) {
         self.buy_with_mark_price(date, quantity, price, price);
     }
@@ -125,13 +138,30 @@ impl Position {
         if quantity == 0 {
             return;
         }
+        let gross_amount = fixed_money_or_panic(execution_price * quantity as f64, "position buy gross amount");
+        self.buy_with_fixed_gross(date,quantity,execution_price,mark_price,gross_amount);
+    }
 
+    fn buy_with_fixed_gross(
+        &mut self,
+        date: NaiveDate,
+        quantity: u32,
+        execution_price: f64,
+        mark_price: f64,
+        gross_amount: FixedMoney,
+    ) {
         let previous_quantity = self.quantity;
-        let previous_average_cost = self.average_cost;
-        let gross_amount = fixed_money_or_panic(
-            execution_price * quantity as f64,
-            "position buy gross amount",
+        self.last_buy_date = Some(
+            self.last_buy_date
+                .map_or(date, |previous| previous.max(date)),
         );
+        if previous_quantity == 0 {
+            self.opened_date = Some(date);
+        } else if let Some(opened) = self.opened_date {
+            self.opened_date = Some(opened.min(date));
+        }
+        let previous_average_price = self.average_price;
+        let previous_average_cost = self.average_cost;
         self.lots.push(PositionLot {
             acquired_date: date,
             quantity,
@@ -146,6 +176,18 @@ impl Position {
             .day_buy_value
             .checked_add(gross_amount)
             .expect("fixed-point day buy value overflow");
+        if previous_quantity > 0
+            && previous_average_price.is_finite()
+            && previous_average_price > 0.0
+            && execution_price.is_finite()
+            && execution_price > 0.0
+        {
+            self.average_price = (previous_average_price * previous_quantity as f64
+                + execution_price * quantity as f64)
+                / self.quantity as f64;
+        } else {
+            self.average_price = execution_price;
+        }
         if previous_quantity > 0
             && previous_average_cost.is_finite()
             && previous_average_cost > 0.0
@@ -170,6 +212,20 @@ impl Position {
         quantity: u32,
         execution_price: f64,
         mark_price: f64,
+    ) -> Result<f64, String> {
+        if quantity > self.quantity {
+            return Err(format!("sell quantity {} exceeds current quantity {} for {}",quantity,self.quantity,self.symbol));
+        }
+        let total_proceeds = fixed_money(execution_price * quantity as f64,"position sell gross amount")?;
+        self.sell_with_fixed_gross(quantity,execution_price,mark_price,total_proceeds)
+    }
+
+    fn sell_with_fixed_gross(
+        &mut self,
+        quantity: u32,
+        execution_price: f64,
+        mark_price: f64,
+        total_proceeds: FixedMoney,
     ) -> Result<f64, String> {
         if quantity > self.quantity {
             return Err(format!(
@@ -178,14 +234,22 @@ impl Position {
             ));
         }
 
-        let total_proceeds = fixed_money(
-            execution_price * quantity as f64,
-            "position sell gross amount",
-        )?;
+        // A delayed receipt or a successor conversion can append an older
+        // acquisition after a newer lot. Deplete by actual acquisition date;
+        // stable ordering preserves same-day receipts and their attached fees.
+        if quantity > 0
+            && self
+                .lots
+                .windows(2)
+                .any(|pair| pair[0].acquired_date > pair[1].acquired_date)
+        {
+            self.lots.sort_by_key(|lot| lot.acquired_date);
+        }
         let mut remaining = quantity;
         let mut remaining_proceeds = total_proceeds;
         let mut realized = FixedMoney::ZERO;
         let mut realized_entry = FixedMoney::ZERO;
+        let average_price_before_sell = self.average_price;
         let average_cost_before_sell = self.average_cost;
 
         while remaining > 0 {
@@ -250,11 +314,20 @@ impl Position {
             .checked_add(total_proceeds)
             .ok_or_else(|| "fixed-point day sell value overflow".to_string())?;
         if self.quantity == 0 {
+            self.opened_date = None;
+            self.average_price = 0.0;
             self.recalculate_average_cost();
-        } else if average_cost_before_sell.is_finite() && average_cost_before_sell > 0.0 {
-            self.average_cost = average_cost_before_sell;
         } else {
-            self.recalculate_average_cost();
+            if average_price_before_sell.is_finite() && average_price_before_sell > 0.0 {
+                self.average_price = average_price_before_sell;
+            } else {
+                self.average_price = self.average_entry_price().unwrap_or(0.0);
+            }
+            if average_cost_before_sell.is_finite() && average_cost_before_sell > 0.0 {
+                self.average_cost = average_cost_before_sell;
+            } else {
+                self.recalculate_average_cost();
+            }
         }
         self.refresh_day_pnl();
         Ok(realized.to_f64())
@@ -298,6 +371,13 @@ impl Position {
         .to_f64()
     }
 
+    pub fn unrealized_average_price_pnl(&self) -> f64 {
+        if self.quantity == 0 || !self.average_price.is_finite() || self.average_price <= 0.0 {
+            return 0.0;
+        }
+        (self.last_price - self.average_price) * self.quantity as f64
+    }
+
     pub fn pnl(&self) -> f64 {
         self.realized_pnl.to_f64() + self.unrealized_pnl()
     }
@@ -421,9 +501,12 @@ impl Position {
     }
 
     pub fn holding_return(&self, price: f64) -> Option<f64> {
-        let Some(avg_price) = self.average_entry_price() else {
-            return None;
-        };
+        let avg_price = self
+            .average_price
+            .is_finite()
+            .then_some(self.average_price)
+            .filter(|value| *value > 0.0)
+            .or_else(|| self.average_entry_price())?;
         if avg_price <= 0.0 {
             None
         } else {
@@ -503,6 +586,7 @@ impl Position {
         if adjust_cost_basis {
             self.average_cost -= dividend_per_share;
         }
+        self.average_price -= dividend_per_share;
         self.last_price -= dividend_per_share;
         self.day_dividend_cash = self
             .day_dividend_cash
@@ -545,6 +629,11 @@ impl Position {
         self.lots = scaled_lots;
         self.quantity = self.lots.iter().map(|lot| lot.quantity).sum();
         self.last_price /= ratio;
+        if self.average_price.is_finite() && self.average_price > 0.0 {
+            self.average_price /= ratio;
+        } else {
+            self.average_price = self.average_entry_price().unwrap_or(0.0);
+        }
         if self.average_cost.is_finite() && self.average_cost > 0.0 {
             self.average_cost /= ratio;
         } else {
@@ -620,6 +709,31 @@ pub struct PortfolioState {
     cash_receivables: Vec<CashReceivable>,
     pending_cash_flows: Vec<PendingCashFlow>,
     day_sold_symbols: BTreeSet<String>,
+    // Observed holding conversions, never a catalog alias or a new target.
+    // Kept after a position becomes flat so an active date lock is not lost.
+    corporate_predecessors: BTreeMap<String, BTreeSet<String>>,
+    stock_pool_states: std::collections::BTreeMap<String,crate::stock_pool_state::StockPoolExecutionState>,
+}
+
+pub(crate) struct PortfolioCheckpoint {
+    saved: PortfolioState,
+    position_order: Option<Vec<String>>,
+}
+
+impl PortfolioCheckpoint {
+    pub(crate) fn restore(mut self, current: &mut PortfolioState) {
+        if let Some(order) = self.position_order.take() {
+            let mut positions = IndexMap::with_capacity(order.len());
+            for symbol in order {
+                let position = self.saved.positions.shift_remove(&symbol)
+                    .or_else(|| current.positions.shift_remove(&symbol))
+                    .expect("unchanged checkpoint position must remain present");
+                positions.insert(symbol, position);
+            }
+            self.saved.positions = positions;
+        }
+        *current = self.saved;
+    }
 }
 
 #[derive(Debug, Clone)]
@@ -641,9 +755,36 @@ pub(crate) struct SuccessorConversionOutcome {
 }
 
 impl PortfolioState {
+    /// Ordinary single-security orders need not duplicate every other lot.
+    /// Complex portfolio intents request the complete checkpoint instead.
+    pub(crate) fn checkpoint(&self, symbols: Option<&BTreeSet<String>>) -> PortfolioCheckpoint {
+        let Some(symbols) = symbols else {
+            return PortfolioCheckpoint { saved: self.clone(), position_order: None };
+        };
+        PortfolioCheckpoint {
+            saved: Self {
+                initial_cash: self.initial_cash, units: self.units, cash: self.cash,
+                external_cash_flow_total: self.external_cash_flow_total,
+                cash_liabilities: self.cash_liabilities, management_fee_rate: self.management_fee_rate,
+                management_fees: self.management_fees,
+                // prune_flat_positions can remove an unrelated zero row.
+                positions: self.positions.iter().filter(|(symbol, position)| position.quantity == 0 || symbols.contains(*symbol))
+                    .map(|(symbol, position)| (symbol.clone(), position.clone())).collect(),
+                cash_receivables: self.cash_receivables.clone(), pending_cash_flows: self.pending_cash_flows.clone(),
+                day_sold_symbols: self.day_sold_symbols.clone(), corporate_predecessors: self.corporate_predecessors.clone(),
+                stock_pool_states: self.stock_pool_states.clone(),
+            },
+            position_order: Some(self.positions.keys().cloned().collect()),
+        }
+    }
+
     pub fn new(initial_cash: f64) -> Self {
         let initial_cash = fixed_money(initial_cash, "initial cash")
             .expect("initial cash must be finite fixed-point money");
+        Self::from_fixed_initial_cash(initial_cash)
+    }
+
+    pub(crate) fn from_fixed_initial_cash(initial_cash: FixedMoney) -> Self {
         Self {
             initial_cash,
             units: initial_cash,
@@ -656,6 +797,8 @@ impl PortfolioState {
             cash_receivables: Vec::new(),
             pending_cash_flows: Vec::new(),
             day_sold_symbols: BTreeSet::new(),
+            corporate_predecessors: BTreeMap::new(),
+            stock_pool_states: std::collections::BTreeMap::new(),
         }
     }
 
@@ -665,6 +808,35 @@ impl PortfolioState {
         self.initial_cash.to_f64()
     }
 
+    pub(crate) fn initial_cash_fixed(&self) -> FixedMoney { self.initial_cash }
+
+    pub(crate) fn corporate_predecessors(&self, symbol: &str) -> impl Iterator<Item = &str> {
+        self.corporate_predecessors.get(symbol).into_iter().flatten().map(String::as_str)
+    }
+
+    pub(crate) fn observed_successor_symbols(&self) -> impl Iterator<Item = &str> {
+        self.corporate_predecessors.keys().map(String::as_str)
+    }
+
+    pub(crate) fn stock_pool_execution_state(&self,pool_id:&str)->crate::stock_pool_state::StockPoolExecutionState{
+        self.stock_pool_states.get(pool_id).cloned().unwrap_or_default()
+    }
+
+    pub(crate) fn set_stock_pool_execution_state(&mut self,pool_id:&str,state:crate::stock_pool_state::StockPoolExecutionState)->Result<(),String>{
+        if pool_id.trim().is_empty(){return Err("stock_pool_state_identity_missing".into())}
+        state.validate()?;self.stock_pool_states.insert(pool_id.into(),state);Ok(())
+    }
+
+    pub(crate) fn adjust_stock_pool_split(&mut self, symbol: &str, ratio: f64) -> Result<(), String> {
+        let ratio = rust_decimal::Decimal::from_str_exact(&ratio.to_string())
+            .map_err(|_| "stock_pool_execution_state_split_invalid".to_string())?;
+        let adjusted = self.stock_pool_states.iter()
+            .map(|(pool, state)| Ok((pool.clone(), state.adjust_for_split(symbol, ratio)?)))
+            .collect::<Result<BTreeMap<_, _>, String>>()?;
+        self.stock_pool_states = adjusted;
+        Ok(())
+    }
+
     pub fn initial_cash(&self) -> f64 {
         self.initial_cash.to_f64()
     }
@@ -677,6 +849,53 @@ impl PortfolioState {
         self.cash.to_f64()
     }
 
+    pub(crate) fn cash_fixed(&self) -> FixedMoney { self.cash }
+
+    pub(crate) fn financial_replay_identity(&self) -> serde_json::Value {
+        let positions = self.positions.iter().filter(|(_, position)| position.quantity > 0)
+            .map(|(symbol, position)| {
+                let mut lots = position.lots.iter().map(|lot| (lot.acquired_date, lot.quantity,
+                    lot.entry_value.to_decimal_string(), lot.cost_basis.to_decimal_string())).collect::<Vec<_>>();
+                lots.sort();
+                (symbol.clone(), serde_json::json!({"quantity":position.quantity,"lots":lots,
+                    "openedDate":position.opened_date,"lastBuyDate":position.last_buy_date}))
+            }).collect::<std::collections::BTreeMap<_, _>>();
+        let mut receivables = self.cash_receivables.iter().map(|row| (row.symbol.clone(), row.ex_date,
+            row.payable_date, fixed_money_or_panic(row.amount, "receivable identity").to_decimal_string(), row.reason.clone())).collect::<Vec<_>>();
+        receivables.sort();
+        let mut identity = serde_json::json!({"cash":self.cash.to_decimal_string(),"positions":positions,"receivables":receivables});
+        if !self.corporate_predecessors.is_empty() {
+            identity["corporatePredecessors"] = serde_json::json!(self.corporate_predecessors);
+        }
+        identity
+    }
+
+    pub(crate) fn financial_position_basis(&self, symbol: &str) -> FixedMoney {
+        self.positions.get(symbol).map_or(FixedMoney::ZERO, Position::total_cost_basis)
+    }
+
+    pub(crate) fn replace_replayed_financial_book(&mut self, mut replayed: PortfolioState) -> Result<(), String> {
+        if replayed.cash < FixedMoney::ZERO || replayed.initial_cash != self.initial_cash {
+            return Err("manual corporate replay changed initial capital or borrowed cash".into());
+        }
+        for (symbol, position) in &mut replayed.positions {
+            if let Some(current) = self.positions.get(symbol).filter(|current| current.quantity > 0) {
+                position.last_price = current.last_price;
+                position.refresh_day_pnl();
+            }
+        }
+        self.cash = replayed.cash;
+        self.positions = replayed.positions;
+        self.cash_receivables = replayed.cash_receivables;
+        self.day_sold_symbols = replayed.day_sold_symbols;
+        // Corrected actual receipts can prove a position was fully sold
+        // before conversion. Do not retain a now-disproved financial link.
+        self.corporate_predecessors = replayed.corporate_predecessors;
+        // Existing issued units, explicit cash-flow/financing facts, and task
+        // target state are observed controls, not counterfactual new orders.
+        Ok(())
+    }
+
     pub fn external_cash_flow_total(&self) -> f64 {
         self.external_cash_flow_total.to_f64()
     }
@@ -712,13 +931,117 @@ impl PortfolioState {
     }
 
     pub fn apply_cash_delta(&mut self, delta: f64) -> Result<(), String> {
+        self.apply_cash_delta_fixed(fixed_money(delta, "cash delta")?)
+    }
+
+    pub(crate) fn apply_cash_delta_fixed(&mut self, delta: FixedMoney) -> Result<(), String> {
         self.cash = self
             .cash
-            .checked_add(fixed_money(delta, "cash delta")?)
+            .checked_add(delta)
             .ok_or_else(|| "fixed-point cash overflow".to_string())?;
         Ok(())
     }
 
+    /// Apply one fully observed external fill atomically. Its money is already
+    /// quantized from the original decimal amounts, not from a float product.
+    pub(crate) fn apply_observed_manual_fill(
+        &mut self,
+        trade_date: NaiveDate,
+        symbol: &str,
+        side: crate::events::OrderSide,
+        quantity: u32,
+        price: f64,
+        mark_price: f64,
+        gross: FixedMoney,
+        fees: FixedMoney,
+    ) -> Result<FixedMoney, String> {
+        use crate::events::OrderSide;
+        if symbol.trim().is_empty()
+            || quantity == 0
+            || quantity > i32::MAX as u32
+            || !price.is_finite()
+            || price <= 0.
+            || !mark_price.is_finite()
+            || mark_price <= 0.
+            || gross <= FixedMoney::ZERO
+            || fees < FixedMoney::ZERO
+        {
+            return Err("invalid observed manual fill".into());
+        }
+        let mut position = self
+            .positions
+            .get(symbol)
+            .cloned()
+            .unwrap_or_else(|| Position::new(symbol));
+        let delta = match side {
+            OrderSide::Buy => gross.checked_add(fees).and_then(FixedMoney::checked_neg),
+            OrderSide::Sell => gross.checked_sub(fees),
+        }
+        .ok_or("manual fill cash delta overflow")?;
+        let next_cash = self
+            .cash
+            .checked_add(delta)
+            .filter(|cash| *cash >= FixedMoney::ZERO)
+            .ok_or("manual fill disagrees with shadow available cash")?;
+        let next_cost = position
+            .day_trade_cost
+            .checked_add(fees)
+            .ok_or("manual trade cost overflow")?;
+        match side {
+            OrderSide::Buy => {
+                let total_quantity = position
+                    .quantity
+                    .checked_add(quantity)
+                    .ok_or("manual position quantity overflow")?;
+                FixedMoney::from_f64(mark_price * f64::from(total_quantity))
+                    .ok_or("manual marked position value overflow")?;
+                position
+                    .day_buy_quantity
+                    .checked_add(quantity)
+                    .ok_or("manual daily buy quantity overflow")?;
+                position
+                    .day_trade_quantity_delta
+                    .checked_add(quantity as i32)
+                    .ok_or("manual daily quantity delta overflow")?;
+                position
+                    .day_buy_value
+                    .checked_add(gross)
+                    .ok_or("manual daily buy value overflow")?;
+                let total_basis = gross.checked_add(fees).ok_or("manual lot basis overflow")?;
+                position
+                    .total_cost_basis()
+                    .checked_add(total_basis)
+                    .ok_or("manual aggregate position basis overflow")?;
+                position.buy_with_fixed_gross(trade_date, quantity, price, mark_price, gross);
+                position
+                    .lots
+                    .last_mut()
+                    .ok_or("manual buy produced no lot")?
+                    .cost_basis = total_basis;
+                position.average_cost += fees.to_f64() / f64::from(position.quantity);
+            }
+            OrderSide::Sell => {
+                if quantity > position.sellable_qty(trade_date) {
+                    return Err("manual fill disagrees with shadow sellable holdings or T+1".into());
+                }
+                position
+                    .day_sell_quantity
+                    .checked_add(quantity)
+                    .ok_or("manual daily sell quantity overflow")?;
+                position
+                    .day_trade_quantity_delta
+                    .checked_sub(quantity as i32)
+                    .ok_or("manual daily quantity delta overflow")?;
+                position.sell_with_fixed_gross(quantity, price, mark_price, gross)?;
+            }
+        }
+        position.day_trade_cost = next_cost;
+        position.refresh_day_pnl();
+        self.positions.insert(symbol.to_string(), position);
+        self.cash = next_cash;
+        Ok(delta)
+    }
+
     pub fn prune_flat_positions(&mut self) {
         let mut sold_symbols = Vec::new();
         self.positions.retain(|symbol, position| {
@@ -1006,8 +1329,6 @@ impl PortfolioState {
             let unresolved_delisting = current_market_missing
                 && data.instrument(&position.symbol).is_some_and(|instrument| {
                     instrument.is_delisted_on_or_before(date)
-                        || (instrument.status.eq_ignore_ascii_case("delisted")
-                            && instrument.delisted_at.is_none())
                 });
             if unresolved_delisting {
                 position.last_price = 0.0;
@@ -1027,11 +1348,13 @@ impl PortfolioState {
                 position.refresh_day_pnl();
                 continue;
             }
+            let confirmed_pause = data.market(date, &position.symbol).is_some_and(|row| row.paused)
+                || data.candidate(date, &position.symbol).is_some_and(|row| row.is_paused);
             let price = data
                 .price(date, &position.symbol, field)
-                .or_else(|| data.price_on_or_before(date, &position.symbol, field))
+                .or_else(|| confirmed_pause.then(|| data.price_on_or_before(date, &position.symbol, field)).flatten())
                 .or_else(|| {
-                    (position.last_price.is_finite() && position.last_price > 0.0)
+                    (confirmed_pause && position.last_price.is_finite() && position.last_price > 0.0)
                         .then_some(position.last_price)
                 })
                 .ok_or_else(|| DataSetError::MissingSnapshot {
@@ -1128,8 +1451,11 @@ impl PortfolioState {
             .map(|position| {
                 let market_value = position.market_value();
                 let entry_average_cost = position
-                    .average_entry_price()
+                    .average_price
+                    .is_finite()
+                    .then_some(position.average_price)
                     .filter(|value| value.is_finite() && *value > 0.0)
+                    .or_else(|| position.average_entry_price())
                     .unwrap_or(position.average_cost);
                 HoldingSummary {
                     date,
@@ -1143,7 +1469,7 @@ impl PortfolioState {
                     } else {
                         0.0
                     },
-                    unrealized_pnl: position.unrealized_entry_pnl(),
+                    unrealized_pnl: position.unrealized_average_price_pnl(),
                     realized_pnl: position.realized_entry_pnl(),
                     pnl: position.entry_pnl(),
                     trading_pnl: position.trading_pnl,
@@ -1180,7 +1506,10 @@ impl PortfolioState {
         }
 
         let old_quantity = old_position.quantity;
+        let old_opened_date = old_position.opened_date;
+        let old_last_buy_date = old_position.last_buy_date;
         let last_price = old_position.last_price;
+        let old_average_price = old_position.average_price;
         let old_average_cost = old_position.average_cost;
         let realized_pnl = old_position.realized_pnl;
         let realized_entry_pnl = old_position.realized_entry_pnl;
@@ -1218,6 +1547,15 @@ impl PortfolioState {
             .entry(new_symbol.to_string())
             .or_insert_with(|| Position::new(new_symbol));
         let successor_quantity_before = successor.quantity;
+        successor.opened_date = match (successor.opened_date, old_opened_date) {
+            (Some(current), Some(previous)) => Some(current.min(previous)),
+            (current, previous) => current.or(previous),
+        };
+        successor.last_buy_date = match (successor.last_buy_date, old_last_buy_date) {
+            (Some(current), Some(previous)) => Some(current.max(previous)),
+            (current, previous) => current.or(previous),
+        };
+        let successor_average_price_before = successor.average_price;
         let successor_average_cost_before = successor.average_cost;
         successor.lots.extend(converted_lots);
         successor.quantity = successor.lots.iter().map(|lot| lot.quantity).sum();
@@ -1232,6 +1570,30 @@ impl PortfolioState {
         if converted_last_price > 0.0 {
             successor.last_price = converted_last_price;
         }
+        let converted_average_price = if old_average_price.is_finite()
+            && old_average_price > 0.0
+            && ratio.is_finite()
+            && ratio > 0.0
+        {
+            Some(old_average_price / ratio)
+        } else {
+            None
+        };
+        if let Some(converted_average_price) = converted_average_price {
+            if successor_quantity_before > 0
+                && successor_average_price_before.is_finite()
+                && successor_average_price_before > 0.0
+            {
+                successor.average_price = (successor_average_price_before
+                    * successor_quantity_before as f64
+                    + converted_average_price * converted_quantity as f64)
+                    / successor.quantity as f64;
+            } else {
+                successor.average_price = converted_average_price;
+            }
+        } else {
+            successor.average_price = successor.average_entry_price().unwrap_or(0.0);
+        }
         let converted_average_cost = if old_average_cost.is_finite()
             && old_average_cost > 0.0
             && ratio.is_finite()
@@ -1258,7 +1620,7 @@ impl PortfolioState {
         }
         successor.refresh_day_pnl();
 
-        Some(SuccessorConversionOutcome {
+        let outcome = SuccessorConversionOutcome {
             old_symbol: old_symbol_owned,
             new_symbol: new_symbol.to_string(),
             old_quantity,
@@ -1270,7 +1632,14 @@ impl PortfolioState {
             } else {
                 0.0
             },
-        })
+        };
+        if converted_quantity > 0 {
+            let mut predecessors = self.corporate_predecessors.get(old_symbol).cloned().unwrap_or_default();
+            predecessors.insert(old_symbol.to_owned());
+            predecessors.remove(new_symbol);
+            self.corporate_predecessors.entry(new_symbol.to_owned()).or_default().extend(predecessors);
+        }
+        Some(outcome)
     }
 
     fn sum_fixed_money(
@@ -1322,7 +1691,34 @@ mod tests {
         BenchmarkSnapshot, CandidateEligibility, DailyFactorSnapshot, DailyMarketSnapshot, DataSet,
         PriceField,
     };
-    use std::collections::BTreeMap;
+
+    #[test]
+    fn scoped_checkpoint_restores_order_flat_rows_and_progress_without_copying_untouched_lots() {
+        let date = NaiveDate::from_ymd_opt(2026,9,15).unwrap();
+        let mut portfolio = PortfolioState::new(10000.);
+        portfolio.position_mut("000001.SZ").buy(date,100,10.);
+        portfolio.position_mut("000002.SZ").buy(date,200,10.);
+        portfolio.position_mut("000003.SZ").buy(date,100,10.);
+        portfolio.position_mut("000003.SZ").sell(100,11.).unwrap();
+        let flat_realized = portfolio.position("000003.SZ").unwrap().realized_pnl;
+        let untouched_lots = portfolio.position("000002.SZ").unwrap().lots.as_ptr();
+        let before = portfolio.financial_replay_identity();
+        let order = portfolio.positions.keys().cloned().collect::<Vec<_>>();
+        let checkpoint = portfolio.checkpoint(Some(&BTreeSet::from(["000001.SZ".into(), "000004.SZ".into()])));
+        assert!(!checkpoint.saved.positions.contains_key("000002.SZ"));
+        portfolio.position_mut("000001.SZ").sell(100,11.).unwrap();
+        portfolio.prune_flat_positions();
+        portfolio.position_mut("000004.SZ").buy(date,100,12.);
+        portfolio.apply_cash_delta(100.).unwrap();
+        portfolio.stock_pool_states.insert("changed".into(), Default::default());
+        checkpoint.restore(&mut portfolio);
+        assert_eq!(portfolio.financial_replay_identity(), before);
+        assert_eq!(portfolio.positions.keys().cloned().collect::<Vec<_>>(), order);
+        assert_eq!(portfolio.position("000002.SZ").unwrap().lots.as_ptr(), untouched_lots);
+        assert_eq!(portfolio.position("000003.SZ").unwrap().realized_pnl, flat_realized);
+        assert!(portfolio.stock_pool_states.is_empty());
+        assert!(portfolio.position("000004.SZ").is_none());
+    }
 
     #[test]
     fn cash_ledger_accumulates_micro_yuan_exactly() {
@@ -1375,8 +1771,10 @@ mod tests {
         let realized = position.sell(100, 6.0).expect("partial FIFO sell");
 
         assert_eq!(position.quantity, 100);
+        assert!((position.average_price - 7.5).abs() < 1e-12);
         assert!((position.average_cost - 7.55).abs() < 1e-12);
         assert!((position.average_entry_price().unwrap() - 5.0).abs() < 1e-12);
+        assert!((position.unrealized_average_price_pnl() + 150.0).abs() < 1e-12);
         assert!((realized + 405.0).abs() < 1e-12);
         assert!((position.unrealized_pnl() - 95.0).abs() < 1e-12);
         assert!((position.pnl() + 310.0).abs() < 1e-12);
@@ -1409,6 +1807,7 @@ mod tests {
         position.record_buy_trade_cost(22_200, 100.0);
 
         assert!(position.average_cost > 5.66);
+        assert!((position.average_price - 5.66).abs() < 1e-12);
         assert!((position.average_entry_price().unwrap() - 5.66).abs() < 1e-12);
         assert!((position.holding_return(6.06).unwrap() - (6.06 / 5.66 - 1.0)).abs() < 1e-12);
     }
@@ -1430,6 +1829,7 @@ mod tests {
         position.sell(2700, 16.8331).expect("partial sell");
 
         assert_eq!(position.quantity, 100);
+        assert!((position.average_price - 18.94711428571429).abs() < 1e-12);
         assert!((position.average_cost - average_cost_before).abs() < 1e-12);
     }
 
@@ -1443,11 +1843,13 @@ mod tests {
 
         position.sell(100, 6.0).expect("partial sell");
         assert_eq!(position.quantity, 100);
+        assert!((position.average_price - 7.5).abs() < 1e-12);
         assert!((position.average_cost - 7.5).abs() < 1e-12);
         assert!((position.average_entry_price().unwrap() - 5.0).abs() < 1e-12);
 
         position.buy(date, 100, 5.0);
         assert_eq!(position.quantity, 200);
+        assert!((position.average_price - 6.25).abs() < 1e-12);
         assert!((position.average_cost - 6.25).abs() < 1e-12);
         assert!((position.average_entry_price().unwrap() - 5.0).abs() < 1e-12);
     }
@@ -1489,6 +1891,7 @@ mod tests {
         let cash = position.apply_cash_dividend_preserve_cost_basis(0.6);
 
         assert!((cash - 600.0).abs() < 1e-12);
+        assert!((position.average_price - 45.85).abs() < 1e-12);
         assert!((position.average_cost - cost_before).abs() < 1e-12);
         assert!((position.average_entry_price().unwrap() - (entry_before - 0.6)).abs() < 1e-12);
         assert!((position.last_price - 45.85).abs() < 1e-12);
@@ -1518,7 +1921,7 @@ mod tests {
                     vec![
                         DailyMarketSnapshot {
                             date: prev_date,
-                            symbol: "000001.SZ".to_string(),
+                            symbol: "000001.SZ".into(),
                             timestamp: None,
                             day_open: 10.0,
                             open: 10.0,
@@ -1541,7 +1944,7 @@ mod tests {
                         },
                         DailyMarketSnapshot {
                             date,
-                            symbol: "000001.SZ".to_string(),
+                            symbol: "000001.SZ".into(),
                             timestamp: None,
                             day_open: 10.5,
                             open: 10.5,
@@ -1565,17 +1968,18 @@ mod tests {
                     ],
                     vec![DailyFactorSnapshot {
                         date,
-                        symbol: "000001.SZ".to_string(),
+                        symbol: "000001.SZ".into(),
                         market_cap_bn: 50.0,
                         free_float_cap_bn: 45.0,
                         pe_ttm: 10.0,
                         turnover_ratio: Some(1.0),
                         effective_turnover_ratio: Some(1.0),
-                        extra_factors: BTreeMap::new(),
+                        adjustment_factor_backward1: None,
+                        extra_factors: Default::default(),
                     }],
                     vec![CandidateEligibility {
                         date,
-                        symbol: "000001.SZ".to_string(),
+                        symbol: "000001.SZ".into(),
                         is_st: false,
                         is_star_st: false,
                         is_new_listing: false,
@@ -1630,7 +2034,7 @@ mod tests {
                     }],
                     vec![DailyMarketSnapshot {
                         date,
-                        symbol: "000001.SZ".to_string(),
+                        symbol: "000001.SZ".into(),
                         timestamp: None,
                         day_open: 10.5,
                         open: 10.5,
@@ -1653,17 +2057,18 @@ mod tests {
                     }],
                     vec![DailyFactorSnapshot {
                         date,
-                        symbol: "000001.SZ".to_string(),
+                        symbol: "000001.SZ".into(),
                         market_cap_bn: 50.0,
                         free_float_cap_bn: 45.0,
                         pe_ttm: 10.0,
                         turnover_ratio: Some(1.0),
                         effective_turnover_ratio: Some(1.0),
-                        extra_factors: BTreeMap::new(),
+                        adjustment_factor_backward1: None,
+                        extra_factors: Default::default(),
                     }],
                     vec![CandidateEligibility {
                         date,
-                        symbol: "000001.SZ".to_string(),
+                        symbol: "000001.SZ".into(),
                         is_st: false,
                         is_star_st: false,
                         is_new_listing: false,
@@ -1695,7 +2100,7 @@ mod tests {
     }
 
     #[test]
-    fn portfolio_carries_last_price_when_position_market_row_is_missing() {
+    fn portfolio_missing_market_requires_formal_suspension_before_carrying_price() {
         let prev_date = NaiveDate::from_ymd_opt(2025, 5, 26).unwrap();
         let missing_date = NaiveDate::from_ymd_opt(2025, 5, 27).unwrap();
         let mut portfolio = PortfolioState::new(10_000.0);
@@ -1715,7 +2120,7 @@ mod tests {
             }],
             vec![DailyMarketSnapshot {
                 date: prev_date,
-                symbol: "601028.SH".to_string(),
+                symbol: "601028.SH".into(),
                 timestamp: None,
                 day_open: 10.2,
                 open: 10.2,
@@ -1753,9 +2158,23 @@ mod tests {
             .update_prices(prev_date, &dataset, PriceField::Close)
             .expect("previous close");
         portfolio.begin_trading_day();
-        portfolio
+        let error = portfolio
             .update_prices(missing_date, &dataset, PriceField::Close)
-            .expect("missing current row should carry previous close");
+            .expect_err("unclassified missing current price must not be filled from history");
+        assert!(error.to_string().contains("601028.SH"));
+        let paused_dataset = DataSet::from_components(
+            vec![dataset.instrument("601028.SH").unwrap().clone()],
+            vec![dataset.market(prev_date, "601028.SH").unwrap().clone()],
+            Vec::new(),
+            vec![crate::data::CandidateEligibility {
+                date: missing_date, symbol: "601028.SH".into(), is_st: false, is_star_st: false,
+                is_new_listing: false, is_paused: true, allow_buy: false, allow_sell: false,
+                is_kcb: false, is_one_yuan: false, risk_level_code: None,
+            }],
+            vec![dataset.benchmark(prev_date).unwrap().clone()],
+        ).unwrap();
+        portfolio.update_prices(missing_date, &paused_dataset, PriceField::Close)
+            .expect("dated suspension permits keeping the last known valuation, not creating a fill");
 
         let position = portfolio.position("601028.SH").expect("position");
         assert!((position.last_price - 10.3).abs() < 1e-6);
@@ -1784,7 +2203,7 @@ mod tests {
             vec![
                 DailyMarketSnapshot {
                     date: buy_date,
-                    symbol: symbol.to_string(),
+                    symbol: symbol.into(),
                     timestamp: None,
                     day_open: 2.99,
                     open: 2.99,
@@ -1807,7 +2226,7 @@ mod tests {
                 },
                 DailyMarketSnapshot {
                     date: next_date,
-                    symbol: symbol.to_string(),
+                    symbol: symbol.into(),
                     timestamp: None,
                     day_open: 3.03,
                     open: 3.03,

crates/fidc-core/src/portfolio_loss.rs

@@ -0,0 +1,517 @@
+//! Causal portfolio-loss state, independent of market-data and order adapters.
+
+use std::collections::VecDeque;
+
+use chrono::{DateTime, FixedOffset, NaiveDate, Utc};
+use serde::{Deserialize, Serialize};
+use thiserror::Error;
+
+const STATE_SCHEMA: &str = "fidc.portfolio-loss-state/v1";
+const MAX_OBSERVATIONS: usize = 120;
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase", deny_unknown_fields)]
+pub struct PortfolioLossConfig {
+    pub lookback: usize,
+    pub loss_trigger: f64,
+    pub floor_exposure: f64,
+    pub cooldown_trading_days: usize,
+}
+
+impl PortfolioLossConfig {
+    pub fn validate(&self) -> Result<(), PortfolioLossError> {
+        if !matches!(self.lookback, 10 | 20 | 40 | 60)
+            || !self.loss_trigger.is_finite()
+            || !(0.02..=0.30).contains(&self.loss_trigger)
+            || !self.floor_exposure.is_finite()
+            || !(0.0..=1.0).contains(&self.floor_exposure)
+            || !(1..=120).contains(&self.cooldown_trading_days)
+        {
+            return Err(PortfolioLossError::InvalidConfig);
+        }
+        Ok(())
+    }
+}
+
+/// Finalized portfolio accounting, not a market close used as a proxy for NAV.
+/// Unit NAV must already exclude external deposits and withdrawals.
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase", deny_unknown_fields)]
+pub struct ClosedPortfolioSession {
+    pub date: NaiveDate,
+    pub previous_session_date: Option<NaiveDate>,
+    pub available_at: DateTime<Utc>,
+    pub start_unit_nav: f64,
+    pub end_unit_nav: f64,
+    pub start_gross_exposure: f64,
+    pub end_gross_exposure: f64,
+    pub source_sha256: String,
+}
+
+impl ClosedPortfolioSession {
+    fn validate(&self) -> Result<(), PortfolioLossError> {
+        let earliest = self.date.and_hms_opt(7, 30, 0).unwrap().and_utc();
+        if [self.start_unit_nav, self.end_unit_nav]
+            .iter()
+            .any(|value| !value.is_finite() || *value <= 0.0)
+            || [self.start_gross_exposure, self.end_gross_exposure]
+                .iter()
+                .any(|value| !value.is_finite() || *value < 0.0)
+            || self
+                .previous_session_date
+                .is_some_and(|date| date >= self.date)
+            || self.available_at < earliest
+            || self.source_sha256.len() != 64
+            || !self
+                .source_sha256
+                .bytes()
+                .all(|byte| byte.is_ascii_digit() || (b'a'..=b'f').contains(&byte))
+        {
+            return Err(PortfolioLossError::InvalidObservation);
+        }
+        self.unit_return()?;
+        Ok(())
+    }
+
+    fn unit_return(&self) -> Result<Option<f64>, PortfolioLossError> {
+        let gross = self.start_gross_exposure.max(self.end_gross_exposure);
+        if gross <= 1e-12 {
+            return Ok(None);
+        }
+        let value = (self.end_unit_nav / self.start_unit_nav - 1.0) / gross;
+        if !value.is_finite() {
+            return Err(PortfolioLossError::InvalidObservation);
+        }
+        Ok(Some(value))
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase", deny_unknown_fields)]
+pub struct PortfolioLossDecision {
+    pub execution_date: NaiveDate,
+    pub observed_through: Option<NaiveDate>,
+    pub observation_count: usize,
+    pub trailing_unit_return: Option<f64>,
+    pub threshold_breached: bool,
+    pub newly_triggered: bool,
+    pub risk_off: bool,
+    pub cooldown_before: usize,
+    pub cooldown_after: usize,
+    pub target_exposure: f64,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase", deny_unknown_fields)]
+pub struct PortfolioLossState {
+    schema_version: String,
+    config: PortfolioLossConfig,
+    started_on: NaiveDate,
+    observations: VecDeque<ClosedPortfolioSession>,
+    last_session: Option<ClosedPortfolioSession>,
+    cooldown_remaining: usize,
+    trigger_count: usize,
+    last_decision: Option<PortfolioLossDecision>,
+}
+
+#[derive(Debug, Error, PartialEq, Eq)]
+pub enum PortfolioLossError {
+    #[error("invalid portfolio loss configuration")]
+    InvalidConfig,
+    #[error("invalid finalized portfolio session observation")]
+    InvalidObservation,
+    #[error("portfolio loss state does not match its frozen configuration")]
+    StateMismatch,
+    #[error("portfolio session history is missing, reordered or corrected")]
+    SessionDiscontinuity,
+    #[error("portfolio loss observation is not visible at the decision")]
+    ObservationNotVisible,
+    #[error("portfolio loss decisions must follow trading-session order")]
+    DecisionOrder,
+}
+
+impl PortfolioLossState {
+    pub fn new(
+        config: PortfolioLossConfig,
+        started_on: NaiveDate,
+    ) -> Result<Self, PortfolioLossError> {
+        config.validate()?;
+        Ok(Self {
+            schema_version: STATE_SCHEMA.to_owned(),
+            config,
+            started_on,
+            observations: VecDeque::new(),
+            last_session: None,
+            cooldown_remaining: 0,
+            trigger_count: 0,
+            last_decision: None,
+        })
+    }
+
+    /// Validation is required after deserialization; a JSON hash alone is not
+    /// account/generation authorization, which belongs to the state owner.
+    pub fn validate(&self, expected: &PortfolioLossConfig) -> Result<(), PortfolioLossError> {
+        expected.validate()?;
+        if self.schema_version != STATE_SCHEMA
+            || &self.config != expected
+            || self.observations.len() > MAX_OBSERVATIONS
+            || self.cooldown_remaining >= expected.cooldown_trading_days
+        {
+            return Err(PortfolioLossError::StateMismatch);
+        }
+        let mut previous = None;
+        for item in &self.observations {
+            item.validate()?;
+            if item.date < self.started_on
+                || previous.is_some_and(|date| item.date <= date)
+                || item.unit_return()?.is_none()
+            {
+                return Err(PortfolioLossError::StateMismatch);
+            }
+            previous = Some(item.date);
+        }
+        if let Some(last) = &self.last_session {
+            last.validate()?;
+            if last.date < self.started_on
+                || previous.is_some_and(|date| date > last.date)
+                || (last.unit_return()?.is_some() && self.observations.back() != Some(last))
+            {
+                return Err(PortfolioLossError::StateMismatch);
+            }
+        } else if !self.observations.is_empty() {
+            return Err(PortfolioLossError::StateMismatch);
+        }
+        if let Some(decision) = &self.last_decision {
+            let breached = decision
+                .trailing_unit_return
+                .is_some_and(|value| value <= -expected.loss_trigger);
+            let triggered = decision.cooldown_before == 0 && breached;
+            let after = if decision.cooldown_before > 0 {
+                decision.cooldown_before - 1
+            } else if triggered {
+                expected.cooldown_trading_days - 1
+            } else {
+                0
+            };
+            if decision.execution_date < self.started_on
+                || decision
+                    .observed_through
+                    .is_some_and(|date| date >= decision.execution_date)
+                || !decision.target_exposure.is_finite()
+                || !(0.0..=1.0).contains(&decision.target_exposure)
+                || decision
+                    .trailing_unit_return
+                    .is_some_and(|value| !value.is_finite())
+                || decision.cooldown_after != self.cooldown_remaining
+                || decision.observation_count > MAX_OBSERVATIONS
+                || decision.cooldown_before >= expected.cooldown_trading_days
+                || decision.threshold_breached != breached
+                || decision.newly_triggered != triggered
+                || decision.risk_off != (decision.cooldown_before > 0 || triggered)
+                || decision.cooldown_after != after
+                || decision.trailing_unit_return.is_some()
+                    != (decision.observation_count >= expected.lookback)
+                || self.trigger_count
+                    > (decision.execution_date - self.started_on).num_days() as usize + 1
+            {
+                return Err(PortfolioLossError::StateMismatch);
+            }
+        } else if self.cooldown_remaining != 0 || self.trigger_count != 0 {
+            return Err(PortfolioLossError::StateMismatch);
+        }
+        Ok(())
+    }
+
+    /// Exact duplicate delivery is idempotent. Historical corrections require
+    /// explicit reconciliation instead of changing an already-used window.
+    pub fn observe(&mut self, session: ClosedPortfolioSession) -> Result<bool, PortfolioLossError> {
+        self.validate(&self.config)?;
+        session.validate()?;
+        if self.last_session.as_ref() == Some(&session) {
+            return Ok(false);
+        }
+        let previous_date = self.last_session.as_ref().map(|value| value.date);
+        if session.date < self.started_on
+            || session.previous_session_date != previous_date
+            || previous_date.is_some_and(|date| session.date <= date)
+            || (previous_date.is_none() && session.date != self.started_on)
+            || self
+                .last_session
+                .as_ref()
+                .is_some_and(|last| session.start_unit_nav != last.end_unit_nav)
+        {
+            return Err(PortfolioLossError::SessionDiscontinuity);
+        }
+        if session.unit_return()?.is_some() {
+            self.observations.push_back(session.clone());
+            if self.observations.len() > MAX_OBSERVATIONS {
+                self.observations.pop_front();
+            }
+        }
+        self.last_session = Some(session);
+        Ok(true)
+    }
+
+    pub fn decide(
+        &mut self,
+        execution_date: NaiveDate,
+        previous_completed_session: Option<NaiveDate>,
+        decision_at: DateTime<Utc>,
+        risk_on_exposure: f64,
+    ) -> Result<PortfolioLossDecision, PortfolioLossError> {
+        self.validate(&self.config)?;
+        if !risk_on_exposure.is_finite() || !(0.0..=1.0).contains(&risk_on_exposure) {
+            return Err(PortfolioLossError::InvalidConfig);
+        }
+        if execution_date < self.started_on
+            || previous_completed_session.is_some_and(|date| date >= execution_date)
+            || decision_at
+                .with_timezone(&FixedOffset::east_opt(8 * 3600).unwrap())
+                .date_naive()
+                != execution_date
+            || self
+                .last_decision
+                .as_ref()
+                .is_some_and(|last| execution_date < last.execution_date)
+        {
+            return Err(PortfolioLossError::DecisionOrder);
+        }
+        if let Some(last) = &self.last_session {
+            if last.date >= execution_date || last.available_at > decision_at {
+                return Err(PortfolioLossError::ObservationNotVisible);
+            }
+            if Some(last.date) != previous_completed_session {
+                return Err(PortfolioLossError::SessionDiscontinuity);
+            }
+        } else if execution_date != self.started_on {
+            return Err(PortfolioLossError::SessionDiscontinuity);
+        }
+        if let Some(cached) = self
+            .last_decision
+            .as_mut()
+            .filter(|last| last.execution_date == execution_date)
+        {
+            cached.target_exposure = if cached.risk_off {
+                self.config.floor_exposure.min(risk_on_exposure)
+            } else {
+                risk_on_exposure
+            };
+            return Ok(cached.clone());
+        }
+        let trailing = if self.observations.len() >= self.config.lookback {
+            let start = self.observations.len() - self.config.lookback;
+            let mut growth = 1.0;
+            for item in self.observations.iter().skip(start) {
+                growth *=
+                    (1.0 + item.unit_return()?.expect("nonzero exposure observation")).max(0.0);
+            }
+            let result = growth - 1.0;
+            if !result.is_finite() {
+                return Err(PortfolioLossError::InvalidObservation);
+            }
+            Some(result)
+        } else {
+            None
+        };
+        let breached = trailing.is_some_and(|value| value <= -self.config.loss_trigger);
+        let before = self.cooldown_remaining;
+        let triggered = before == 0 && breached;
+        let risk_off = before > 0 || triggered;
+        let after = if before > 0 {
+            before - 1
+        } else if triggered {
+            self.config.cooldown_trading_days - 1
+        } else {
+            0
+        };
+        let decision = PortfolioLossDecision {
+            execution_date,
+            observed_through: self.last_session.as_ref().map(|value| value.date),
+            observation_count: self.observations.len(),
+            trailing_unit_return: trailing,
+            threshold_breached: breached,
+            newly_triggered: triggered,
+            risk_off,
+            cooldown_before: before,
+            cooldown_after: after,
+            target_exposure: if risk_off {
+                self.config.floor_exposure.min(risk_on_exposure)
+            } else {
+                risk_on_exposure
+            },
+        };
+        self.cooldown_remaining = after;
+        self.trigger_count += usize::from(triggered);
+        self.last_decision = Some(decision.clone());
+        Ok(decision)
+    }
+
+    pub fn last_session(&self) -> Option<&ClosedPortfolioSession> {
+        self.last_session.as_ref()
+    }
+    pub fn last_decision(&self) -> Option<&PortfolioLossDecision> {
+        self.last_decision.as_ref()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use chrono::{Duration, TimeZone};
+
+    fn date(day: i64) -> NaiveDate {
+        NaiveDate::from_ymd_opt(2023, 1, 3).unwrap() + Duration::days(day)
+    }
+    fn time(day: i64, hour: u32) -> DateTime<Utc> {
+        Utc.from_utc_datetime(&date(day).and_hms_opt(hour, 0, 0).unwrap())
+    }
+    fn config() -> PortfolioLossConfig {
+        PortfolioLossConfig {
+            lookback: 10,
+            loss_trigger: 0.05,
+            floor_exposure: 0.2,
+            cooldown_trading_days: 3,
+        }
+    }
+    fn session(day: i64, start: f64, end: f64, gross: f64) -> ClosedPortfolioSession {
+        ClosedPortfolioSession {
+            date: date(day),
+            previous_session_date: (day > 0).then(|| date(day - 1)),
+            available_at: time(day, 8),
+            start_unit_nav: start,
+            end_unit_nav: end,
+            start_gross_exposure: gross,
+            end_gross_exposure: gross,
+            source_sha256: "a".repeat(64),
+        }
+    }
+
+    #[test]
+    fn restart_is_exact_and_duplicate_decisions_do_not_consume_cooldown() {
+        let mut state = PortfolioLossState::new(config(), date(0)).unwrap();
+        let mut nav = 1.0;
+        for day in 0..10 {
+            let end = nav * 0.994;
+            state.observe(session(day, nav, end, 1.0)).unwrap();
+            nav = end;
+        }
+        let first = state
+            .decide(date(10), Some(date(9)), time(10, 1), 0.9)
+            .unwrap();
+        assert!(first.newly_triggered);
+        assert_eq!(first.cooldown_after, 2);
+        let serialized = serde_json::to_string(&state).unwrap();
+        let mut restored: PortfolioLossState = serde_json::from_str(&serialized).unwrap();
+        restored.validate(&config()).unwrap();
+        assert_eq!(
+            first,
+            restored
+                .decide(date(10), Some(date(9)), time(10, 1), 0.9)
+                .unwrap()
+        );
+        let lowered = restored
+            .decide(date(10), Some(date(9)), time(10, 2), 0.1)
+            .unwrap();
+        assert_eq!(lowered.target_exposure, 0.1);
+        assert_eq!(lowered.cooldown_after, 2);
+        for day in 10..15 {
+            let end = nav * 1.01;
+            let row = session(day, nav, end, 0.2);
+            state.observe(row.clone()).unwrap();
+            restored.observe(row).unwrap();
+            nav = end;
+            assert_eq!(
+                state
+                    .decide(date(day + 1), Some(date(day)), time(day + 1, 1), 0.9)
+                    .unwrap(),
+                restored
+                    .decide(date(day + 1), Some(date(day)), time(day + 1, 1), 0.9)
+                    .unwrap()
+            );
+        }
+    }
+
+    #[test]
+    fn refuses_future_missing_corrected_and_incomplete_accounting() {
+        let mut state = PortfolioLossState::new(config(), date(0)).unwrap();
+        let first = session(0, 1.0, 0.99, 1.0);
+        assert!(state.observe(first.clone()).unwrap());
+        assert!(!state.observe(first.clone()).unwrap());
+        let original = state.clone();
+        let mut changed = first;
+        changed.end_unit_nav = 0.98;
+        assert_eq!(
+            state.observe(changed),
+            Err(PortfolioLossError::SessionDiscontinuity)
+        );
+        assert_eq!(state, original);
+        assert_eq!(
+            state.decide(date(0), None, time(0, 1), 0.9),
+            Err(PortfolioLossError::ObservationNotVisible)
+        );
+        assert_eq!(
+            state.decide(date(2), Some(date(1)), time(2, 1), 0.9),
+            Err(PortfolioLossError::SessionDiscontinuity)
+        );
+        let mut late = PortfolioLossState::new(config(), date(0)).unwrap();
+        let mut delayed = session(0, 1.0, 0.99, 1.0);
+        delayed.available_at = time(2, 1);
+        late.observe(delayed).unwrap();
+        assert_eq!(
+            late.decide(date(1), Some(date(0)), time(1, 1), 0.9),
+            Err(PortfolioLossError::ObservationNotVisible)
+        );
+        let mut invalid = session(1, 0.99, 1.0, 1.0);
+        invalid.end_unit_nav = f64::NAN;
+        assert_eq!(
+            state.observe(invalid),
+            Err(PortfolioLossError::InvalidObservation)
+        );
+    }
+
+    #[test]
+    fn cash_sessions_preserve_continuity_without_inventing_returns() {
+        let mut state = PortfolioLossState::new(config(), date(0)).unwrap();
+        for day in 0..20 {
+            state.observe(session(day, 1.0, 1.0, 0.0)).unwrap();
+        }
+        let decision = state
+            .decide(date(20), Some(date(19)), time(20, 1), 0.9)
+            .unwrap();
+        assert_eq!(decision.observation_count, 0);
+        assert_eq!(decision.trailing_unit_return, None);
+        assert_eq!(decision.target_exposure, 0.9);
+        assert_eq!(state.last_session().unwrap().date, date(19));
+    }
+
+    #[test]
+    fn restored_state_rejects_changed_policy_and_forged_cooldown() {
+        let state = PortfolioLossState::new(config(), date(0)).unwrap();
+        let mut changed = config();
+        changed.floor_exposure = 0.5;
+        assert_eq!(
+            state.validate(&changed),
+            Err(PortfolioLossError::StateMismatch)
+        );
+        let mut forged = state.clone();
+        forged.cooldown_remaining = 1;
+        assert_eq!(
+            forged.validate(&config()),
+            Err(PortfolioLossError::StateMismatch)
+        );
+    }
+
+    #[test]
+    fn nav_serialization_preserves_float_bits() {
+        let mut seed = 0xabcddcba12345678_u64;
+        for _ in 0..2000 {
+            seed ^= seed << 13;
+            seed ^= seed >> 7;
+            seed ^= seed << 17;
+            let value = 0.01 + (seed as f64 / u64::MAX as f64) * 9.99;
+            let serialized = serde_json::to_string(&value).unwrap();
+            let restored: f64 = serde_json::from_str(&serialized).unwrap();
+            assert_eq!(value.to_bits(), restored.to_bits());
+        }
+    }
+}

crates/fidc-core/src/position_exposure.rs

@@ -0,0 +1,536 @@
+//! Dated manual adjustments are ordered facts; restoring is not a 100% target.
+use chrono::{DateTime, NaiveDate, Utc};
+use serde::{Deserialize, Serialize};
+use std::collections::{BTreeMap, BTreeSet};
+
+#[derive(Debug, Clone, PartialEq, Eq, Deserialize, Serialize)]
+#[serde(tag = "action", rename_all = "snake_case", deny_unknown_fields)]
+pub enum PositionExposureAction {
+    Scale {
+        #[serde(rename = "requestedBps", alias = "requested_bps")]
+        requested_bps: i32,
+    },
+    Set {
+        #[serde(rename = "targetExposureBps", alias = "target_exposure_bps")]
+        target_exposure_bps: i32,
+    },
+    Restore,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct PositionExposureEvent {
+    #[serde(alias = "event_id")]
+    pub event_id: String,
+    pub sequence: u64,
+    #[serde(alias = "effective_at")]
+    pub effective_at: DateTime<Utc>,
+    #[serde(
+        default,
+        skip_serializing_if = "Option::is_none",
+        alias = "allocation_weights_bps"
+    )]
+    pub allocation_weights_bps: Option<BTreeMap<String, i32>>,
+    #[serde(flatten)]
+    pub action: PositionExposureAction,
+}
+
+#[derive(Debug, Clone, Default)]
+pub struct PositionExposureTimeline {
+    events: BTreeMap<(DateTime<Utc>, u64), (PositionExposureAction, Option<BTreeMap<String, i32>>)>,
+}
+
+impl PositionExposureTimeline {
+    pub fn from_events(events: &[PositionExposureEvent]) -> Result<Self, String> {
+        let mut result = Self::default();
+        let mut ids = BTreeSet::new();
+        let mut sequences = BTreeSet::new();
+        for event in events {
+            if event.event_id.trim().is_empty() || !ids.insert(event.event_id.as_str()) {
+                return Err("position exposure event id is missing or duplicated".into());
+            }
+            if event.sequence == 0 || !sequences.insert(event.sequence) {
+                return Err("position exposure event sequence must be positive and unique".into());
+            }
+            if let PositionExposureAction::Scale { requested_bps } = event.action
+                && !(0..=10000).contains(&requested_bps)
+            {
+                return Err("position exposure scale must be between 0 and 10000 bps".into());
+            }
+            if let PositionExposureAction::Set {
+                target_exposure_bps,
+            } = event.action
+                && !(0..=10_000).contains(&target_exposure_bps)
+            {
+                return Err("position exposure target must be between 0 and 10000 bps".into());
+            }
+            if let Some(weights) = &event.allocation_weights_bps {
+                let target = match event.action {
+                    PositionExposureAction::Set {
+                        target_exposure_bps,
+                    } => target_exposure_bps,
+                    PositionExposureAction::Scale { requested_bps } => requested_bps,
+                    PositionExposureAction::Restore => {
+                        return Err(
+                            "restoring strategy allocation cannot carry manual weights".into()
+                        );
+                    }
+                };
+                validate_allocation_weights(weights, target)?;
+            }
+            result.events.insert(
+                (event.effective_at, event.sequence),
+                (event.action.clone(), event.allocation_weights_bps.clone()),
+            );
+        }
+        Ok(result)
+    }
+
+    /// Legacy day-level contracts remain day-level; never invent intraday times.
+    pub fn exposure_at(
+        &self,
+        at: DateTime<Utc>,
+        execution_date: NaiveDate,
+        legacy: &BTreeMap<NaiveDate, f64>,
+        strategy_exposure: f64,
+    ) -> Option<f64> {
+        match self
+            .events
+            .range(..=(at, u64::MAX))
+            .next_back()
+            .map(|(_, (action, _))| action)
+        {
+            Some(PositionExposureAction::Scale { requested_bps }) => {
+                Some(strategy_exposure * f64::from(*requested_bps) / 10000.)
+            }
+            Some(PositionExposureAction::Set {
+                target_exposure_bps,
+            }) => Some(f64::from(*target_exposure_bps) / 10_000.),
+            Some(PositionExposureAction::Restore) => None,
+            None => legacy
+                .range(..=execution_date)
+                .next_back()
+                .map(|(_, value)| *value),
+        }
+    }
+
+    pub fn scale_at(&self, at: DateTime<Utc>) -> Option<i32> {
+        match self
+            .events
+            .range(..=(at, u64::MAX))
+            .next_back()
+            .map(|(_, (action, _))| action)
+        {
+            Some(PositionExposureAction::Scale { requested_bps }) => Some(*requested_bps),
+            _ => None,
+        }
+    }
+
+    pub fn allocation_weights_at(&self, at: DateTime<Utc>) -> Option<&BTreeMap<String, i32>> {
+        self.events
+            .range(..=(at, u64::MAX))
+            .next_back()
+            .and_then(|(_, (_, weights))| weights.as_ref())
+    }
+}
+
+pub fn validate_allocation_weights(
+    weights: &BTreeMap<String, i32>,
+    exposure_bps: i32,
+) -> Result<(), String> {
+    if !(0..=10000).contains(&exposure_bps) || weights.len() > 10000 {
+        return Err("invalid allocation exposure or weight count".into());
+    }
+    for (symbol, weight) in weights {
+        if !(0..=10000).contains(weight)
+            || !symbol.rsplit_once('.').is_some_and(|(code, exchange)| {
+                code.len() == 6
+                    && code.bytes().all(|byte| byte.is_ascii_digit())
+                    && matches!(exchange, "SH" | "SZ" | "BJ")
+            })
+        {
+            return Err(
+                "allocation weights require canonical stock/ETF symbols and 0..10000 bps".into(),
+            );
+        }
+    }
+    if (weights.is_empty() && exposure_bps != 0)
+        || (!weights.is_empty() && weights.values().sum::<i32>() != 10000)
+    {
+        return Err("manual allocation weights must total 10000 bps; only a zero exposure may have no weights".into());
+    }
+    Ok(())
+}
+
+/// Scale new buys and desired targets without weakening sell/reduction or
+/// cancellation instructions. Prices, subscriptions and cash flows are intact.
+pub fn scale_explicit_intent(
+    mut intent: crate::OrderIntent,
+    bps: i32,
+    open_orders: &[crate::OpenOrderView],
+) -> Result<Option<crate::OrderIntent>, String> {
+    use crate::OrderIntent as I;
+    if !(0..=10000).contains(&bps) {
+        return Err("position scale out of range".into());
+    }
+    if bps == 10000 {
+        return Ok(Some(intent));
+    }
+    if let I::WithTimeInForce {
+        intent: inner,
+        time_in_force,
+    } = intent
+    {
+        return Ok(
+            scale_explicit_intent(*inner, bps, open_orders)?.map(|intent| I::WithTimeInForce {
+                intent: Box::new(intent),
+                time_in_force,
+            }),
+        );
+    }
+    let integer = |value: i32| ((i64::from(value) * i64::from(bps)) / 10000) as i32;
+    let amount = |value: f64, target: bool| -> Result<f64, String> {
+        if !value.is_finite() || (target && value < 0.) {
+            return Err("position override received an invalid original amount".into());
+        }
+        Ok(if value > 0. {
+            value * f64::from(bps) / 10000.
+        } else {
+            value
+        })
+    };
+    match &mut intent {
+        I::Shares { quantity, .. }
+        | I::LimitShares { quantity, .. }
+        | I::Lots { lots: quantity, .. }
+        | I::LimitLots { lots: quantity, .. } => {
+            if *quantity > 0 {
+                *quantity = integer(*quantity);
+                if *quantity == 0 {
+                    return Ok(None);
+                }
+            }
+        }
+        I::TargetShares {
+            target_quantity, ..
+        }
+        | I::LimitTargetShares {
+            target_quantity, ..
+        } => {
+            if *target_quantity < 0 {
+                return Err("position override received a negative target quantity".into());
+            }
+            *target_quantity = integer(*target_quantity);
+        }
+        I::Value { value, .. }
+        | I::LimitValue { value, .. }
+        | I::AlgoValue { value, .. }
+        | I::Percent { percent: value, .. }
+        | I::LimitPercent { percent: value, .. }
+        | I::AlgoPercent { percent: value, .. } => {
+            *value = amount(*value, false)?;
+            if *value == 0. {
+                return Ok(None);
+            }
+        }
+        I::TargetValue { target_value, .. }
+        | I::LimitTargetValue { target_value, .. }
+        | I::TimedTargetValue { target_value, .. }
+        | I::TargetPercent {
+            target_percent: target_value,
+            ..
+        }
+        | I::LimitTargetPercent {
+            target_percent: target_value,
+            ..
+        } => {
+            *target_value = amount(*target_value, true)?;
+        }
+        I::TargetPortfolioSmart { target_weights, .. } => {
+            for value in target_weights.values_mut() {
+                *value = amount(*value, true)?;
+            }
+        }
+        I::ModifyOrder {
+            order_id,
+            new_total_quantity: Some(quantity),
+            ..
+        } => {
+            let order = open_orders
+                .iter()
+                .find(|order| order.order_id == *order_id)
+                .ok_or("position override cannot resolve the order being modified")?;
+            if order.side == crate::OrderSide::Buy && *quantity > order.requested_quantity {
+                let extra = u64::from(*quantity - order.requested_quantity) * bps as u64 / 10000;
+                *quantity = order.requested_quantity + extra as u32;
+            }
+        }
+        I::Futures { .. } | I::StockPool { .. } => {
+            return Err("manual equity scaling cannot transform this intent kind".into());
+        }
+        I::ModifyOrder { .. }
+        | I::CancelOrder { .. }
+        | I::CancelSymbol { .. }
+        | I::CancelAll { .. }
+        | I::UpdateUniverse { .. }
+        | I::Subscribe { .. }
+        | I::Unsubscribe { .. }
+        | I::DepositWithdraw { .. }
+        | I::FinanceRepay { .. }
+        | I::SetManagementFeeRate { .. } => {}
+        I::WithTimeInForce { .. } => unreachable!("wrapper handled first"),
+    }
+    Ok(Some(intent))
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use serde_json::json;
+
+    #[test]
+    fn scalar_preserves_strategy_risk_off_and_restore_keeps_original_exposure() {
+        let at = DateTime::parse_from_rfc3339("2026-01-05T09:30:00+08:00")
+            .unwrap()
+            .with_timezone(&Utc);
+        let event = PositionExposureEvent {
+            event_id: "scale".into(),
+            sequence: 1,
+            effective_at: at,
+            allocation_weights_bps: None,
+            action: PositionExposureAction::Scale {
+                requested_bps: 5000,
+            },
+        };
+        let timeline = PositionExposureTimeline::from_events(&[event.clone()]).unwrap();
+        assert_eq!(
+            timeline.exposure_at(at, at.date_naive(), &BTreeMap::new(), 0.),
+            Some(0.)
+        );
+        assert_eq!(
+            timeline.exposure_at(at, at.date_naive(), &BTreeMap::new(), 0.2),
+            Some(0.1)
+        );
+        let restored = PositionExposureEvent {
+            event_id: "restore".into(),
+            sequence: 2,
+            effective_at: at,
+            allocation_weights_bps: None,
+            action: PositionExposureAction::Restore,
+        };
+        let timeline = PositionExposureTimeline::from_events(&[event, restored]).unwrap();
+        assert_eq!(
+            timeline
+                .exposure_at(
+                    at,
+                    at.date_naive(),
+                    &BTreeMap::from([(at.date_naive(), 1.)]),
+                    0.2
+                )
+                .unwrap_or(0.2),
+            0.2
+        );
+    }
+
+    #[test]
+    fn allocation_is_dated_and_any_later_scalar_or_restore_clears_it() {
+        let at = DateTime::parse_from_rfc3339("2026-09-14T10:00:00+08:00")
+            .unwrap()
+            .with_timezone(&Utc);
+        let weights = BTreeMap::from([("000001.SZ".into(), 3000), ("510300.SH".into(), 7000)]);
+        let event = PositionExposureEvent {
+            event_id: "allocation".into(),
+            sequence: 1,
+            effective_at: at,
+            action: PositionExposureAction::Set {
+                target_exposure_bps: 8000,
+            },
+            allocation_weights_bps: Some(weights.clone()),
+        };
+        let timeline = PositionExposureTimeline::from_events(&[event.clone()]).unwrap();
+        assert!(
+            timeline
+                .allocation_weights_at(at - chrono::Duration::seconds(1))
+                .is_none()
+        );
+        assert_eq!(timeline.allocation_weights_at(at), Some(&weights));
+        for action in [
+            PositionExposureAction::Set {
+                target_exposure_bps: 5000,
+            },
+            PositionExposureAction::Restore,
+        ] {
+            let next = PositionExposureEvent {
+                event_id: "new".into(),
+                sequence: 2,
+                effective_at: at + chrono::Duration::seconds(1),
+                action,
+                allocation_weights_bps: None,
+            };
+            assert!(
+                PositionExposureTimeline::from_events(&[event.clone(), next])
+                    .unwrap()
+                    .allocation_weights_at(at + chrono::Duration::seconds(1))
+                    .is_none()
+            );
+        }
+        assert!(
+            validate_allocation_weights(&BTreeMap::from([("000001.SZ".into(), 9000)]), 5000)
+                .is_err()
+        );
+        assert!(validate_allocation_weights(&BTreeMap::new(), 1).is_err());
+        assert!(validate_allocation_weights(&BTreeMap::new(), 0).is_ok());
+    }
+
+    #[test]
+    fn explicit_equity_targets_and_buys_scale_but_sales_cashflows_and_prices_do_not() {
+        use crate::OrderIntent as I;
+        let symbol = "000001.SZ".to_string();
+        let reason = "fixture".to_string();
+        for bps in [0, 3000, 5000, 10000] {
+            let ratio = f64::from(bps) / 10000.;
+            let buy = I::LimitShares {
+                symbol: symbol.clone(),
+                quantity: 1000,
+                limit_price: 12.345,
+                reason: reason.clone(),
+            };
+            let scaled = scale_explicit_intent(buy, bps, &[]).unwrap();
+            if bps == 0 {
+                assert!(scaled.is_none())
+            } else if let Some(I::LimitShares {
+                quantity,
+                limit_price,
+                ..
+            }) = scaled
+            {
+                assert_eq!(quantity, (1000. * ratio) as i32);
+                assert_eq!(limit_price, 12.345);
+            } else {
+                panic!("wrong intent")
+            }
+            let sell = I::Shares {
+                symbol: symbol.clone(),
+                quantity: -1000,
+                reason: reason.clone(),
+            };
+            assert!(matches!(
+                scale_explicit_intent(sell, bps, &[]).unwrap(),
+                Some(I::Shares {
+                    quantity: -1000,
+                    ..
+                })
+            ));
+            let clear = I::TargetShares {
+                symbol: symbol.clone(),
+                target_quantity: 0,
+                reason: reason.clone(),
+            };
+            assert!(matches!(
+                scale_explicit_intent(clear, bps, &[]).unwrap(),
+                Some(I::TargetShares {
+                    target_quantity: 0,
+                    ..
+                })
+            ));
+            let target = I::TargetPercent {
+                symbol: symbol.clone(),
+                target_percent: 0.2,
+                reason: reason.clone(),
+            };
+            if let Some(I::TargetPercent { target_percent, .. }) =
+                scale_explicit_intent(target, bps, &[]).unwrap()
+            {
+                assert!((target_percent - 0.2 * ratio).abs() < 1e-12)
+            } else {
+                panic!("wrong target")
+            }
+            let deposit = I::DepositWithdraw {
+                amount: 123.456,
+                receiving_days: 2,
+                reason: reason.clone(),
+            };
+            assert!(matches!(
+                scale_explicit_intent(deposit, bps, &[]).unwrap(),
+                Some(I::DepositWithdraw {
+                    amount: 123.456,
+                    receiving_days: 2,
+                    ..
+                })
+            ));
+        }
+        assert!(
+            scale_explicit_intent(
+                I::TargetValue {
+                    symbol,
+                    target_value: f64::NAN,
+                    reason
+                },
+                0,
+                &[]
+            )
+            .is_err()
+        );
+    }
+
+    #[test]
+    fn same_day_adjustments_restore_and_future_events_keep_their_own_times() {
+        let events: Vec<PositionExposureEvent> = serde_json::from_value(json!([
+            {"eventId":"first","sequence":1,"effectiveAt":"2026-09-10T10:00:00+08:00","action":"set","targetExposureBps":0},
+            {"eventId":"second","sequence":2,"effectiveAt":"2026-09-10T13:00:00+08:00","action":"set","targetExposureBps":5000},
+            {"eventId":"restore","sequence":3,"effectiveAt":"2026-09-10T14:00:00+08:00","action":"restore"},
+            {"eventId":"future","sequence":4,"effectiveAt":"2026-09-11T10:00:00+08:00","action":"set","targetExposureBps":1000}
+        ])).unwrap();
+        let timeline = PositionExposureTimeline::from_events(&events).unwrap();
+        let date = NaiveDate::from_ymd_opt(2026, 9, 10).unwrap();
+        let legacy = BTreeMap::from([(date.pred_opt().unwrap(), 0.8)]);
+        for (time, expected) in [
+            ("09:30:00", Some(0.8)),
+            ("10:00:00", Some(0.)),
+            ("12:59:59", Some(0.)),
+            ("13:00:00", Some(0.5)),
+            ("14:00:00", None),
+            ("15:00:00", None),
+        ] {
+            let at = DateTime::parse_from_rfc3339(&format!("2026-09-10T{time}+08:00"))
+                .unwrap()
+                .with_timezone(&Utc);
+            assert_eq!(
+                timeline.exposure_at(at, date, &legacy, 0.2),
+                expected,
+                "{time}"
+            );
+        }
+        let next_open = DateTime::parse_from_rfc3339("2026-09-11T09:30:00+08:00")
+            .unwrap()
+            .with_timezone(&Utc);
+        assert_eq!(
+            timeline.exposure_at(next_open, date.succ_opt().unwrap(), &legacy, 0.2),
+            None
+        );
+    }
+
+    #[test]
+    fn rejects_unknown_actions_duplicate_identity_and_invalid_bps() {
+        let valid = json!({"eventId":"one","sequence":1,"effectiveAt":"2026-09-10T09:30:00+08:00","action":"set","targetExposureBps":5000});
+        for (key, value) in [
+            ("action", json!("other")),
+            ("effectiveAt", json!("2026-09-10 09:30:00")),
+            ("targetExposureBps", json!(null)),
+        ] {
+            let mut invalid = valid.clone();
+            invalid[key] = value;
+            assert!(serde_json::from_value::<PositionExposureEvent>(invalid).is_err());
+        }
+        let event: PositionExposureEvent = serde_json::from_value(valid).unwrap();
+        assert!(PositionExposureTimeline::from_events(&[event.clone(), event.clone()]).is_err());
+        let mut invalid = event.clone();
+        invalid.action = PositionExposureAction::Set {
+            target_exposure_bps: 10001,
+        };
+        assert!(PositionExposureTimeline::from_events(&[invalid]).is_err());
+        let mut duplicate = event.clone();
+        duplicate.event_id = "two".into();
+        assert!(PositionExposureTimeline::from_events(&[event, duplicate]).is_err());
+    }
+}

crates/fidc-core/src/risk_control.rs

@@ -3,10 +3,10 @@ use std::collections::BTreeSet;
 use chrono::NaiveDate;
 use serde::{Deserialize, Serialize};
 
+use crate::OrderSide;
 use crate::data::{CandidateEligibility, DailyMarketSnapshot, PriceField};
 use crate::instrument::Instrument;
 use crate::portfolio::Position;
-use crate::OrderSide;
 
 #[derive(Debug, Clone, Copy, Default)]
 pub struct ChinaAShareRiskControl;
@@ -76,6 +76,26 @@ impl Default for StaticRiskRuleConfig {
     }
 }
 
+impl StaticRiskRuleConfig {
+    pub(crate) fn selection_checks_enabled(&self) -> bool {
+        (self.blacklist_enabled && !self.blacklisted_symbols.is_empty())
+            || self.selection_state_checks_enabled()
+    }
+
+    fn selection_state_checks_enabled(&self) -> bool {
+        self.reject_st_selection
+            || self.reject_star_st_selection
+            || self.reject_paused_selection
+            || self.reject_inactive_selection
+            || self.reject_new_listing_selection
+            || self.reject_kcb_selection
+            || self.reject_bjse_selection
+            || self.reject_one_yuan_selection
+            || self.reject_upper_limit_selection
+            || self.reject_lower_limit_selection
+    }
+}
+
 #[derive(Debug, Clone, Copy, PartialEq, Serialize, Deserialize)]
 pub struct TradingConstraintConfig {
     /// Shared execution limits.  These fields intentionally use the same
@@ -138,6 +158,16 @@ pub struct FidcRiskDecisionAudit {
 }
 
 impl FidcRiskDecisionAudit {
+    pub fn rejected_buy_plan(date: NaiveDate, symbol: &str, reason: &str) -> Self {
+        Self {
+            date, symbol: symbol.into(), scope: RiskCheckScope::Buy,
+            stage: "buy_planning".into(), accepted: false,
+            rule_code: reason.into(), reason: reason.into(),
+            config_version: Some("inline_risk_policy".into()), data_epoch: date.to_string(),
+            selection_batch_id: None, order_id: None,
+        }
+    }
+
     pub fn rejected_selection(
         date: NaiveDate,
         symbol: impl Into<String>,
@@ -208,14 +238,8 @@ impl ChinaAShareRiskControl {
         {
             return Some("inactive_or_delisted");
         }
-        let status = instrument.status.trim().to_ascii_lowercase();
-        let terminal_status = matches!(
-            status.as_str(),
-            "inactive" | "delisted" | "terminated" | "expired"
-        );
-        if terminal_status && instrument.delisted_at.is_none() {
-            return Some("inactive_or_delisted");
-        }
+        // Latest reference status has no historical as-of date. Execution-day
+        // risk snapshots remain authoritative; missing quotes are not waived.
         None
     }
 
@@ -397,7 +421,7 @@ impl ChinaAShareRiskControl {
             RiskCheckScope::Buy => config.static_rules.reject_kcb_buy,
             RiskCheckScope::Sell => false,
         };
-        if reject_kcb && (candidate.is_kcb || symbol_is_kcb(&candidate.symbol)) {
+        if reject_kcb && candidate.is_kcb {
             return Some("kcb");
         }
         let reject_bjse = match scope {
@@ -410,10 +434,14 @@ impl ChinaAShareRiskControl {
         }
         let reject_one_yuan = match scope {
             RiskCheckScope::Selection => config.static_rules.reject_one_yuan_selection,
-            RiskCheckScope::Buy => config.static_rules.reject_one_yuan_buy,
+            RiskCheckScope::Buy => false,
             RiskCheckScope::Sell => false,
         };
-        if reject_one_yuan && (candidate.is_one_yuan || market.day_open <= 1.0) {
+        if reject_one_yuan
+            && !instrument.is_some_and(Instrument::is_exchange_traded_fund)
+            && (candidate.is_one_yuan
+                || (market.day_open.is_finite() && market.day_open > 0.0 && market.day_open <= 1.0))
+        {
             return Some("one_yuan");
         }
         if Self::missing_risk_state_rejected(candidate, config, scope) {
@@ -480,6 +508,15 @@ impl ChinaAShareRiskControl {
         ) {
             return Some(reason);
         }
+        if !check_price.is_finite() || check_price <= 0.0 {
+            return Some("invalid execution price");
+        }
+        // Daily candidate flags can describe the later close. Execution
+        // price constraints must use this order's actual pricing clock.
+        if config.static_rules.reject_one_yuan_buy && check_price <= 1.0
+            && !instrument.is_some_and(Instrument::is_exchange_traded_fund) {
+            return Some("one_yuan");
+        }
         if config.static_rules.respect_allow_buy_sell && !candidate.allow_buy {
             return Some("buy_disabled");
         }
@@ -560,7 +597,9 @@ impl ChinaAShareRiskControl {
         // lifecycle fact must still protect the sell path.  Otherwise a
         // `inactive_or_delisted` candidate could fall through to a synthetic
         // sell price and violate the unresolved-delisted holding contract.
-        if let Some(reason) = candidate_active_status_rejection(candidate, config, RiskCheckScope::Sell) {
+        if let Some(reason) =
+            candidate_active_status_rejection(candidate, config, RiskCheckScope::Sell)
+        {
             return Some(reason);
         }
         if config.static_rules.reject_paused_sell && (market.paused || candidate.is_paused) {
@@ -595,11 +634,6 @@ impl ChinaAShareRiskControl {
     }
 }
 
-fn symbol_is_kcb(symbol: &str) -> bool {
-    let normalized = symbol.trim().to_ascii_uppercase();
-    (normalized.starts_with("688") || normalized.starts_with("689")) && normalized.ends_with(".SH")
-}
-
 fn symbol_is_bjse(symbol: &str) -> bool {
     let normalized = symbol.trim().to_ascii_uppercase();
     normalized.ends_with(".BJ") || normalized.ends_with(".BSE") || normalized.ends_with(".BE")
@@ -640,16 +674,7 @@ fn missing_risk_state_fields(code: &str) -> Vec<String> {
 fn missing_selection_risk_state_rejected(code: &str, config: &FidcRiskControlConfig) -> bool {
     let fields = missing_risk_state_fields(code);
     if fields.is_empty() {
-        return config.static_rules.reject_st_selection
-            || config.static_rules.reject_star_st_selection
-            || config.static_rules.reject_paused_selection
-            || config.static_rules.reject_inactive_selection
-            || config.static_rules.reject_new_listing_selection
-            || config.static_rules.reject_kcb_selection
-            || config.static_rules.reject_bjse_selection
-            || config.static_rules.reject_one_yuan_selection
-            || config.static_rules.reject_upper_limit_selection
-            || config.static_rules.reject_lower_limit_selection;
+        return config.static_rules.selection_state_checks_enabled();
     }
     missing_field_rejected(&fields, config, RiskCheckScope::Selection)
 }
@@ -664,7 +689,6 @@ fn missing_buy_risk_state_rejected(code: &str, config: &FidcRiskControlConfig) -
             || config.static_rules.reject_new_listing_buy
             || config.static_rules.reject_kcb_buy
             || config.static_rules.reject_bjse_buy
-            || config.static_rules.reject_one_yuan_buy
             || config.static_rules.reject_upper_limit_buy
             || config.static_rules.respect_allow_buy_sell;
     }
@@ -741,7 +765,7 @@ fn missing_single_field_rejected(
         },
         "is_one_yuan" | "one_yuan" => match scope {
             RiskCheckScope::Selection => config.static_rules.reject_one_yuan_selection,
-            RiskCheckScope::Buy => config.static_rules.reject_one_yuan_buy,
+            RiskCheckScope::Buy => false,
             RiskCheckScope::Sell => false,
         },
         "allow_buy" => match scope {
@@ -765,18 +789,7 @@ fn missing_single_field_rejected(
             RiskCheckScope::Sell => config.static_rules.reject_lower_limit_sell,
         },
         _ => match scope {
-            RiskCheckScope::Selection => {
-                config.static_rules.reject_st_selection
-                    || config.static_rules.reject_star_st_selection
-                    || config.static_rules.reject_paused_selection
-                    || config.static_rules.reject_inactive_selection
-                    || config.static_rules.reject_new_listing_selection
-                    || config.static_rules.reject_kcb_selection
-                    || config.static_rules.reject_bjse_selection
-                    || config.static_rules.reject_one_yuan_selection
-                    || config.static_rules.reject_upper_limit_selection
-                    || config.static_rules.reject_lower_limit_selection
-            }
+            RiskCheckScope::Selection => config.static_rules.selection_state_checks_enabled(),
             RiskCheckScope::Buy => {
                 config.static_rules.reject_st_buy
                     || config.static_rules.reject_star_st_buy
@@ -785,7 +798,6 @@ fn missing_single_field_rejected(
                     || config.static_rules.reject_new_listing_buy
                     || config.static_rules.reject_kcb_buy
                     || config.static_rules.reject_bjse_buy
-                    || config.static_rules.reject_one_yuan_buy
                     || config.static_rules.reject_upper_limit_buy
                     || config.static_rules.respect_allow_buy_sell
             }
@@ -843,7 +855,7 @@ mod tests {
                 Some(&instrument("delisted", None)),
                 date,
             ),
-            Some("inactive_or_delisted")
+            None
         );
         assert_eq!(
             ChinaAShareRiskControl::instrument_rejection_reason(
@@ -857,7 +869,7 @@ mod tests {
     fn candidate(date: NaiveDate) -> CandidateEligibility {
         CandidateEligibility {
             date,
-            symbol: "002633.SZ".to_string(),
+            symbol: "002633.SZ".into(),
             is_st: false,
             is_star_st: false,
             is_new_listing: false,
@@ -873,7 +885,7 @@ mod tests {
     fn market(date: NaiveDate, last_price: f64, lower_limit: f64) -> DailyMarketSnapshot {
         DailyMarketSnapshot {
             date,
-            symbol: "002633.SZ".to_string(),
+            symbol: "002633.SZ".into(),
             timestamp: Some(format!("{date} 10:18:00")),
             day_open: last_price,
             open: last_price,
@@ -902,6 +914,138 @@ mod tests {
         position
     }
 
+    #[test]
+    fn selection_check_activation_covers_every_configured_flag_and_blacklist_state() {
+        let fields = [
+            "reject_st_selection", "reject_star_st_selection", "reject_paused_selection",
+            "reject_inactive_selection", "reject_new_listing_selection", "reject_kcb_selection",
+            "reject_bjse_selection", "reject_one_yuan_selection", "reject_upper_limit_selection",
+            "reject_lower_limit_selection",
+        ];
+        let base = serde_json::to_value(StaticRiskRuleConfig::default()).unwrap();
+        let declared = base.as_object().unwrap().keys()
+            .filter(|key| key.ends_with("_selection"))
+            .map(String::as_str).collect::<BTreeSet<_>>();
+        assert_eq!(declared, fields.into_iter().collect());
+        for mask in 0..(1_u32 << fields.len()) {
+            for (blacklist_enabled, populated) in [(false, false), (false, true), (true, false), (true, true)] {
+                let mut value = base.clone();
+                for (bit, field) in fields.iter().enumerate() {
+                    value[*field] = serde_json::json!(mask & (1 << bit) != 0);
+                }
+                value["blacklist_enabled"] = serde_json::json!(blacklist_enabled);
+                value["blacklisted_symbols"] = if populated {
+                    serde_json::json!(["002633.SZ"])
+                } else { serde_json::json!([]) };
+                let config: StaticRiskRuleConfig = serde_json::from_value(value).unwrap();
+                assert_eq!(config.selection_checks_enabled(), mask != 0 || (blacklist_enabled && populated));
+            }
+        }
+    }
+
+    #[test]
+    fn inactive_selection_checks_preserve_missing_facts_and_execution_rejections() {
+        let date = d(2025, 2, 6);
+        let mut candidate = candidate(date);
+        candidate.is_st = true;
+        candidate.is_star_st = true;
+        candidate.is_paused = true;
+        candidate.is_new_listing = true;
+        candidate.is_kcb = true;
+        candidate.is_one_yuan = true;
+        candidate.allow_buy = false;
+        let snapshot = market(date, 0.9, 0.9);
+        let config = FidcRiskControlConfig::default();
+        assert!(!config.static_rules.selection_checks_enabled());
+        let instrument = instrument("delisted", Some(date));
+        for code in [None, Some("not_listed"), Some("inactive_or_delisted"),
+            Some("missing_risk_state"), Some("missing_risk_state:is_st;is_kcb|allow_buy"),
+            Some("missing_risk_state:unknown_fact"), Some("missing_risk_state:IS_PAUSED")] {
+            candidate.risk_level_code = code.map(str::to_owned);
+            assert_eq!(ChinaAShareRiskControl::selection_rejection_decision_with_config(
+                date, &candidate, &snapshot, Some(&instrument), &config), None);
+        }
+        candidate.risk_level_code = None;
+        assert_eq!(ChinaAShareRiskControl::buy_rejection_reason_with_config(
+            date, &candidate, &snapshot, None, 0.9, &config), Some("paused"));
+        assert_eq!(ChinaAShareRiskControl::sell_rejection_reason_with_config(
+            date, &candidate, &snapshot, None, None, 0.9, &config), Some("paused"));
+        let mut blacklist_only = config;
+        blacklist_only.static_rules.blacklisted_symbols.insert(candidate.symbol.to_string());
+        assert!(blacklist_only.static_rules.selection_checks_enabled());
+        assert_eq!(ChinaAShareRiskControl::selection_rejection_reason_with_config(
+            date, &candidate, &snapshot, None, &blacklist_only), Some("blacklisted"));
+    }
+
+    #[test]
+    fn one_yuan_buy_rule_uses_execution_price_not_later_close_or_earlier_open() {
+        let day = d(2025, 2, 6);
+        let mut candidate = candidate(day);
+        let mut snapshot = market(day, 1.2, 0.5);
+        let config = FidcRiskControlConfig::default();
+        candidate.is_one_yuan = true;
+        snapshot.day_open = 0.9;
+        snapshot.close = 0.8;
+        assert_eq!(ChinaAShareRiskControl::buy_rejection_reason_with_config(
+            day, &candidate, &snapshot, None, 1.2, &config), None);
+        candidate.is_one_yuan = false;
+        snapshot.day_open = 1.2;
+        snapshot.close = 1.3;
+        for price in [0.9, 1.0] {
+            assert_eq!(ChinaAShareRiskControl::buy_rejection_reason_with_config(
+                day, &candidate, &snapshot, None, price, &config), Some("one_yuan"));
+        }
+        let mut relaxed = config;
+        relaxed.static_rules.reject_one_yuan_buy = false;
+        assert_eq!(ChinaAShareRiskControl::buy_rejection_reason_with_config(
+            day, &candidate, &snapshot, None, 0.9, &relaxed), None);
+    }
+
+    #[test]
+    fn fund_identity_excludes_stock_one_yuan_rule_but_not_actual_price_and_pause_checks() {
+        let day=d(2025,2,6);
+        let mut candidate=candidate(day);
+        let mut snapshot=market(day,1.2,0.5);
+        snapshot.lower_limit=0.01;snapshot.upper_limit=10.;
+        let instrument=Instrument{symbol:candidate.symbol.to_string(),name:"fixture fund".into(),board:"ETF".into(),round_lot:100,listed_at:Some(d(2024,1,2)),delisted_at:None,status:"active".into()};
+        let config=FidcRiskControlConfig::default();
+        assert_eq!(ChinaAShareRiskControl::buy_rejection_reason_with_config(day,&candidate,&snapshot,Some(&instrument),0.9,&config),None);
+        assert_eq!(ChinaAShareRiskControl::buy_rejection_reason_with_config(day,&candidate,&snapshot,Some(&instrument),0.,&config),Some("invalid execution price"));
+        candidate.is_paused=true;snapshot.paused=true;
+        assert_eq!(ChinaAShareRiskControl::buy_rejection_reason_with_config(day,&candidate,&snapshot,Some(&instrument),0.9,&config),Some("paused"));
+    }
+
+    #[test]
+    fn execution_quote_covers_missing_one_yuan_flag_but_not_other_risk_facts() {
+        let day = d(2025, 2, 6);
+        let mut candidate = candidate(day);
+        let snapshot = market(day, 1.2, 0.5);
+        let config = FidcRiskControlConfig::default();
+        candidate.risk_level_code = Some("missing_risk_state:is_one_yuan".into());
+        assert_eq!(ChinaAShareRiskControl::buy_rejection_reason_with_config(
+            day, &candidate, &snapshot, None, 1.2, &config), None);
+        candidate.risk_level_code = Some("missing_risk_state:is_st".into());
+        assert_eq!(ChinaAShareRiskControl::buy_rejection_reason_with_config(
+            day, &candidate, &snapshot, None, 1.2, &config), Some("missing_risk_state"));
+        candidate.risk_level_code = None;
+        for price in [0.0, f64::NAN, f64::INFINITY] {
+            assert_eq!(ChinaAShareRiskControl::buy_rejection_reason_with_config(
+                day, &candidate, &snapshot, None, price, &config), Some("invalid execution price"));
+        }
+    }
+
+    #[test]
+    fn explicit_one_yuan_selection_policy_still_uses_selection_facts() {
+        let day = d(2025, 2, 6);
+        let mut candidate = candidate(day);
+        candidate.is_one_yuan = true;
+        let snapshot = market(day, 1.2, 0.5);
+        let mut config = FidcRiskControlConfig::default();
+        config.static_rules.reject_one_yuan_selection = true;
+        assert_eq!(ChinaAShareRiskControl::selection_rejection_reason_with_config(
+            day, &candidate, &snapshot, None, &config), Some("one_yuan"));
+    }
+
     #[test]
     fn sell_rejection_respects_allow_sell_policy_on_execution_day() {
         let prev_date = d(2024, 4, 16);
@@ -966,7 +1110,7 @@ mod tests {
         config
             .static_rules
             .blacklisted_symbols
-            .insert(candidate.symbol.clone());
+            .insert(candidate.symbol.to_string());
 
         let selection_reason = ChinaAShareRiskControl::selection_rejection_reason_with_config(
             date, &candidate, &market, None, &config,
@@ -1004,6 +1148,24 @@ mod tests {
         assert_eq!(configured_reason, None);
     }
 
+    #[test]
+    fn kcb_filter_uses_classification_instead_of_security_code() {
+        let date = d(2025, 1, 2);
+        let market = market(date, 6.27, 5.63);
+        let mut candidate = candidate(date);
+        let config = FidcRiskControlConfig::default();
+        for symbol in ["688001.SH", "689001.SH", "000001.SZ"] {
+            candidate.symbol = symbol.into();
+            for is_kcb in [false, true] {
+                candidate.is_kcb = is_kcb;
+                let reason = ChinaAShareRiskControl::buy_rejection_reason_with_config(
+                    date, &candidate, &market, None, 6.27, &config,
+                );
+                assert_eq!(reason, is_kcb.then_some("kcb"), "{symbol}");
+            }
+        }
+    }
+
     #[test]
     fn st_and_star_st_filters_are_independent() {
         let date = d(2025, 1, 2);
@@ -1101,7 +1263,7 @@ mod tests {
     fn configurable_bjse_filter_can_be_disabled() {
         let date = d(2025, 1, 2);
         let mut candidate = candidate(date);
-        candidate.symbol = "430047.BJ".to_string();
+        candidate.symbol = "430047.BJ".into();
         candidate.allow_sell = true;
         let market = market(date, 6.27, 5.63);
         let default_selection =
@@ -1133,7 +1295,8 @@ mod tests {
     fn concrete_kcb_reason_wins_over_generic_missing_risk_state() {
         let date = d(2025, 1, 2);
         let mut candidate = candidate(date);
-        candidate.symbol = "688506.SH".to_string();
+        candidate.symbol = "688506.SH".into();
+        candidate.is_kcb = true;
         candidate.risk_level_code = Some("missing_risk_state".to_string());
         let market = market(date, 6.27, 5.63);
         let mut config = FidcRiskControlConfig::default();

crates/fidc-core/src/scheduler.rs

@@ -233,7 +233,7 @@ impl<'a> Scheduler<'a> {
 pub fn default_stage_time(stage: ScheduleStage) -> Option<NaiveTime> {
     match stage {
         ScheduleStage::BeforeTrading => Some(NaiveTime::from_hms_opt(9, 0, 0).expect("valid time")),
-        ScheduleStage::OpenAuction => Some(NaiveTime::from_hms_opt(9, 31, 0).expect("valid time")),
+        ScheduleStage::OpenAuction => Some(NaiveTime::from_hms_opt(9, 25, 0).expect("valid time")),
         ScheduleStage::Bar => Some(NaiveTime::from_hms_opt(10, 18, 0).expect("valid time")),
         ScheduleStage::Minute => None,
         ScheduleStage::OnDay => Some(NaiveTime::from_hms_opt(10, 18, 0).expect("valid time")),
@@ -284,18 +284,27 @@ mod tests {
 
         assert!(scheduler.is_due_on(d(2025, 1, 30), &daily));
         assert!(scheduler.is_due_on(d(2025, 1, 31), &daily));
-        assert!(scheduler.triggered_rules_at(
-            d(2025, 1, 30),
-            ScheduleStage::OnDay,
-            Some(NaiveTime::from_hms_opt(15, 0, 0).unwrap()),
-            std::slice::from_ref(&daily),
-        ).len() == 1);
-        assert!(scheduler.triggered_rules_at(
-            d(2025, 1, 30),
-            ScheduleStage::OnDay,
-            Some(NaiveTime::from_hms_opt(10, 18, 0).unwrap()),
-            std::slice::from_ref(&daily),
-        ).is_empty());
+        assert!(
+            scheduler
+                .triggered_rules_at(
+                    d(2025, 1, 30),
+                    ScheduleStage::OnDay,
+                    Some(NaiveTime::from_hms_opt(15, 0, 0).unwrap()),
+                    std::slice::from_ref(&daily),
+                )
+                .len()
+                == 1
+        );
+        assert!(
+            scheduler
+                .triggered_rules_at(
+                    d(2025, 1, 30),
+                    ScheduleStage::OnDay,
+                    Some(NaiveTime::from_hms_opt(10, 18, 0).unwrap()),
+                    std::slice::from_ref(&daily),
+                )
+                .is_empty()
+        );
     }
 
     #[test]

crates/fidc-core/src/series_columns.rs

@@ -0,0 +1,191 @@
+use std::ops::Index;
+
+use super::prefix_sums;
+
+#[derive(Debug, Clone)]
+pub(super) enum ReferenceMatchedValues {
+    Identical,
+    Owned(Vec<f64>),
+}
+
+impl ReferenceMatchedValues {
+    pub(super) fn push(&mut self, value: f64, reference: &[f64], capacity: usize) {
+        let previous_len = reference.len().checked_sub(1).expect("reference row is missing");
+        match self {
+            Self::Identical if value.to_bits() == reference[previous_len].to_bits() => {}
+            Self::Identical => {
+                let mut values = Vec::with_capacity(capacity);
+                values.extend_from_slice(&reference[..previous_len]);
+                values.push(value);
+                *self = Self::Owned(values);
+            }
+            Self::Owned(values) => {
+                debug_assert_eq!(values.len(), previous_len);
+                values.push(value);
+            }
+        }
+    }
+
+    pub(super) fn values<'a>(&'a self, reference: &'a [f64]) -> &'a [f64] {
+        match self {
+            Self::Identical => reference,
+            Self::Owned(values) => {
+                debug_assert_eq!(values.len(), reference.len());
+                values
+            }
+        }
+    }
+
+    pub(super) fn set(&mut self, index: usize, value: f64, reference: &[f64]) {
+        assert!(index < reference.len(), "series index out of bounds");
+        match self {
+            Self::Owned(values) => values[index] = value,
+            Self::Identical if value.to_bits() == reference[index].to_bits() => {}
+            Self::Identical => {
+                let mut values = reference.to_vec();
+                values[index] = value;
+                *self = Self::Owned(values);
+            }
+        }
+    }
+
+    pub(super) fn prefix(&self) -> Self {
+        match self {
+            Self::Identical => Self::Identical,
+            Self::Owned(values) => Self::Owned(prefix_sums(values)),
+        }
+    }
+}
+
+#[derive(Debug, Clone)]
+pub(super) struct RepeatedValues<T> {
+    repeated: T,
+    values: Option<Vec<T>>,
+    len: usize,
+}
+
+impl<T: Default + Clone + Eq> RepeatedValues<T> {
+    pub(super) fn new() -> Self {
+        Self { repeated: T::default(), values: None, len: 0 }
+    }
+
+    pub(super) fn push(&mut self, value: &T, capacity: usize) {
+        if let Some(values) = &mut self.values {
+            values.push(value.clone());
+        } else if self.len == 0 {
+            self.repeated = value.clone();
+        } else if *value != self.repeated {
+            let mut values = Vec::with_capacity(capacity);
+            values.resize(self.len, std::mem::take(&mut self.repeated));
+            values.push(value.clone());
+            self.values = Some(values);
+        }
+        self.len += 1;
+    }
+
+    pub(super) fn set(&mut self, index: usize, value: T) {
+        assert!(index < self.len, "series index out of bounds");
+        if let Some(values) = &mut self.values {
+            values[index] = value;
+        } else if value != self.repeated {
+            let mut values = vec![std::mem::take(&mut self.repeated); self.len];
+            values[index] = value;
+            self.values = Some(values);
+        }
+    }
+}
+
+impl<T> Index<usize> for RepeatedValues<T> {
+    type Output = T;
+
+    fn index(&self, index: usize) -> &T {
+        assert!(index < self.len, "series index out of bounds");
+        match &self.values {
+            Some(values) => &values[index],
+            None => &self.repeated,
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn bits(values: &[f64]) -> Vec<u64> {
+        values.iter().map(|value| value.to_bits()).collect()
+    }
+
+    #[test]
+    fn identical_prices_share_only_after_exact_bit_comparison() {
+        let reference = [10., -0., f64::from_bits(0x7ff8_0000_0000_0042), f64::INFINITY];
+        let mut column = ReferenceMatchedValues::Identical;
+        for (index, value) in reference.iter().copied().enumerate() {
+            column.push(value, &reference[..=index], reference.len());
+        }
+        assert!(matches!(column, ReferenceMatchedValues::Identical));
+        assert_eq!(column.values(&reference).as_ptr(), reference.as_ptr());
+        let prefix = prefix_sums(&reference);
+        assert_eq!(bits(column.prefix().values(&prefix)), bits(&prefix));
+
+        let original = column.clone();
+        column.set(1, 0., &reference);
+        assert!(matches!(column, ReferenceMatchedValues::Owned(_)));
+        assert_eq!(column.values(&reference)[1].to_bits(), 0_f64.to_bits());
+        assert_eq!(bits(original.values(&reference)), bits(&reference));
+        assert_eq!(bits(column.prefix().values(&prefix)), bits(&prefix_sums(column.values(&reference))));
+    }
+
+    #[test]
+    fn differing_prices_preserve_zero_nan_payloads_and_prior_rows() {
+        let reference = [10., 11., f64::from_bits(0x7ff8_0000_0000_0042), 13.];
+        for actual in [
+            [10., 0., reference[2], 13.],
+            [10., 11., f64::from_bits(0x7ff8_0000_0000_0043), 13.],
+        ] {
+            let mut column = ReferenceMatchedValues::Identical;
+            for (index, value) in actual.iter().copied().enumerate() {
+                column.push(value, &reference[..=index], actual.len());
+            }
+            assert!(matches!(column, ReferenceMatchedValues::Owned(_)));
+            assert_eq!(bits(column.values(&reference)), bits(&actual));
+        }
+    }
+
+    #[test]
+    fn repeated_values_preserve_nonzero_values_and_copy_on_change() {
+        let mut column = RepeatedValues::new();
+        for _ in 0..128 { column.push(&7_u64, 128); }
+        assert!(column.values.is_none());
+        assert_eq!(column[127], 7);
+        column.set(0, 7);
+        assert!(column.values.is_none());
+        let mut changed = column.clone();
+        changed.set(64, 9);
+        assert_eq!(changed[64], 9);
+        assert_eq!(changed[63], 7);
+        assert_eq!(column[64], 7);
+    }
+
+    #[test]
+    fn optional_values_keep_none_distinct_from_empty_and_repeated_text() {
+        for repeated in [None, Some(String::new()), Some("continuous".to_string())] {
+            let mut column = RepeatedValues::new();
+            for _ in 0..12 { column.push(&repeated, 16); }
+            assert!(column.values.is_none());
+            assert_eq!(column[0], repeated);
+            column.push(&Some("closing".to_string()), 16);
+            assert_eq!(column[11], repeated);
+            assert_eq!(column[12].as_deref(), Some("closing"));
+            column.set(5, None);
+            assert_eq!(column[5], None);
+            assert_eq!(column[4], repeated);
+        }
+    }
+
+    #[test]
+    #[should_panic(expected = "series index out of bounds")]
+    fn repeated_values_reject_out_of_range_access() {
+        let column = RepeatedValues::<u64>::new();
+        let _ = column[0];
+    }
+}

crates/fidc-core/src/session_events.rs

@@ -0,0 +1,398 @@
+//! Completed, same-session minute events. These bars never become execution quotes.
+use crate::{
+    daily_patterns::{PatternResult, PatternSpec},
+    factor_events::{Expr, Frame},
+};
+use chrono::{FixedOffset, NaiveDateTime, NaiveTime, TimeZone, Timelike};
+use serde::{Deserialize, Serialize};
+use serde_json::{json, Value};
+use std::collections::BTreeMap;
+use std::sync::Arc;
+
+pub const CONTRACT: &str = "fidc_completed_session_events_v1";
+pub const EVENTS: &[&str] = &[
+    "PRICE_CROSS_VWAP_UP",
+    "PRICE_CROSS_VWAP_DOWN",
+    "INTRADAY_HIGH_BREAKOUT",
+    "INTRADAY_LOW_BREAKDOWN",
+    "OPENING_RANGE_BREAKOUT_UP",
+    "OPENING_RANGE_BREAKOUT_DOWN",
+    "INTRADAY_VOLUME_SPIKE",
+    "MORNING_HIGH_BREAKOUT",
+    "MORNING_LOW_BREAKDOWN",
+    "AFTERNOON_MOMENTUM_UP",
+    "AFTERNOON_MOMENTUM_DOWN",
+    "LATE_SESSION_STRENGTH",
+    "LATE_SESSION_WEAKNESS",
+];
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct MinuteBar {
+    pub symbol: String,
+    pub timestamp: NaiveDateTime,
+    pub available_at: NaiveDateTime,
+    pub open: f64,
+    pub high: f64,
+    pub low: f64,
+    pub close: f64,
+    pub volume: f64,
+    pub amount: f64,
+}
+pub type BarStore = Arc<BTreeMap<(chrono::NaiveDate, String), Vec<MinuteBar>>>;
+pub fn bar_store(bars: Vec<MinuteBar>) -> Result<BarStore, String> {
+    let mut groups = BTreeMap::<(chrono::NaiveDate, String), Vec<MinuteBar>>::new();
+    for bar in bars {
+        groups
+            .entry((bar.timestamp.date(), bar.symbol.clone()))
+            .or_default()
+            .push(bar);
+    }
+    for rows in groups.values_mut() {
+        rows.sort_by_key(|r| r.timestamp);
+        if rows
+            .windows(2)
+            .any(|pair| pair[0].timestamp == pair[1].timestamp)
+        {
+            return Err("duplicate_completed_minute_bar".into());
+        }
+    }
+    Ok(Arc::new(groups))
+}
+fn f(name: &str) -> Expr {
+    Expr::Field { name: name.into() }
+}
+fn n(value: f64) -> Expr {
+    Expr::Number { value }
+}
+fn op(name: &str, args: Vec<Expr>, window: Option<usize>) -> Expr {
+    Expr::Operator {
+        name: name.into(),
+        args,
+        window,
+    }
+}
+fn time(minutes: u32) -> NaiveTime {
+    NaiveTime::from_hms_opt(minutes / 60, minutes % 60, 0).unwrap()
+}
+
+pub fn is_regular_label(t: NaiveTime) -> bool {
+    t.second() == 0 && (time(570) <= t && t <= time(690) || time(780) < t && t <= time(900))
+}
+
+pub fn expression(event: &str, p: &BTreeMap<String, Value>) -> Result<Expr, String> {
+    let cross = |up: bool, a: Expr, b: Expr| {
+        op(
+            if up { "CROSS_ABOVE" } else { "CROSS_BELOW" },
+            vec![a, b],
+            None,
+        )
+    };
+    Ok(match event {
+        "PRICE_CROSS_VWAP_UP" => cross(true, f("close"), f("session_vwap")),
+        "PRICE_CROSS_VWAP_DOWN" => cross(false, f("close"), f("session_vwap")),
+        "INTRADAY_HIGH_BREAKOUT" => op(
+            "GT",
+            vec![
+                f("close"),
+                op("LAG", vec![op("CUMMAX", vec![f("high")], None)], Some(1)),
+            ],
+            None,
+        ),
+        "INTRADAY_LOW_BREAKDOWN" => op(
+            "LT",
+            vec![
+                f("close"),
+                op("LAG", vec![op("CUMMIN", vec![f("low")], None)], Some(1)),
+            ],
+            None,
+        ),
+        "OPENING_RANGE_BREAKOUT_UP" => cross(true, f("close"), f("opening_high")),
+        "OPENING_RANGE_BREAKOUT_DOWN" => cross(false, f("close"), f("opening_low")),
+        "MORNING_HIGH_BREAKOUT" => cross(true, f("close"), f("morning_high")),
+        "MORNING_LOW_BREAKDOWN" => cross(false, f("close"), f("morning_low")),
+        "AFTERNOON_MOMENTUM_UP" => cross(true, f("afternoon_return"), n(0.)),
+        "AFTERNOON_MOMENTUM_DOWN" => cross(false, f("afternoon_return"), n(0.)),
+        "LATE_SESSION_STRENGTH" => cross(true, f("late_return"), n(0.)),
+        "LATE_SESSION_WEAKNESS" => cross(false, f("late_return"), n(0.)),
+        "INTRADAY_VOLUME_SPIKE" => op(
+            "GTE",
+            vec![
+                f("volume"),
+                op(
+                    "MUL",
+                    vec![
+                        op(
+                            "LAG",
+                            vec![op(
+                                "ROLLING_MEAN",
+                                vec![f("volume")],
+                                Some(p["volume_window"].as_u64().unwrap() as usize),
+                            )],
+                            Some(1),
+                        ),
+                        n(p["volume_multiple"].as_f64().unwrap()),
+                    ],
+                    None,
+                ),
+            ],
+            None,
+        ),
+        _ => return Err("session_event_not_registered".into()),
+    })
+}
+
+pub fn evaluate(
+    spec: &PatternSpec,
+    symbol: &str,
+    bars: &[MinuteBar],
+    decision: NaiveDateTime,
+) -> Result<PatternResult, String> {
+    let mut result = PatternResult {
+        symbol: symbol.into(),
+        name: None,
+        matched: false,
+        score: None,
+        checks: vec![],
+        values: json!({}),
+        anchor: Value::Null,
+        exclusion: None,
+    };
+    if bars.is_empty() {
+        return Err(format!(
+            "session_source_missing: {symbol} {}",
+            decision.date()
+        ));
+    }
+    let visible = bars
+        .iter()
+        .filter(|b| {
+            b.timestamp.date() == decision.date()
+                && b.timestamp < decision
+                && b.available_at <= decision
+        })
+        .collect::<Vec<_>>();
+    if visible.is_empty() {
+        result.exclusion = Some(json!({"reason":"session_before_first_completed_bar"}));
+        return Ok(result);
+    }
+    let last = visible.last().unwrap().timestamp;
+    let expected = (570..=690)
+        .chain(781..=900)
+        .map(|m| decision.date().and_time(time(m)))
+        .filter(|t| *t < decision)
+        .last();
+    if expected != Some(last) {
+        return Err(format!(
+            "session_latest_bar_missing: {symbol} expected={expected:?} actual={last}"
+        ));
+    }
+    let mut indexed = BTreeMap::new();
+    for b in &visible {
+        if b.symbol != symbol
+            || !is_regular_label(b.timestamp.time())
+            || b.available_at < b.timestamp
+            || [b.open, b.high, b.low, b.close, b.volume, b.amount]
+                .iter()
+                .any(|v| !v.is_finite())
+            || b.low <= 0.
+            || b.open <= 0.
+            || b.close <= 0.
+            || b.high < b.open.max(b.close)
+            || b.low > b.open.min(b.close)
+            || b.volume < 0.
+            || b.amount < 0.
+            || indexed.insert(b.timestamp, b).is_some()
+        {
+            return Err(format!("session_bar_invalid: {symbol} {}", b.timestamp));
+        }
+    }
+    for minute in (571..=690).chain(781..=900) {
+        let stamp = decision.date().and_time(time(minute));
+        if stamp <= last && !indexed.contains_key(&stamp) {
+            return Err(format!(
+                "session_bar_gap: {symbol} {stamp}; no filling or calendar compression"
+            ));
+        }
+    }
+    let opening_end = time(570 + spec.n("opening_minutes") as u32);
+    let (mut volume, mut amount) = (0., 0.);
+    let (mut opening_high, mut opening_low) = (f64::NEG_INFINITY, f64::INFINITY);
+    let (mut morning_high, mut morning_low) = (f64::NEG_INFINITY, f64::INFINITY);
+    let (mut morning_close, mut late_close) = (None, None);
+    let mut fields: BTreeMap<String, Vec<Option<f64>>> = [
+        "open",
+        "high",
+        "low",
+        "close",
+        "volume",
+        "amount",
+        "session_vwap",
+        "opening_high",
+        "opening_low",
+        "morning_high",
+        "morning_low",
+        "afternoon_return",
+        "late_return",
+    ]
+    .into_iter()
+    .map(|s| (s.into(), vec![]))
+    .collect();
+    let mut timestamps = vec![];
+    let mut available_at = vec![];
+    let zone = FixedOffset::east_opt(8 * 3600).unwrap();
+    for b in indexed.values() {
+        let t = b.timestamp.time();
+        volume += b.volume;
+        amount += b.amount;
+        if t <= opening_end {
+            opening_high = opening_high.max(b.high);
+            opening_low = opening_low.min(b.low);
+        }
+        if t <= time(690) {
+            morning_high = morning_high.max(b.high);
+            morning_low = morning_low.min(b.low);
+        }
+        if t == time(690) {
+            morning_close = Some(b.close);
+        }
+        if t == time(870) {
+            late_close = Some(b.close);
+        }
+        for (name, value) in [
+            ("open", Some(b.open)),
+            ("high", Some(b.high)),
+            ("low", Some(b.low)),
+            ("close", Some(b.close)),
+            ("volume", Some(b.volume)),
+            ("amount", Some(b.amount)),
+            ("session_vwap", (volume > 0.).then_some(amount / volume)),
+            ("opening_high", (t >= opening_end).then_some(opening_high)),
+            ("opening_low", (t >= opening_end).then_some(opening_low)),
+            ("morning_high", (t >= time(690)).then_some(morning_high)),
+            ("morning_low", (t >= time(690)).then_some(morning_low)),
+            ("afternoon_return", morning_close.map(|v| b.close / v - 1.)),
+            ("late_return", late_close.map(|v| b.close / v - 1.)),
+        ] {
+            fields.get_mut(name).unwrap().push(value);
+        }
+        timestamps.push(zone.from_local_datetime(&b.timestamp).single().unwrap());
+        available_at.push(zone.from_local_datetime(&b.available_at).single().unwrap());
+    }
+    let frame = Frame {
+        symbol: symbol.into(),
+        frequency: "1m".into(),
+        decision_at: zone.from_local_datetime(&decision).single().unwrap(),
+        timestamps,
+        available_at,
+        fields,
+    };
+    let event = spec
+        .session_event
+        .as_deref()
+        .ok_or("session_event_id_required")?;
+    let values = crate::factor_events::evaluate(&expression(event, &spec.parameters)?, &frame)?;
+    let latest = values.values.last().copied().flatten();
+    result.score = latest;
+    result.matched = latest == Some(1.);
+    result.values = json!({"session_event":event,"session_contract":CONTRACT,"expression":values,"signal_bar_end":last,"decision_at":decision,"bars":visible.len(),"bar_times":frame.timestamps.iter().map(|t|t.format("%Y-%m-%dT%H:%M:%S").to_string()).collect::<Vec<_>>(),"close":visible.last().unwrap().close,"session_return":visible.last().unwrap().close/visible.first().unwrap().open-1.,"price_policy":"same_session_raw_ohlcv"});
+    if latest.is_none() {
+        result.exclusion = Some(json!({"reason":"session_warmup_or_undefined"}));
+    } else {
+        result.checks.push(json!({"label":"分钟事件","actual":latest,"operator":"==","threshold":1,"passed":result.matched}));
+    }
+    Ok(result)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    fn spec(event: &str) -> PatternSpec {
+        serde_json::from_value::<PatternSpec>(
+            json!({"template":"session_event","session_event":event,"parameters":{}}),
+        )
+        .unwrap()
+        .validate()
+        .unwrap()
+    }
+    fn bars() -> Vec<MinuteBar> {
+        let date = chrono::NaiveDate::from_ymd_opt(2026, 9, 8).unwrap();
+        (570..=690)
+            .chain(781..=900)
+            .enumerate()
+            .map(|(i, m)| {
+                let timestamp = date.and_time(time(m));
+                let price = 100. + (i % 17) as f64 / 10.;
+                let volume = if i % 39 == 0 { 1000. } else { 100. };
+                MinuteBar {
+                    symbol: "300395.SZ".into(),
+                    timestamp,
+                    available_at: timestamp,
+                    open: price,
+                    high: price + 0.1,
+                    low: price - 0.1,
+                    close: price,
+                    volume,
+                    amount: volume * price,
+                }
+            })
+            .collect()
+    }
+    #[test]
+    fn all_thirteen_events_return_native_boolean_series() {
+        let bars = bars();
+        let decision = "2026-09-08T15:00:01".parse().unwrap();
+        for event in EVENTS {
+            let value = evaluate(&spec(event), "300395.SZ", &bars, decision).unwrap();
+            assert!(value.score.is_some(), "{event}");
+            assert_eq!(value.values["expression"]["value_type"], "boolean");
+        }
+    }
+    #[test]
+    fn decision_uses_the_previous_completed_label_and_future_prices_do_not_rewrite() {
+        let mut bars = bars();
+        let decision = "2026-09-08T10:02:00".parse().unwrap();
+        for event in EVENTS {
+            let before = evaluate(&spec(event), "300395.SZ", &bars, decision).unwrap();
+            for bar in &mut bars {
+                if bar.timestamp >= decision {
+                    bar.open = 1000.;
+                    bar.close = 1000.;
+                    bar.high = 1001.;
+                    bar.low = 999.;
+                }
+            }
+            let after = evaluate(&spec(event), "300395.SZ", &bars, decision).unwrap();
+            assert_eq!(before.values, after.values);
+            assert_eq!(after.values["signal_bar_end"], "2026-09-08T10:01:00");
+        }
+    }
+    #[test]
+    fn gaps_and_stale_last_bars_do_not_become_false_or_repeated_signals() {
+        let mut values = bars();
+        let decision = "2026-09-08T10:02:00".parse().unwrap();
+        values.retain(|r| r.timestamp.time() != time(600));
+        assert!(evaluate(&spec(EVENTS[0]), "300395.SZ", &values, decision)
+            .unwrap_err()
+            .contains("session_bar_gap"));
+        let stale = bars()
+            .into_iter()
+            .filter(|r| r.timestamp.time() < time(601))
+            .collect::<Vec<_>>();
+        assert!(evaluate(&spec(EVENTS[0]), "300395.SZ", &stale, decision)
+            .unwrap_err()
+            .contains("latest_bar_missing"));
+    }
+    #[test]
+    fn opening_range_is_unavailable_before_the_range_has_completed() {
+        let value = evaluate(
+            &spec("OPENING_RANGE_BREAKOUT_UP"),
+            "300395.SZ",
+            &bars(),
+            "2026-09-08T09:59:01".parse().unwrap(),
+        )
+        .unwrap();
+        assert_eq!(value.score, None);
+        assert!(!value.matched);
+    }
+}

crates/fidc-core/src/signal_contract.rs

@@ -0,0 +1,590 @@
+//! Immutable, account-independent trading signals. Quantity and execution
+//! prices are intentionally absent; the existing broker owns those decisions.
+
+use std::collections::{BTreeMap, BTreeSet};
+use std::sync::{Arc, Mutex, OnceLock, Weak};
+
+use chrono::{DateTime, FixedOffset, NaiveDate, NaiveDateTime, NaiveTime, Utc};
+use serde::{Deserialize, Serialize};
+use sha2::{Digest, Sha256};
+
+use crate::strategy::{OrderIntent, StrategyContext};
+use crate::portfolio::PortfolioState;
+
+pub const SIGNAL_BOOK_SCHEMA: &str = "fidc.signal-book/v2";
+
+#[derive(Debug, Clone, PartialEq, Eq, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase", deny_unknown_fields)]
+pub struct SignalBookReference {
+    pub book_id: String,
+    pub version_sha256: String,
+    pub artifact_sha256: String,
+}
+
+impl SignalBookReference {
+    pub fn validate(&self) -> Result<(), String> {
+        if !valid_sha(&self.version_sha256) || !valid_sha(&self.artifact_sha256)
+            || self.book_id != format!("signal_book_{}",self.version_sha256)
+        { return Err("signal_book_reference_invalid".into()); }
+        Ok(())
+    }
+}
+
+#[derive(Default)]
+struct SignalCache {
+    entries: BTreeMap<String,Weak<ValidatedSignalBook>>,
+    retained: std::collections::VecDeque<(String,Arc<ValidatedSignalBook>,usize)>,
+}
+
+fn signal_cache() -> &'static Mutex<SignalCache> {
+    static CACHE: OnceLock<Mutex<SignalCache>> = OnceLock::new();
+    CACHE.get_or_init(||Mutex::new(SignalCache::default()))
+}
+
+pub fn cached_signal_book(reference: &SignalBookReference) -> Result<Option<Arc<ValidatedSignalBook>>,String> {
+    reference.validate()?;
+    let cache=signal_cache().lock().map_err(|_|"signal_cache_lock_failed")?;
+    let book=cache.entries.get(&reference.artifact_sha256).and_then(Weak::upgrade);
+    if book.as_ref().is_some_and(|book|book.version_sha256()!=reference.version_sha256) {
+        return Err("signal_book_cached_version_mismatch".into());
+    }
+    Ok(book)
+}
+
+pub fn register_signal_book(reference: &SignalBookReference, body: &[u8]) -> Result<Arc<ValidatedSignalBook>,String> {
+    use sha2::{Digest,Sha256};
+    reference.validate()?;
+    if body.len()>64*1024*1024 || format!("{:x}",Sha256::digest(body))!=reference.artifact_sha256 {
+        return Err("signal_book_artifact_hash_or_size_invalid".into());
+    }
+    let raw:SignalBook=serde_json::from_slice(body).map_err(|error|format!("signal_book_decode_failed: {error}"))?;
+    if raw.version_sha256!=reference.version_sha256 { return Err("signal_book_version_mismatch".into()); }
+    let book=Arc::new(raw.validate()?);
+    let mut cache=signal_cache().lock().map_err(|_|"signal_cache_lock_failed")?;
+    cache.entries.retain(|_,value|value.strong_count()>0);
+    if let Some(existing)=cache.entries.get(&reference.artifact_sha256).and_then(Weak::upgrade) { return Ok(existing); }
+    cache.entries.insert(reference.artifact_sha256.clone(),Arc::downgrade(&book));
+    let estimated=body.len().saturating_mul(4);
+    if estimated<=128*1024*1024 {
+        cache.retained.push_back((reference.artifact_sha256.clone(),book.clone(),estimated));
+        while cache.retained.len()>4 || cache.retained.iter().map(|entry|entry.2).sum::<usize>()>128*1024*1024 {
+            cache.retained.pop_front();
+        }
+    }
+    Ok(book)
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Deserialize, Serialize)]
+#[serde(rename_all = "snake_case")]
+pub enum SignalProvenance {
+    Observed,
+    Reconstructed,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Deserialize, Serialize)]
+#[serde(rename_all = "snake_case")]
+pub enum SignalFrequency {
+    Daily,
+    Minute,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+#[serde(tag = "kind", rename_all = "snake_case", deny_unknown_fields)]
+pub enum SignalAction {
+    TargetWeight { symbol: String, weight: f64 },
+    BuyCondition { symbol: String, allowed: bool },
+    Exit { symbol: String },
+    Reduce { symbol: String, remaining_ratio: f64 },
+}
+
+impl SignalAction {
+    fn symbol(&self) -> &str {
+        match self {
+            Self::TargetWeight { symbol, .. }
+            | Self::BuyCondition { symbol, .. }
+            | Self::Exit { symbol }
+            | Self::Reduce { symbol, .. } => symbol,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase", deny_unknown_fields)]
+pub struct SignalSnapshot {
+    pub signal_at: DateTime<Utc>,
+    pub decision_at: DateTime<Utc>,
+    pub input_as_of: DateTime<Utc>,
+    pub input_available_at: DateTime<Utc>,
+    pub generated_at: DateTime<Utc>,
+    pub published_at: DateTime<Utc>,
+    pub input_sha256: String,
+    pub complete_targets: bool,
+    pub actions: Vec<SignalAction>,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase", deny_unknown_fields)]
+pub struct SignalBook {
+    pub schema: String,
+    pub version_sha256: String,
+    pub generator_sha256: String,
+    pub model_sha256: Option<String>,
+    pub knowledge_cutoff: Option<DateTime<Utc>>,
+    pub provenance: SignalProvenance,
+    pub frequency: SignalFrequency,
+    pub expected_decisions: Vec<DateTime<Utc>>,
+    pub snapshots: Vec<SignalSnapshot>,
+}
+
+#[derive(Debug, Clone)]
+pub struct ValidatedSignalBook {
+    book: SignalBook,
+    index: BTreeMap<NaiveDateTime, usize>,
+}
+
+fn valid_sha(value: &str) -> bool {
+    value.len() == 64 && value.bytes().all(|byte| byte.is_ascii_digit() || (b'a'..=b'f').contains(&byte))
+}
+
+fn shanghai(value: DateTime<Utc>) -> NaiveDateTime {
+    value.with_timezone(&FixedOffset::east_opt(8 * 3600).expect("Shanghai offset")).naive_local()
+}
+
+impl SignalBook {
+    pub fn content_sha256(&self) -> Result<String, String> {
+        let mut value=serde_json::to_value(self).map_err(|error|error.to_string())?;
+        value.as_object_mut().ok_or("signal_book_object_required")?.remove("versionSha256");
+        value["knowledgeCutoff"]=self.knowledge_cutoff.map(|at|serde_json::json!(at.timestamp_micros())).unwrap_or(serde_json::Value::Null);
+        value["expectedDecisions"]=serde_json::json!(self.expected_decisions.iter().map(DateTime::timestamp_micros).collect::<Vec<_>>());
+        for (raw,snapshot) in value["snapshots"].as_array_mut().ok_or("signal_snapshots_required")?.iter_mut().zip(&self.snapshots) {
+            let object=raw.as_object_mut().ok_or("signal_snapshot_required")?;
+            object.remove("generatedAt");
+            object.remove("publishedAt");
+            for (key,at) in [("signalAt",snapshot.signal_at),("decisionAt",snapshot.decision_at),
+                            ("inputAsOf",snapshot.input_as_of),("inputAvailableAt",snapshot.input_available_at)] {
+                object.insert(key.into(),serde_json::json!(at.timestamp_micros()));
+            }
+            for (raw,action) in object.get_mut("actions").and_then(serde_json::Value::as_array_mut).ok_or("signal_actions_required")?.iter_mut().zip(&snapshot.actions) {
+                match action {
+                    SignalAction::TargetWeight{weight,..}=>raw["weight"]=serde_json::json!(format!("{:016x}",weight.to_bits())),
+                    SignalAction::Reduce{remaining_ratio,..}=>raw["remaining_ratio"]=serde_json::json!(format!("{:016x}",remaining_ratio.to_bits())),
+                    _=>{}
+                }
+            }
+        }
+        fn sorted(value:serde_json::Value)->serde_json::Value {
+            match value {
+                serde_json::Value::Object(map)=>serde_json::Value::Object(map.into_iter().map(|(key,value)|(key,sorted(value)))
+                    .collect::<BTreeMap<_,_>>().into_iter().collect()),
+                serde_json::Value::Array(rows)=>serde_json::Value::Array(rows.into_iter().map(sorted).collect()),
+                other=>other,
+            }
+        }
+        let raw=serde_json::to_vec(&sorted(value)).map_err(|error|error.to_string())?;
+        Ok(format!("{:x}",Sha256::digest(raw)))
+    }
+
+    pub fn validate(self) -> Result<ValidatedSignalBook, String> {
+        if self.schema != SIGNAL_BOOK_SCHEMA || !valid_sha(&self.version_sha256)
+            || !valid_sha(&self.generator_sha256)
+        {
+            return Err("signal_book_identity_invalid".into());
+        }
+        if self.model_sha256.as_ref().is_some_and(|value| !valid_sha(value))
+            || self.model_sha256.is_some() != self.knowledge_cutoff.is_some()
+        { return Err("signal_model_training_identity_incomplete".into()); }
+        if self.expected_decisions.is_empty() || self.expected_decisions.len() > 100_000
+            || self.expected_decisions.len() != self.snapshots.len()
+        {
+            return Err("signal_book_decision_coverage_incomplete".into());
+        }
+        let mut index = BTreeMap::new();
+        let mut previous = None;
+        let mut total_actions = 0usize;
+        for (number, (expected, snapshot)) in self.expected_decisions.iter().zip(&self.snapshots).enumerate() {
+            if [*expected,snapshot.signal_at,snapshot.input_as_of,snapshot.input_available_at,snapshot.generated_at,snapshot.published_at]
+                .iter().any(|at|at.timestamp_subsec_nanos()%1000!=0) || self.knowledge_cutoff.is_some_and(|at|at.timestamp_subsec_nanos()%1000!=0) {
+                return Err("signal_timestamp_requires_microsecond_precision".into());
+            }
+            if snapshot.decision_at != *expected || previous.is_some_and(|value| value >= *expected) {
+                return Err("signal_book_decisions_duplicate_or_unordered".into());
+            }
+            previous = Some(*expected);
+            if self.knowledge_cutoff.is_some_and(|cutoff| cutoff > snapshot.signal_at) || snapshot.signal_at > *expected
+                || snapshot.input_available_at > snapshot.signal_at || snapshot.input_as_of > snapshot.input_available_at
+                || snapshot.published_at < snapshot.generated_at || !valid_sha(&snapshot.input_sha256)
+                || snapshot.generated_at < snapshot.input_available_at
+                || self.knowledge_cutoff.is_some_and(|cutoff| snapshot.generated_at < cutoff)
+            {
+                return Err("signal_book_future_or_invalid_input".into());
+            }
+            if self.provenance == SignalProvenance::Observed && snapshot.published_at > *expected {
+                return Err("observed_signal_not_available_at_decision".into());
+            }
+            total_actions = total_actions.checked_add(snapshot.actions.len()).ok_or("signal_book_action_limit")?;
+            if total_actions > 2_000_000 { return Err("signal_book_action_limit".into()); }
+            let mut action_keys = BTreeSet::new();
+            let mut target_symbols = BTreeSet::new();
+            let mut reductions = BTreeSet::new();
+            let mut total_weight = 0.0;
+            for action in &snapshot.actions {
+                let symbol = action.symbol();
+                if symbol.is_empty() || symbol.trim() != symbol { return Err("signal_symbol_invalid".into()); }
+                let kind = match action {
+                    SignalAction::TargetWeight { weight, .. } => {
+                        if !weight.is_finite() || !(0.0..=1.0).contains(weight) { return Err("signal_target_weight_invalid".into()); }
+                        target_symbols.insert(symbol);
+                        total_weight += weight;
+                        "target"
+                    }
+                    SignalAction::BuyCondition { .. } => "buy_condition",
+                    SignalAction::Exit { .. } => { reductions.insert(symbol); "exit" }
+                    SignalAction::Reduce { remaining_ratio, .. } => {
+                        if !remaining_ratio.is_finite() || !(0.0..1.0).contains(remaining_ratio) { return Err("signal_reduction_invalid".into()); }
+                        reductions.insert(symbol);
+                        "reduce"
+                    }
+                };
+                if !action_keys.insert((symbol, kind)) { return Err("signal_action_duplicate".into()); }
+            }
+            if total_weight > 1.0 + 1e-12 { return Err("signal_target_exposure_exceeds_one".into()); }
+            if snapshot.complete_targets && !reductions.is_empty() {
+                return Err("complete_target_snapshot_cannot_mix_relative_exits".into());
+            }
+            if !target_symbols.is_disjoint(&reductions) { return Err("signal_target_exit_conflict".into()); }
+            for symbol in &reductions {
+                if action_keys.contains(&(*symbol, "exit")) && action_keys.contains(&(*symbol, "reduce")) {
+                    return Err("signal_exit_reduction_conflict".into());
+                }
+            }
+            index.insert(shanghai(*expected), number);
+        }
+        if self.content_sha256()? != self.version_sha256 {
+            return Err("signal_book_content_hash_mismatch".into());
+        }
+        Ok(ValidatedSignalBook { book: self, index })
+    }
+}
+
+impl ValidatedSignalBook {
+    pub fn require_observed(&self) -> Result<(), String> {
+        if self.book.provenance != SignalProvenance::Observed {
+            return Err("reconstructed_signal_forbidden_in_online_execution".into());
+        }
+        Ok(())
+    }
+
+    pub fn version_sha256(&self) -> &str { &self.book.version_sha256 }
+    pub fn generator_sha256(&self) -> &str { &self.book.generator_sha256 }
+
+    pub fn decision_dates(&self) -> BTreeSet<NaiveDate> {
+        self.index.keys().map(|value| value.date()).collect()
+    }
+
+    pub fn symbols(&self) -> BTreeSet<String> {
+        self.book.snapshots.iter().flat_map(|snapshot| &snapshot.actions)
+            .map(|action| action.symbol().to_owned()).collect()
+    }
+
+    pub fn snapshot_for(&self, ctx: &StrategyContext<'_>) -> Result<&SignalSnapshot, String> {
+        let snapshot = self.snapshot_at(ctx.execution_date, ctx.current_time(), ctx.is_lagged_execution())?;
+        if self.book.provenance == SignalProvenance::Observed && ctx.current_datetime().is_none() {
+            return Err("observed_signal_consumption_clock_missing".into());
+        }
+        let consumption_clock=ctx.current_datetime()
+            .unwrap_or(ctx.decision_date.and_hms_opt(15,0,0).expect("completed decision session"));
+        let lagged_daily=ctx.is_lagged_execution() && self.book.frequency==SignalFrequency::Daily;
+        if lagged_daily && shanghai(snapshot.input_as_of).date()>ctx.decision_date {
+            return Err("next_open_signal_contains_execution_session_inputs".into());
+        }
+        if shanghai(snapshot.input_available_at)>consumption_clock || shanghai(snapshot.signal_at)>consumption_clock {
+            return Err("signal_not_available_at_consumption_clock".into());
+        }
+        if self.book.provenance == SignalProvenance::Observed
+            && (shanghai(snapshot.generated_at)>consumption_clock || shanghai(snapshot.published_at)>consumption_clock) {
+            return Err("observed_signal_published_after_consumption_clock".into());
+        }
+        Ok(snapshot)
+    }
+
+    pub fn is_due_on(&self, execution_date: NaiveDate) -> bool {
+        self.index.range(execution_date.and_hms_opt(0,0,0).expect("session start")..)
+            .next().is_some_and(|(at,_)|at.date()==execution_date)
+    }
+
+    fn snapshot_at(&self, execution_date: NaiveDate, current_time: Option<NaiveTime>, lagged: bool) -> Result<&SignalSnapshot, String> {
+        let at = if self.book.frequency == SignalFrequency::Daily && lagged {
+            execution_date.and_hms_opt(9, 30, 0).expect("next open")
+        } else {
+            execution_date.and_time(current_time.unwrap_or(NaiveTime::from_hms_opt(15, 0, 0).expect("daily close")))
+        };
+        self.index.get(&at).map(|index| &self.book.snapshots[*index])
+            .ok_or_else(|| format!("signal_snapshot_missing_at_decision: {at}"))
+    }
+
+    pub fn intents(&self, ctx: &StrategyContext<'_>) -> Result<Vec<OrderIntent>, String> {
+        let snapshot = self.snapshot_for(ctx)?;
+        self.snapshot_intents(snapshot, ctx.portfolio)
+    }
+
+    fn snapshot_intents(&self, snapshot: &SignalSnapshot, portfolio: &PortfolioState) -> Result<Vec<OrderIntent>, String> {
+        let reason = format!("信号执行 version={} decision={}", self.book.version_sha256, snapshot.decision_at);
+        let mut intents = Vec::new();
+        let mut weights = BTreeMap::new();
+        for action in &snapshot.actions {
+            match action {
+                SignalAction::TargetWeight { symbol, weight } if snapshot.complete_targets => {
+                    weights.insert(symbol.clone(), *weight);
+                }
+                SignalAction::TargetWeight { symbol, weight } => intents.push(OrderIntent::TargetPercent {
+                    symbol: symbol.clone(), target_percent: *weight, reason: reason.clone(),
+                }),
+                SignalAction::Exit { symbol } => intents.push(OrderIntent::TargetPercent {
+                    symbol: symbol.clone(), target_percent: 0.0, reason: reason.clone(),
+                }),
+                SignalAction::Reduce { symbol, remaining_ratio } => {
+                    if let Some(position) = portfolio.position(symbol).filter(|position| position.quantity > 0) {
+                        let quantity = (f64::from(position.quantity) * remaining_ratio).floor() as u32;
+                        let target_quantity = i32::try_from(quantity).map_err(|_| "signal_reduction_quantity_overflow")?;
+                        intents.push(OrderIntent::TargetShares { symbol: symbol.clone(), target_quantity, reason: reason.clone() });
+                    }
+                }
+                SignalAction::BuyCondition { .. } => {}
+            }
+        }
+        if snapshot.complete_targets {
+            if weights.is_empty() {
+                for position in portfolio.positions().values().filter(|position| position.quantity > 0) {
+                    intents.push(OrderIntent::TargetPercent { symbol: position.symbol.clone(), target_percent: 0.0, reason: reason.clone() });
+                }
+            } else {
+                intents.push(OrderIntent::TargetPortfolioSmart { target_weights: weights,
+                    order_prices: None, valuation_prices: None, reason });
+            }
+        }
+        Ok(intents)
+    }
+
+    pub fn buy_denials(&self, ctx: &StrategyContext<'_>) -> Result<BTreeMap<String, String>, String> {
+        Ok(self.snapshot_for(ctx)?.actions.iter().filter_map(|action| match action {
+            SignalAction::BuyCondition { symbol, allowed: false } => Some((symbol.clone(), "信号买入条件未满足".into())),
+            _ => None,
+        }).collect())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use chrono::Duration;
+    use serde_json::json;
+
+    fn book() -> SignalBook {
+        let decision: DateTime<Utc> = "2025-01-07T09:30:00+08:00".parse().unwrap();
+        let source: DateTime<Utc> = "2025-01-06T15:00:00+08:00".parse().unwrap();
+        seal(SignalBook {
+            schema: SIGNAL_BOOK_SCHEMA.into(), version_sha256: "a".repeat(64), generator_sha256: "b".repeat(64),
+            model_sha256: Some("d".repeat(64)),
+            knowledge_cutoff: Some("2024-12-31T15:00:00+08:00".parse().unwrap()),
+            provenance: SignalProvenance::Reconstructed, frequency: SignalFrequency::Daily,
+            expected_decisions: vec![decision], snapshots: vec![SignalSnapshot {
+                signal_at: source,
+                decision_at: decision, input_as_of: source, input_available_at: source,
+                generated_at: decision + Duration::days(10), published_at: decision + Duration::days(10),
+                input_sha256: "c".repeat(64), complete_targets: true,
+                actions: vec![SignalAction::TargetWeight { symbol: "000001.SZ".into(), weight: 0.5 }],
+            }],
+        })
+    }
+
+    fn seal(mut book:SignalBook)->SignalBook {
+        book.version_sha256=book.content_sha256().unwrap();
+        book
+    }
+
+    fn at_context<T>(at: Option<NaiveDateTime>, action: impl FnOnce(&StrategyContext<'_>) -> T) -> T {
+        let data = crate::DataSet::from_components(vec![], vec![], vec![], vec![], vec![crate::BenchmarkSnapshot {
+            date:NaiveDate::from_ymd_opt(2025,1,6).unwrap(), benchmark:"clock-fixture".into(),
+            open:100.0, close:100.0, prev_close:100.0, volume:1,
+        }]).unwrap();
+        let portfolio = PortfolioState::new(10_000.0);
+        let symbols = BTreeSet::new();
+        action(&StrategyContext {
+            execution_date: NaiveDate::from_ymd_opt(2025,1,7).unwrap(),
+            decision_date: NaiveDate::from_ymd_opt(2025,1,6).unwrap(), decision_index:0,
+            data:&data, portfolio:&portfolio, futures_account:None, open_orders:&[],
+            dynamic_universe:None, subscriptions:&symbols, process_events:&[], active_process_event:None,
+            active_datetime:at, order_events:&[], fills:&[],
+        })
+    }
+
+    #[test]
+    fn observed_next_open_never_backdates_a_morning_publication_into_yesterdays_orders() {
+        let mut raw = book();
+        raw.provenance=SignalProvenance::Observed;
+        raw.snapshots[0].generated_at="2025-01-07T08:45:00+08:00".parse().unwrap();
+        raw.snapshots[0].published_at="2025-01-07T08:46:00+08:00".parse().unwrap();
+        let value=seal(raw).validate().unwrap();
+        for clock in ["2025-01-06T15:00:00", "2025-01-07T08:45:00"] {
+            at_context(Some(clock.parse().unwrap()), |ctx| {
+                assert_eq!(value.intents(ctx).unwrap_err(),"observed_signal_published_after_consumption_clock");
+                assert!(ctx.portfolio.positions().is_empty());
+            });
+        }
+        at_context(Some("2025-01-07T09:30:00".parse().unwrap()), |ctx| {
+            assert_eq!(value.intents(ctx).unwrap().len(),1);
+            assert!(ctx.portfolio.positions().is_empty());
+        });
+        at_context(None, |ctx| assert_eq!(value.intents(ctx).unwrap_err(),"observed_signal_consumption_clock_missing"));
+    }
+
+    #[test]
+    fn reconstruction_ignores_research_wall_clock_but_never_early_input_availability() {
+        let value=book().validate().unwrap();
+        at_context(Some("2025-01-06T15:00:00".parse().unwrap()), |ctx| assert!(value.intents(ctx).is_ok()));
+        at_context(Some("2025-01-06T14:59:59".parse().unwrap()), |ctx| {
+            assert_eq!(value.intents(ctx).unwrap_err(),"signal_not_available_at_consumption_clock");
+        });
+        let mut raw=book();
+        raw.snapshots[0].input_as_of="2025-01-07T08:30:00+08:00".parse().unwrap();
+        raw.snapshots[0].input_available_at=raw.snapshots[0].input_as_of;
+        raw.snapshots[0].signal_at=raw.snapshots[0].input_as_of;
+        let value=seal(raw).validate().unwrap();
+        at_context(Some("2025-01-07T09:30:00".parse().unwrap()), |ctx| {
+            assert_eq!(value.intents(ctx).unwrap_err(),"next_open_signal_contains_execution_session_inputs");
+        });
+    }
+
+    #[test]
+    fn historical_reconstruction_is_not_online_publication() {
+        let validated = book().validate().unwrap();
+        assert!(validated.require_observed().unwrap_err().contains("reconstructed"));
+        let mut observed = book();
+        observed.provenance = SignalProvenance::Observed;
+        assert!(observed.clone().validate().unwrap_err().contains("not_available"));
+        observed.snapshots[0].generated_at = observed.snapshots[0].decision_at;
+        observed.snapshots[0].published_at = observed.snapshots[0].decision_at;
+        seal(observed).validate().unwrap().require_observed().unwrap();
+    }
+
+    #[test]
+    fn rejects_future_inputs_and_model_knowledge() {
+        for field in 0..3 {
+            let mut value = book();
+            let future = value.snapshots[0].decision_at + Duration::seconds(1);
+            match field {
+                0 => value.snapshots[0].input_as_of = future,
+                1 => value.snapshots[0].input_available_at = future,
+                _ => value.knowledge_cutoff = Some(future),
+            }
+            assert!(value.validate().unwrap_err().contains("future"));
+        }
+    }
+
+    #[test]
+    fn rejects_quantities_prices_and_unknown_signal_fields() {
+        for name in ["quantity", "execution_price", "account_id", "cash"] {
+            let mut action = json!({"kind":"target_weight","symbol":"000001.SZ","weight":0.5});
+            action[name] = json!(100);
+            assert!(serde_json::from_value::<SignalAction>(action).is_err());
+        }
+    }
+
+    #[test]
+    fn coverage_and_duplicate_actions_fail_closed() {
+        let mut value = book();
+        value.expected_decisions.push(value.expected_decisions[0] + Duration::days(1));
+        assert!(value.validate().unwrap_err().contains("coverage"));
+        let mut value = book();
+        value.snapshots.push(value.snapshots[0].clone());
+        value.expected_decisions.push(value.expected_decisions[0]);
+        assert!(value.validate().unwrap_err().contains("duplicate"));
+        let mut value = book();
+        let repeated = value.snapshots[0].actions[0].clone();
+        value.snapshots[0].actions.push(repeated);
+        assert!(value.validate().unwrap_err().contains("duplicate"));
+    }
+
+    #[test]
+    fn rejects_overallocation_nonfinite_and_ambiguous_actions() {
+        for weight in [f64::NAN, f64::INFINITY, -0.1, 1.1] {
+            let mut value = book();
+            value.snapshots[0].actions[0] = SignalAction::TargetWeight { symbol: "000001.SZ".into(), weight };
+            assert!(value.validate().is_err());
+        }
+        let mut value = book();
+        value.snapshots[0].actions.push(SignalAction::TargetWeight { symbol:"000002.SZ".into(),weight:0.6 });
+        assert!(value.validate().unwrap_err().contains("exposure"));
+        let mut value = book();
+        value.snapshots[0].actions.push(SignalAction::Exit {symbol:"000001.SZ".into()});
+        assert!(value.validate().is_err());
+    }
+
+    #[test]
+    fn next_open_uses_decision_session_and_never_nearest_signal() {
+        let value = book().validate().unwrap();
+        let day = NaiveDate::from_ymd_opt(2025,1,7).unwrap();
+        assert!(value.snapshot_at(day, NaiveTime::from_hms_opt(9,30,0), true).is_ok());
+        assert!(value.snapshot_at(day, NaiveTime::from_hms_opt(14,59,0), false).is_err());
+        assert!(value.snapshot_at(day + Duration::days(1), None, true).is_err());
+    }
+
+    #[test]
+    fn reduction_is_resolved_from_each_accounts_actual_position() {
+        let mut raw = book();
+        raw.snapshots[0].complete_targets = false;
+        raw.snapshots[0].actions = vec![SignalAction::Reduce {symbol:"000001.SZ".into(),remaining_ratio:0.5}];
+        let value = seal(raw).validate().unwrap();
+        let day = NaiveDate::from_ymd_opt(2025,1,3).unwrap();
+        for (held, expected) in [(1000,500),(3000,1500)] {
+            let mut portfolio = PortfolioState::new(100_000.0);
+            portfolio.position_mut("000001.SZ").buy(day,held,10.0);
+            let result = value.snapshot_intents(&value.book.snapshots[0],&portfolio).unwrap();
+            assert!(matches!(result[0],OrderIntent::TargetShares {target_quantity,..} if target_quantity==expected));
+            assert_eq!(portfolio.position("000001.SZ").unwrap().quantity,held);
+        }
+        assert!(value.snapshot_intents(&value.book.snapshots[0],&PortfolioState::new(10_000.0)).unwrap().is_empty());
+    }
+
+    #[test]
+    fn empty_complete_snapshot_clears_only_that_accounts_holdings() {
+        let mut raw = book();
+        raw.snapshots[0].actions.clear();
+        let value = seal(raw).validate().unwrap();
+        let day = NaiveDate::from_ymd_opt(2025,1,3).unwrap();
+        let mut portfolio = PortfolioState::new(100_000.0);
+        portfolio.position_mut("000002.SZ").buy(day,200,10.0);
+        let result = value.snapshot_intents(&value.book.snapshots[0],&portfolio).unwrap();
+        assert!(matches!(&result[0],OrderIntent::TargetPercent {symbol,target_percent,..} if symbol=="000002.SZ" && *target_percent==0.0));
+    }
+
+    #[test]
+    fn platform_spec_consumes_book_without_running_another_selection() {
+        let spec = json!({"signalBook":book(),"runtimeExpressions":{"trading":{"actions":[{"kind":"consume_signal"}]}}});
+        let config = crate::platform_strategy_spec::platform_expr_config_from_value("signal-fixture","000001.SZ",&spec).unwrap();
+        assert!(!config.rotation_enabled && config.signal_book.is_some());
+        assert!(matches!(config.explicit_actions.as_slice(),[crate::PlatformTradeAction::ConsumeSignal]));
+    }
+
+    #[test]
+    fn changed_valid_contents_must_not_reuse_a_version_hash() {
+        let mut raw=book();
+        raw.snapshots[0].actions=vec![SignalAction::TargetWeight{symbol:"000001.SZ".into(),weight:0.4}];
+        assert_eq!(raw.clone().validate().unwrap_err(),"signal_book_content_hash_mismatch");
+        seal(raw).validate().unwrap();
+    }
+
+    #[test]
+    fn completed_daily_inputs_may_be_published_after_market_close() {
+        let mut raw=book();
+        raw.expected_decisions=vec!["2026-07-07T09:30:00+08:00".parse().unwrap()];
+        raw.snapshots[0].decision_at=raw.expected_decisions[0];
+        raw.snapshots[0].input_as_of="2026-07-06T15:30:00+08:00".parse().unwrap();
+        raw.snapshots[0].input_available_at="2026-07-06T16:00:00+08:00".parse().unwrap();
+        raw.snapshots[0].signal_at=raw.snapshots[0].input_available_at;
+        raw.snapshots[0].generated_at=raw.snapshots[0].input_available_at;
+        raw.snapshots[0].published_at=raw.snapshots[0].generated_at;
+        raw.provenance=SignalProvenance::Observed;
+        seal(raw).validate().unwrap().require_observed().unwrap();
+    }
+}

crates/fidc-core/src/stock_pool_candidates.rs

@@ -0,0 +1,229 @@
+//! Candidate provenance and ordering; contains no market-data or broker I/O.
+use std::collections::{BTreeMap, BTreeSet};
+
+use chrono::NaiveDate;
+use serde::{Deserialize, Serialize};
+
+pub const CANDIDATE_SOURCES_SCHEMA: u32 = 1;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum CandidateSourceMode {
+    Manual,
+    FilteredManual,
+    Automatic,
+    Mixed,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Default, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum CandidateSourcePriority {
+    #[default]
+    ManualFirst,
+    AutomaticFirst,
+    ListOrder,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct CandidateSourcePolicy {
+    pub schema_version: u32,
+    pub mode: CandidateSourceMode,
+    #[serde(default)]
+    pub priority: CandidateSourcePriority,
+    #[serde(default)]
+    pub merged_order: Vec<String>,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct CandidateMember {
+    pub symbol: String,
+    pub manual: bool,
+    pub automatic: bool,
+}
+
+fn symbols(values: &[String], label: &str) -> Result<Vec<String>, String> {
+    let mut seen = BTreeSet::new();
+    values.iter().map(|value| {
+        let symbol = value.trim().to_ascii_uppercase();
+        if !symbol.rsplit_once('.').is_some_and(|(code, exchange)| {
+            code.len() == 6 && code.bytes().all(|byte| byte.is_ascii_digit())
+                && matches!(exchange, "SH" | "SZ" | "BJ")
+        }) {
+            return Err(format!("{label}: invalid qualified security code {value}"));
+        }
+        if !seen.insert(symbol.clone()) {
+            return Err(format!("{label}: duplicate security {symbol}"));
+        }
+        Ok(symbol)
+    }).collect()
+}
+
+impl CandidateSourcePolicy {
+    pub fn validate(&self) -> Result<(), String> {
+        if self.schema_version != CANDIDATE_SOURCES_SCHEMA {
+            return Err("candidate_sources schema_version must be 1".into());
+        }
+        symbols(&self.merged_order, "candidate_sources.merged_order")?;
+        if self.mode != CandidateSourceMode::Mixed && self.priority != CandidateSourcePriority::ManualFirst {
+            return Err("candidate source priority only applies to mixed sources".into());
+        }
+        if self.priority != CandidateSourcePriority::ListOrder && !self.merged_order.is_empty() {
+            return Err("merged_order requires list_order priority".into());
+        }
+        Ok(())
+    }
+
+    pub fn uses_screen(&self) -> bool {
+        self.mode != CandidateSourceMode::Manual
+    }
+
+    pub fn validate_screen_binding(&self, manual: &[String], has_screen: bool) -> Result<(), String> {
+        self.validate()?;
+        symbols(manual, "manual candidates")?;
+        if self.uses_screen() != has_screen {
+            return Err("candidate source mode and screen contract must agree".into());
+        }
+        if self.mode == CandidateSourceMode::FilteredManual && manual.is_empty() {
+            return Err("filtered_manual requires manual members; an empty scope must not become all-market".into());
+        }
+        Ok(())
+    }
+}
+
+/// Overlap between two valid sources denotes one member with both provenance
+/// flags. Duplicates *within* a source are invalid evidence, not fixed by dedup.
+pub fn resolve_candidates(
+    policy: &CandidateSourcePolicy,
+    manual: &[String],
+    automatic: Option<&[String]>,
+) -> Result<Vec<CandidateMember>, String> {
+    policy.validate_screen_binding(manual, automatic.is_some())?;
+    let manual = symbols(manual, "manual candidates")?;
+    let automatic = automatic.map(|values| symbols(values, "automatic candidates")).transpose()?.unwrap_or_default();
+    let manual_set = manual.iter().cloned().collect::<BTreeSet<_>>();
+    let auto_set = automatic.iter().cloned().collect::<BTreeSet<_>>();
+    if policy.mode == CandidateSourceMode::FilteredManual && !auto_set.is_subset(&manual_set) {
+        return Err("filtered_manual snapshot contains a security outside the manual scope".into());
+    }
+    let mut ordered = match policy.mode {
+        CandidateSourceMode::Manual => manual.clone(),
+        CandidateSourceMode::FilteredManual | CandidateSourceMode::Automatic => automatic.clone(),
+        CandidateSourceMode::Mixed => {
+            let (first, second) = if policy.priority == CandidateSourcePriority::AutomaticFirst {
+                (&automatic, &manual)
+            } else { (&manual, &automatic) };
+            let mut union = first.clone();
+            let mut seen = first.iter().cloned().collect::<BTreeSet<_>>();
+            union.extend(second.iter().filter(|symbol| seen.insert((*symbol).clone())).cloned());
+            union
+        }
+    };
+    if policy.priority == CandidateSourcePriority::ListOrder {
+        let present = ordered.iter().cloned().collect::<BTreeSet<_>>();
+        let prefix = symbols(&policy.merged_order, "candidate_sources.merged_order")?
+            .into_iter().filter(|symbol| present.contains(symbol)).collect::<Vec<_>>();
+        let selected = prefix.iter().cloned().collect::<BTreeSet<_>>();
+        let tail = ordered.into_iter().filter(|symbol| !selected.contains(symbol));
+        ordered = prefix.into_iter().chain(tail).collect();
+    }
+    Ok(ordered.into_iter().map(|symbol| CandidateMember {
+        manual: manual_set.contains(&symbol), automatic: auto_set.contains(&symbol), symbol,
+    }).collect())
+}
+
+/// Raw daily automatic candidates remain unchanged. Every resolved list is
+/// derived by the shared kernel; absent dates never inherit yesterday's list.
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct CandidateSourceBook {
+    pub schema_version: u32,
+    pub policy: CandidateSourcePolicy,
+    pub manual_symbols: Vec<String>,
+    pub automatic_symbols_by_date: BTreeMap<NaiveDate, Vec<String>>,
+    pub source_snapshot_sha256: String,
+    pub source_coverage_sha256: String,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub execution_symbols: Option<Vec<String>>,
+}
+
+impl CandidateSourceBook {
+    pub fn resolve(&self) -> Result<BTreeMap<NaiveDate, Vec<CandidateMember>>, String> {
+        if self.schema_version != CANDIDATE_SOURCES_SCHEMA || !self.policy.uses_screen() {
+            return Err("candidate source book requires schema 1 and a screened source".into());
+        }
+        for value in [&self.source_snapshot_sha256, &self.source_coverage_sha256] {
+            if value.len() != 64 || !value.bytes().all(|byte| byte.is_ascii_hexdigit()) {
+                return Err("candidate source book requires snapshot and coverage SHA256".into());
+            }
+        }
+        if self.automatic_symbols_by_date.is_empty() {
+            return Err("candidate source book requires explicit covered trading dates".into());
+        }
+        let scope = self.execution_symbols.as_ref().map(|values| symbols(values, "candidate execution scope")
+            .map(|values| values.into_iter().collect::<BTreeSet<_>>())).transpose()?;
+        self.automatic_symbols_by_date.iter().map(|(day, values)| {
+            resolve_candidates(&self.policy, &self.manual_symbols, Some(values))
+                .map(|members| (*day, members.into_iter().filter(|member| scope.as_ref().is_none_or(|scope| scope.contains(&member.symbol))).collect()))
+        }).collect()
+    }
+
+    pub fn resolved_symbols(&self) -> Result<BTreeMap<NaiveDate, Vec<String>>, String> {
+        Ok(self.resolve()?.into_iter().map(|(date, values)|
+            (date, values.into_iter().map(|member| member.symbol).collect())).collect())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    fn list(values: &[&str]) -> Vec<String> { values.iter().map(|value| value.to_string()).collect() }
+    fn policy(mode: CandidateSourceMode, priority: CandidateSourcePriority) -> CandidateSourcePolicy {
+        CandidateSourcePolicy { schema_version: 1, mode, priority, merged_order: vec![] }
+    }
+    #[test]
+    fn mixed_sources_preserve_priority_and_both_provenances() {
+        let manual = list(&["600000.SH", "000001.SZ"]);
+        let automatic = list(&["000002.SZ", "000001.SZ"]);
+        for (priority, expected) in [
+            (CandidateSourcePriority::ManualFirst, list(&["600000.SH", "000001.SZ", "000002.SZ"])),
+            (CandidateSourcePriority::AutomaticFirst, list(&["000002.SZ", "000001.SZ", "600000.SH"])),
+        ] {
+            let result = resolve_candidates(&policy(CandidateSourceMode::Mixed, priority), &manual, Some(&automatic)).unwrap();
+            assert_eq!(result.iter().map(|value| value.symbol.clone()).collect::<Vec<_>>(), expected);
+            let overlap = result.iter().find(|value| value.symbol == "000001.SZ").unwrap();
+            assert!(overlap.manual && overlap.automatic);
+        }
+    }
+    #[test]
+    fn list_order_reuses_explicit_prefix_and_appends_new_candidates() {
+        let mut p = policy(CandidateSourceMode::Mixed, CandidateSourcePriority::ListOrder);
+        p.merged_order = list(&["000002.SZ", "600036.SH", "600000.SH"]);
+        let result = resolve_candidates(&p, &list(&["600000.SH", "000001.SZ"]), Some(&list(&["000002.SZ", "000003.SZ"]))).unwrap();
+        assert_eq!(result.into_iter().map(|row| row.symbol).collect::<Vec<_>>(), list(&["000002.SZ", "600000.SH", "000001.SZ", "000003.SZ"]));
+    }
+    #[test]
+    fn missing_snapshot_duplicate_input_and_empty_filtered_scope_fail() {
+        let p = policy(CandidateSourceMode::Mixed, CandidateSourcePriority::ManualFirst);
+        assert!(resolve_candidates(&p, &[], None).is_err());
+        assert!(resolve_candidates(&p, &[], Some(&list(&["000001.SZ", "000001.sz"]))).is_err());
+        let p = policy(CandidateSourceMode::FilteredManual, CandidateSourcePriority::ManualFirst);
+        assert!(resolve_candidates(&p, &[], Some(&[])).unwrap_err().contains("all-market"));
+        assert!(resolve_candidates(&p, &list(&["000001.SZ"]), Some(&list(&["600000.SH"]))).is_err());
+    }
+    #[test]
+    fn zero_automatic_day_keeps_manual_members_without_inheriting_old_auto_targets() {
+        let day1 = NaiveDate::from_ymd_opt(2026, 9, 9).unwrap();
+        let day2 = NaiveDate::from_ymd_opt(2026, 9, 10).unwrap();
+        let book = CandidateSourceBook { schema_version: 1,
+            policy: policy(CandidateSourceMode::Mixed, CandidateSourcePriority::AutomaticFirst),
+            manual_symbols: list(&["510300.SH"]),
+            automatic_symbols_by_date: BTreeMap::from([(day1, list(&["000001.SZ"])), (day2, vec![])]),
+            source_snapshot_sha256: "a".repeat(64), source_coverage_sha256: "b".repeat(64), execution_symbols:None };
+        let result = book.resolved_symbols().unwrap();
+        assert_eq!(result[&day1], list(&["000001.SZ", "510300.SH"]));
+        assert_eq!(result[&day2], list(&["510300.SH"]));
+        let mut auto = book; auto.policy = policy(CandidateSourceMode::Automatic, CandidateSourcePriority::ManualFirst);
+        assert!(auto.resolved_symbols().unwrap()[&day2].is_empty());
+    }
+}

crates/fidc-core/src/stock_pool_frozen.rs

@@ -0,0 +1,150 @@
+//! Dated non-tradability and valuation are separate from execution quotations.
+use super::*;
+
+pub(super) fn validate(
+    signal_date: NaiveDate,
+    constraints: &StockPoolDecisionConstraints,
+    current: &BTreeMap<String, (Decimal, Decimal, Decimal)>,
+) -> Result<(), String> {
+    for (symbol, fact) in &constraints.frozen_positions {
+        if constraints.execution_date != Some(fact.trade_date)
+            || fact.trade_date < signal_date
+            || fact.reason != "paused"
+            || fact.valuation_price <= Decimal::ZERO
+            || current.get(symbol).is_none_or(|row| row.0 <= Decimal::ZERO)
+        {
+            return Err(format!("stock_pool_frozen_position_invalid:{symbol}"));
+        }
+    }
+    if constraints
+        .prior_target_weights
+        .iter()
+        .any(|(symbol, weight)| {
+            normalize_stock_symbol(symbol).as_ref() != Some(symbol)
+                || !(0..=10_000).contains(weight)
+        })
+    {
+        return Err("stock_pool_prior_target_weights_invalid".into());
+    }
+    Ok(())
+}
+
+pub(super) fn valuation(
+    symbol: &str,
+    quotes: &HashMap<String, &MarketSnapshot>,
+    frozen: &BTreeMap<String, FrozenStockPoolPosition>,
+) -> Result<Decimal, String> {
+    frozen
+        .get(symbol)
+        .map(|fact| fact.valuation_price)
+        .or_else(|| quotes.get(symbol).map(|quote| quote.last_price))
+        .filter(|price| *price > Decimal::ZERO)
+        .ok_or_else(|| format!("{symbol} confirmed holding valuation missing"))
+}
+
+pub(super) fn weights(
+    original: &[String],
+    active: &[String],
+    members: &[StockPoolMemberSpec],
+    explicit: &BTreeMap<String, i32>,
+    constraints: &StockPoolDecisionConstraints,
+    reserved_slots: usize,
+    target_count: usize,
+) -> Result<BTreeMap<String, i32>, String> {
+    let count = original.len() + reserved_slots;
+    let order = members
+        .iter()
+        .map(|member| (&member.symbol, member.requested_order))
+        .collect::<BTreeMap<_, _>>();
+    let mut original_budget_symbols = original.to_vec();
+    for symbol in constraints.frozen_positions.keys() {
+        if order.contains_key(symbol) && !original_budget_symbols.contains(symbol) {
+            original_budget_symbols.push(symbol.clone());
+        }
+    }
+    if original_budget_symbols.len() != original.len() {
+        original_budget_symbols
+            .sort_by_key(|symbol| order.get(symbol).copied().unwrap_or(i32::MAX));
+    }
+    let initial = original_budget_symbols
+        .iter()
+        .enumerate()
+        .map(|(index, symbol)| {
+            let weight = if explicit.is_empty() {
+                if count == 0 {
+                    0
+                } else {
+                    10_000 / count as i32 + i32::from(index < 10_000 % count)
+                }
+            } else {
+                *explicit.get(symbol).unwrap_or(&0)
+            };
+            (symbol.clone(), weight)
+        })
+        .collect::<Vec<_>>();
+    let mut frozen = BTreeMap::new();
+    for symbol in constraints.frozen_positions.keys() {
+        let weight = explicit
+            .get(symbol)
+            .copied()
+            .or_else(|| constraints.prior_target_weights.get(symbol).copied())
+            .or_else(|| {
+                initial
+                    .iter()
+                    .find(|(key, _)| key == symbol)
+                    .map(|(_, weight)| *weight)
+            })
+            .ok_or_else(|| format!("stock_pool_frozen_position_target_weight_missing:{symbol}"))?;
+        frozen.insert(symbol.clone(), weight);
+    }
+    let frozen_total = frozen.values().copied().sum::<i32>();
+    if frozen_total > 10_000 {
+        return Err("stock_pool_frozen_position_weights_exceed_budget".into());
+    }
+    let mut free = initial
+        .into_iter()
+        .filter(|(symbol, _)| !frozen.contains_key(symbol))
+        .map(|(symbol, weight)| (symbol, weight as u32))
+        .collect::<Vec<_>>();
+    let total = free.iter().map(|(_, weight)| *weight).sum::<u32>();
+    let available = (10_000 - frozen_total) as u32;
+    // A paused holding removed from today's candidates still owns its prior
+    // budget. Scale only the new tradable allocation, never the frozen leg.
+    if total > available {
+        let mut remainder = available;
+        for (_, weight) in &mut free {
+            *weight = (u64::from(*weight) * u64::from(available) / u64::from(total)) as u32;
+            remainder -= *weight;
+        }
+        for (_, weight) in free.iter_mut().take(remainder as usize) {
+            *weight += 1;
+        }
+    }
+    let excluded = free
+        .iter()
+        .filter(|(symbol, _)| !active.contains(symbol))
+        .map(|(symbol, _)| symbol.clone())
+        .collect();
+    let candidates = active
+        .iter()
+        .filter(|symbol| !frozen.contains_key(*symbol))
+        .cloned()
+        .collect::<Vec<_>>();
+    let allocated = crate::platform_expr_strategy::replenish_target_weight_bps(
+        &free,
+        &candidates,
+        &excluded,
+        target_count.saturating_sub(
+            frozen
+                .keys()
+                .filter(|symbol| original.contains(symbol))
+                .count(),
+        ),
+    );
+    frozen.extend(
+        allocated
+            .into_iter()
+            .map(|(symbol, weight)| (symbol, weight as i32)),
+    );
+    Ok(frozen)
+}

crates/fidc-core/src/stock_pool_index_cap.rs

@@ -0,0 +1,93 @@
+//! Index exposure is independent of relative-weight maintenance. Reduce the
+//! existing proportions only when the portfolio exceeds its index budget.
+use super::*;
+
+pub(super) struct IndexCapTarget {
+    pub quantity: Decimal,
+    pub blocked_by_t1: bool,
+}
+
+pub(super) fn remaining_index_targets(
+    current: &BTreeMap<String, (Decimal, Decimal, Decimal)>,
+    members: &HashMap<String, &StockPoolMemberSpec>,
+    automatic: &BTreeMap<String, crate::holding_policy::AutomaticTradePermission>,
+    already_planned: &[StockPoolPlanRow],
+    quotes: &HashMap<String, &MarketSnapshot>,
+    frozen: &BTreeMap<String, FrozenStockPoolPosition>,
+    budget: Decimal,
+) -> Result<BTreeMap<String, IndexCapTarget>, String> {
+    struct Entry {
+        symbol: String,
+        quantity: Decimal,
+        minimum: Decimal,
+        price: Decimal,
+    }
+    let other = already_planned
+        .iter()
+        .map(|row| (&row.symbol, row))
+        .collect::<BTreeMap<_, _>>();
+    let mut fixed = Decimal::ZERO;
+    let mut entries = Vec::new();
+    for (symbol, (quantity, closable, _)) in current.iter().filter(|(_, row)| row.0 > Decimal::ZERO)
+    {
+        let price = super::frozen::valuation(symbol, quotes, frozen)?;
+        let minimum = (*quantity - *closable).max(Decimal::ZERO);
+        let remaining = other
+            .get(symbol)
+            .map(|row| row.target_quantity.min(*quantity))
+            .unwrap_or(*quantity)
+            .max(minimum);
+        if frozen.contains_key(symbol)
+            || automatic
+                .get(symbol)
+                .is_some_and(|permission| permission.sell_denial.is_some())
+        {
+            fixed += *quantity * price;
+        } else if members.contains_key(symbol) && remaining > Decimal::ZERO {
+            entries.push(Entry {
+                symbol: symbol.clone(),
+                quantity: remaining,
+                minimum,
+                price,
+            });
+        } else {
+            fixed += remaining * price;
+        }
+    }
+    let mut remaining = entries
+        .iter()
+        .map(|row| row.quantity * row.price)
+        .sum::<Decimal>();
+    let mut available = (budget - fixed).max(Decimal::ZERO);
+    if remaining <= available {
+        return Ok(BTreeMap::new());
+    }
+    // The highest non-sellable proportions are fixed first; the remainder
+    // keeps its existing relative weights. No planned sale funds a new buy.
+    entries.sort_by(|left, right| {
+        (right.minimum / right.quantity)
+            .cmp(&(left.minimum / left.quantity))
+            .then_with(|| left.symbol.cmp(&right.symbol))
+    });
+    let mut result = BTreeMap::new();
+    for row in entries {
+        let scale = if remaining > Decimal::ZERO {
+            (available / remaining).min(Decimal::ONE)
+        } else {
+            Decimal::ZERO
+        };
+        let desired = (row.quantity * scale).floor();
+        let blocked = desired < row.minimum;
+        let target = desired.max(row.minimum).min(row.quantity);
+        remaining -= row.quantity * row.price;
+        available = (available - target * row.price).max(Decimal::ZERO);
+        result.insert(
+            row.symbol,
+            IndexCapTarget {
+                quantity: target,
+                blocked_by_t1: blocked,
+            },
+        );
+    }
+    Ok(result)
+}

crates/fidc-core/src/stock_pool_index_policy.rs

@@ -0,0 +1,344 @@
+//! Explicit index timing, shared by historical and online stock-pool planners.
+//! Inputs are completed official sessions, not a shortened available-row window.
+use chrono::NaiveDate;
+use serde::{Deserialize, Serialize};
+use sha2::{Digest, Sha256};
+
+#[derive(Debug, Clone, Default, PartialEq, Serialize, Deserialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct MarketTimingPolicy {
+    pub enabled: bool,
+    pub index_code: Option<String>,
+    pub fast_window: Option<usize>,
+    pub slow_window: Option<usize>,
+    pub volatility_window: Option<usize>,
+    pub drawdown_window: Option<usize>,
+    pub bull_exposure: Option<f64>,
+    pub bear_exposure: Option<f64>,
+    pub volatility_threshold: Option<f64>,
+    pub volatility_cap: Option<f64>,
+    pub drawdown_threshold: Option<f64>,
+    pub drawdown_cap: Option<f64>,
+}
+
+impl MarketTimingPolicy {
+    pub fn from_allocation(value: &serde_json::Value) -> Result<Self, String> {
+        let raw = value.get("market_timing").filter(|value| !value.is_null());
+        let policy = raw
+            .map(|raw| serde_json::from_value::<Self>(raw.clone()))
+            .transpose()
+            .map_err(|error| format!("market_timing_invalid:{error}"))?
+            .unwrap_or_default();
+        policy.validate()?;
+        Ok(policy)
+    }
+
+    pub fn validate(&self) -> Result<(), String> {
+        if let Some(index) = &self.index_code {
+            let valid = index.split_once('.').is_some_and(|(code, exchange)| {
+                (6..=12).contains(&code.len())
+                    && code
+                        .bytes()
+                        .all(|v| v.is_ascii_uppercase() || v.is_ascii_digit())
+                    && matches!(exchange, "SH" | "SZ" | "CSI" | "CNI")
+            });
+            if !valid {
+                return Err("market_timing_index_code_invalid".into());
+            }
+        } else if self.enabled {
+            return Err("market_timing_index_code_required".into());
+        }
+        for (key, value) in [
+            ("fast_window", self.fast_window),
+            ("slow_window", self.slow_window),
+            ("volatility_window", self.volatility_window),
+            ("drawdown_window", self.drawdown_window),
+        ] {
+            match value {
+                Some(value) if !(2..=250).contains(&value) => {
+                    return Err(format!("market_timing_{key}_must_be_2_to_250"));
+                }
+                None if self.enabled => return Err(format!("market_timing_{key}_required")),
+                _ => {}
+            }
+        }
+        if let (Some(fast), Some(slow)) = (self.fast_window, self.slow_window) {
+            if fast >= slow {
+                return Err("market_timing_fast_window_must_be_less_than_slow_window".into());
+            }
+        }
+        for (key, value) in [
+            ("bull_exposure", self.bull_exposure),
+            ("bear_exposure", self.bear_exposure),
+            ("volatility_threshold", self.volatility_threshold),
+            ("volatility_cap", self.volatility_cap),
+            ("drawdown_threshold", self.drawdown_threshold),
+            ("drawdown_cap", self.drawdown_cap),
+        ] {
+            match value {
+                Some(value) if !value.is_finite() || !(0.0..=1.0).contains(&value) => {
+                    return Err(format!("market_timing_{key}_must_be_in_0_to_1"));
+                }
+                None if self.enabled => return Err(format!("market_timing_{key}_required")),
+                _ => {}
+            }
+        }
+        Ok(())
+    }
+
+    pub fn required_history(&self) -> Result<usize, String> {
+        self.validate()?;
+        if !self.enabled {
+            return Ok(0);
+        }
+        Ok(self
+            .slow_window
+            .unwrap()
+            .max(self.volatility_window.unwrap() + 1)
+            .max(self.drawdown_window.unwrap()))
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct IndexClose {
+    pub date: NaiveDate,
+    pub close: f64,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct MarketTimingInput {
+    pub index_code: String,
+    pub as_of_date: NaiveDate,
+    pub official_dates: Vec<NaiveDate>,
+    pub closes: Vec<IndexClose>,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct MarketTimingEvaluation {
+    pub index_code: String,
+    pub as_of_date: NaiveDate,
+    pub window_start: NaiveDate,
+    pub session_count: usize,
+    pub fast_ma: f64,
+    pub slow_ma: f64,
+    pub volatility: f64,
+    pub drawdown: f64,
+    pub exposure: f64,
+    pub reason_codes: Vec<String>,
+    pub policy_sha256: String,
+    pub input_sha256: String,
+    pub kernel_sha256: String,
+}
+
+pub fn implementation_sha256() -> String {
+    format!(
+        "{:x}",
+        Sha256::digest(include_bytes!("stock_pool_index_policy.rs"))
+    )
+}
+
+pub fn evaluate(
+    policy: &MarketTimingPolicy,
+    input: &MarketTimingInput,
+    decision_date: NaiveDate,
+) -> Result<MarketTimingEvaluation, String> {
+    let needed = policy.required_history()?;
+    if needed == 0 {
+        return Err("market_timing_disabled_has_no_evaluation".into());
+    }
+    if policy.index_code.as_deref() != Some(input.index_code.as_str()) {
+        return Err("market_timing_input_index_mismatch".into());
+    }
+    if input.as_of_date > decision_date {
+        return Err("market_timing_future_input".into());
+    }
+    if input.official_dates.len() != needed
+        || input.closes.len() != needed
+        || input.official_dates.last() != Some(&input.as_of_date)
+        || input
+            .official_dates
+            .windows(2)
+            .any(|pair| pair[0] >= pair[1])
+    {
+        return Err("market_timing_official_calendar_incomplete".into());
+    }
+    if input
+        .closes
+        .iter()
+        .zip(&input.official_dates)
+        .any(|(row, date)| row.date != *date || !row.close.is_finite() || row.close <= 0.)
+    {
+        return Err("market_timing_completed_index_rows_incomplete".into());
+    }
+    let closes = input.closes.iter().map(|row| row.close).collect::<Vec<_>>();
+    let mean = |window: usize| closes[needed - window..].iter().sum::<f64>() / window as f64;
+    let fast_ma = mean(policy.fast_window.unwrap());
+    let slow_ma = mean(policy.slow_window.unwrap());
+    let returns = closes[needed - policy.volatility_window.unwrap() - 1..]
+        .windows(2)
+        .map(|pair| pair[1] / pair[0] - 1.)
+        .collect::<Vec<_>>();
+    let average = returns.iter().sum::<f64>() / returns.len() as f64;
+    let volatility = (returns
+        .iter()
+        .map(|value| (value - average).powi(2))
+        .sum::<f64>()
+        / (returns.len() - 1) as f64)
+        .sqrt();
+    let peak = closes[needed - policy.drawdown_window.unwrap()..]
+        .iter()
+        .copied()
+        .fold(f64::NEG_INFINITY, f64::max);
+    let drawdown = 1. - closes[needed - 1] / peak;
+    let bullish = fast_ma > slow_ma;
+    let mut exposure = if bullish {
+        policy.bull_exposure.unwrap()
+    } else {
+        policy.bear_exposure.unwrap()
+    };
+    let mut reason_codes = vec![
+        if bullish {
+            "fast_above_slow"
+        } else {
+            "fast_not_above_slow"
+        }
+        .into(),
+    ];
+    if volatility >= policy.volatility_threshold.unwrap() {
+        exposure = exposure.min(policy.volatility_cap.unwrap());
+        reason_codes.push("volatility_cap".into());
+    }
+    if drawdown >= policy.drawdown_threshold.unwrap() {
+        exposure = exposure.min(policy.drawdown_cap.unwrap());
+        reason_codes.push("drawdown_cap".into());
+    }
+    if [fast_ma, slow_ma, volatility, drawdown, exposure]
+        .iter()
+        .any(|value| !value.is_finite())
+    {
+        return Err("market_timing_nonfinite_result".into());
+    }
+    let hash = |value: &serde_json::Value| -> Result<String, String> {
+        Ok(format!(
+            "{:x}",
+            Sha256::digest(serde_json::to_vec(value).map_err(|error| error.to_string())?)
+        ))
+    };
+    Ok(MarketTimingEvaluation {
+        index_code: input.index_code.clone(),
+        as_of_date: input.as_of_date,
+        window_start: input.official_dates[0],
+        session_count: needed,
+        fast_ma,
+        slow_ma,
+        volatility,
+        drawdown,
+        exposure,
+        reason_codes,
+        policy_sha256: hash(&serde_json::to_value(policy).map_err(|error| error.to_string())?)?,
+        input_sha256: hash(&serde_json::to_value(input).map_err(|error| error.to_string())?)?,
+        kernel_sha256: implementation_sha256(),
+    })
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    fn policy() -> MarketTimingPolicy {
+        serde_json::from_value(serde_json::json!({"enabled":true,"index_code":"000300.SH","fast_window":10,"slow_window":30,
+        "volatility_window":20,"drawdown_window":60,"bull_exposure":1.0,"bear_exposure":0.3,"volatility_threshold":0.025,
+        "volatility_cap":0.3,"drawdown_threshold":0.08,"drawdown_cap":0.2})).unwrap()
+    }
+    fn input(values: Vec<f64>) -> MarketTimingInput {
+        let dates = (0..values.len())
+            .map(|i| {
+                NaiveDate::from_ymd_opt(2026, 1, 1).unwrap() + chrono::Duration::days(i as i64)
+            })
+            .collect::<Vec<_>>();
+        MarketTimingInput {
+            index_code: "000300.SH".into(),
+            as_of_date: *dates.last().unwrap(),
+            closes: dates
+                .iter()
+                .zip(values)
+                .map(|(date, close)| IndexClose { date: *date, close })
+                .collect(),
+            official_dates: dates,
+        }
+    }
+    #[test]
+    fn trend_and_caps_match_the_declared_math_and_keep_zero_meaningful() {
+        for (prices, expected) in [
+            ((0..60).map(|i| 100. + i as f64).collect(), 1.),
+            ((0..60).map(|i| 200. - i as f64).collect(), 0.2),
+            (
+                (0..59)
+                    .map(|i| 100. + i as f64 * 0.1)
+                    .chain([150.])
+                    .collect(),
+                0.3,
+            ),
+        ] {
+            let input = input(prices);
+            let result = evaluate(&policy(), &input, input.as_of_date).unwrap();
+            assert_eq!(result.exposure, expected);
+            assert_eq!(result.session_count, 60);
+            assert_eq!(result.input_sha256.len(), 64);
+        }
+        let input = input(vec![100.; 60]);
+        let mut zero = policy();
+        zero.bear_exposure = Some(0.);
+        assert_eq!(
+            evaluate(&zero, &input, input.as_of_date).unwrap().exposure,
+            0.
+        );
+    }
+    #[test]
+    fn missing_or_duplicate_or_future_rows_never_shorten_the_window() {
+        let base = input(vec![100.; 60]);
+        let mut invalid = base.clone();
+        invalid.closes.remove(5);
+        assert!(evaluate(&policy(), &invalid, base.as_of_date).is_err());
+        let mut invalid = base.clone();
+        invalid.closes[5].date = invalid.closes[4].date;
+        assert!(evaluate(&policy(), &invalid, base.as_of_date).is_err());
+        let mut invalid = base.clone();
+        invalid.closes[5].close = f64::NAN;
+        assert!(evaluate(&policy(), &invalid, base.as_of_date).is_err());
+        assert!(
+            evaluate(
+                &policy(),
+                &base,
+                base.as_of_date - chrono::Duration::days(1)
+            )
+            .is_err()
+        );
+        let mut invalid = base.clone();
+        invalid.index_code = "000852.SH".into();
+        assert!(evaluate(&policy(), &invalid, base.as_of_date).is_err());
+    }
+    #[test]
+    fn disabled_is_optional_but_enabled_parameters_are_not_invented() {
+        assert_eq!(
+            MarketTimingPolicy::from_allocation(&serde_json::Value::Null)
+                .unwrap()
+                .required_history()
+                .unwrap(),
+            0
+        );
+        assert!(
+            MarketTimingPolicy::from_allocation(
+                &serde_json::json!({"market_timing":{"enabled":true}})
+            )
+            .is_err()
+        );
+        let mut invalid = policy();
+        invalid.fast_window = invalid.slow_window;
+        assert!(invalid.validate().is_err());
+        let mut invalid = policy();
+        invalid.volatility_window = Some(250);
+        assert_eq!(invalid.required_history().unwrap(), 251);
+    }
+}

crates/fidc-core/src/stock_pool_indicators.rs

@@ -0,0 +1,179 @@
+//! Shared causal indicator calculation for stock-pool screening.
+use std::collections::{BTreeMap, BTreeSet};
+use chrono::NaiveDate;
+use serde::{Deserialize, Serialize};
+use serde_json::json;
+
+use crate::factor_events::{self, Expr, Frame};
+
+pub fn implementation_sha256() -> String {
+    use sha2::{Digest,Sha256};
+    let mut identity=Sha256::new();
+    identity.update(include_bytes!("stock_pool_indicators.rs"));
+    identity.update(factor_events::catalog()["expression_kernel_sha256"].as_str().expect("native kernel identity"));
+    format!("{:x}",identity.finalize())
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct IndicatorSpec {
+    pub indicator: String,
+    pub field: String,
+    pub window: usize,
+    #[serde(default)]
+    pub output: Option<String>,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct InputSeries {
+    pub frame: Frame,
+    /// Source-admitted historical suspension/lifecycle gaps, not guessed from
+    /// missing prices. The pure endpoint never certifies those source facts.
+    #[serde(default)]
+    pub admitted_missing_dates: BTreeSet<NaiveDate>,
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct Request {
+    pub specs: BTreeMap<String, IndicatorSpec>,
+    pub series: Vec<InputSeries>,
+    pub output_start_date: NaiveDate,
+    pub output_end_date: NaiveDate,
+}
+
+#[derive(Debug, Serialize)]
+pub struct OutputSeries {
+    pub symbol: String,
+    pub indices: Vec<usize>,
+    pub values: BTreeMap<String, Vec<Option<f64>>>,
+}
+
+pub fn evaluate(request: Request) -> Result<Vec<OutputSeries>, String> {
+    let row_count: usize = request.series.iter().map(|series| series.frame.timestamps.len()).sum();
+    if request.specs.is_empty() || request.specs.len() > 64 || row_count > 60_000
+        || row_count.saturating_mul(request.specs.len()) > 1_000_000
+        || request.output_start_date > request.output_end_date {
+        return Err("stock_pool_indicator_request_budget_or_range_invalid".into());
+    }
+    for spec in request.specs.values() {
+        if !matches!(spec.indicator.as_str(), "ma" | "ema" | "kdj") || !(2..=10_000).contains(&spec.window)
+            || !matches!(spec.field.as_str(), "close" | "volume" | "high" | "low")
+            || (spec.indicator == "kdj" && !matches!(spec.output.as_deref(), Some("k" | "d" | "j"))) {
+            return Err("stock_pool_indicator_spec_invalid".into());
+        }
+    }
+    let mut seen = BTreeSet::new();
+    let mut result = Vec::new();
+    for series in request.series {
+        let frame = series.frame;
+        frame.validate()?;
+        if frame.frequency != "1d" { return Err("stock_pool_indicators_require_daily_source".into()); }
+        if series.admitted_missing_dates.iter().any(|day| !frame.timestamps.iter().any(|stamp| stamp.date_naive() == *day)) {
+            return Err("admitted_missing_date_is_outside_the_input_frame".into());
+        }
+        if !seen.insert(frame.symbol.clone()) { return Err("stock_pool_indicator_duplicate_symbol".into()); }
+        let indices = frame.timestamps.iter().enumerate().filter(|(_, stamp)| {
+            let day = stamp.date_naive(); request.output_start_date <= day && day <= request.output_end_date
+        }).map(|(index, _)| index).collect::<Vec<_>>();
+        let mut values = BTreeMap::new();
+        for (key, spec) in &request.specs {
+            let fields: Vec<&str> = if spec.indicator == "kdj" { vec!["high", "low", "close"] } else { vec![&spec.field] };
+            for field in &fields {
+                let raw = frame.fields.get(*field).ok_or_else(|| format!("indicator_field_missing:{field}"))?;
+                if raw.len() != frame.timestamps.len() { return Err("indicator_field_length_mismatch".into()); }
+            }
+            for index in 0..frame.timestamps.len() {
+                let valid = fields.iter().all(|field| frame.fields[*field][index].is_some_and(f64::is_finite));
+                if valid {
+                    if fields.iter().any(|field| frame.fields[*field][index].is_some_and(|value| if *field == "volume" { value < 0.0 } else { value <= 0.0 })) {
+                        return Err(format!("indicator_input_value_invalid:{}:{}", frame.symbol, frame.timestamps[index]));
+                    }
+                    if spec.indicator == "kdj" {
+                        let (hi, lo, close) = (frame.fields["high"][index].unwrap(), frame.fields["low"][index].unwrap(), frame.fields["close"][index].unwrap());
+                        if hi < lo || close < lo || close > hi { return Err(format!("indicator_ohlc_invalid:{}:{}", frame.symbol, frame.timestamps[index])); }
+                    }
+                }
+                else if !series.admitted_missing_dates.contains(&frame.timestamps[index].date_naive()) {
+                    return Err(format!("unclassified_indicator_input_gap:{}:{}", frame.symbol, frame.timestamps[index]));
+                }
+            }
+            let native_values = {
+                // The native KDJ has its own initialisation and lookback. Do
+                // not recreate it as STOCH or an independently seeded loop.
+                // Preserve admitted NULL rows too: the shared kernel defines
+                // gap/warmup semantics; compressing the calendar changes them.
+                let expression: Expr = serde_json::from_value(if spec.indicator == "kdj" {
+                    json!({"kind":"indicator","name":"KDJ","inputs":[],
+                        "parameters":{"optInFastK_Period":spec.window,"optInSlowK_Period":3,
+                            "optInSlowK_MAType":13,"optInSlowD_Period":3,"optInSlowD_MAType":13},
+                        "output":match spec.output.as_deref() { Some("k") => 0, Some("d") => 1, _ => 2 }})
+                } else {
+                    json!({"kind":"indicator","name":if spec.indicator == "ma" {"SMA"} else {"EMA"},
+                        "inputs":[{"kind":"field","name":spec.field}],"parameters":{"optInTimePeriod":spec.window}})
+                }).map_err(|error| error.to_string())?;
+                factor_events::evaluate(&expression, &frame)?.values
+            };
+            values.insert(key.clone(), indices.iter().map(|index| native_values[*index]).collect());
+        }
+        result.push(OutputSeries { symbol: frame.symbol, indices, values });
+    }
+    Ok(result)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    fn request() -> Request {
+        serde_json::from_value(json!({"specs":{"ma":{"indicator":"ma","field":"close","window":3},"ema":{"indicator":"ema","field":"close","window":3},"j":{"indicator":"kdj","field":"close","window":3,"output":"j"}},
+            "series":[{"frame":{"symbol":"000001.SZ","frequency":"1d","decision_at":"2026-09-10T17:00:00+08:00",
+                "timestamps":["2026-09-07T15:00:00+08:00","2026-09-08T15:00:00+08:00","2026-09-09T15:00:00+08:00","2026-09-10T15:00:00+08:00"],
+                "available_at":["2026-09-07T16:00:00+08:00","2026-09-08T16:00:00+08:00","2026-09-09T16:00:00+08:00","2026-09-10T16:00:00+08:00"],
+                "fields":{"close":[1.,2.,3.,4.],"high":[2.,3.,4.,5.],"low":[0.5,1.,2.,3.]}}}],
+            "output_start_date":"2026-09-09","output_end_date":"2026-09-10"})).unwrap()
+    }
+    #[test]
+    fn uses_shared_ma_ema_and_preserves_recursive_prefix_before_output_window() {
+        let rows = evaluate(request()).unwrap();
+        assert_eq!(rows[0].indices,vec![2,3]);
+        assert_eq!(rows[0].values["ma"],vec![Some(2.),Some(3.)]);
+        assert_eq!(rows[0].values["ema"],vec![Some(2.),Some(3.)]);
+        assert_eq!(rows[0].values["j"], vec![None, None]); // KDJ has a longer native lookback.
+        let mut later = request(); later.output_start_date = NaiveDate::from_ymd_opt(2026,9,10).unwrap();
+        assert_eq!(evaluate(later).unwrap()[0].values["ema"],vec![rows[0].values["ema"][1]]);
+    }
+    #[test]
+    fn kdj_uses_the_same_frozen_native_kernel_as_event_conditions() {
+        let mut data = request();
+        let frame = &mut data.series[0].frame;
+        for i in 4..16 {
+            let day = NaiveDate::from_ymd_opt(2026,9,7).unwrap() + chrono::Duration::days(i);
+            frame.timestamps.push(chrono::DateTime::parse_from_rfc3339(&format!("{day}T15:00:00+08:00")).unwrap());
+            frame.available_at.push(chrono::DateTime::parse_from_rfc3339(&format!("{day}T16:00:00+08:00")).unwrap());
+            frame.fields.get_mut("close").unwrap().push(Some(i as f64 + 1.));
+            frame.fields.get_mut("high").unwrap().push(Some(i as f64 + 2.));
+            frame.fields.get_mut("low").unwrap().push(Some(i as f64));
+        }
+        frame.decision_at = chrono::DateTime::parse_from_rfc3339("2026-09-23T17:00:00+08:00").unwrap();
+        data.output_start_date=NaiveDate::from_ymd_opt(2026,9,7).unwrap();
+        data.output_end_date=NaiveDate::from_ymd_opt(2026,9,22).unwrap();
+        let native:Expr=serde_json::from_value(json!({"kind":"indicator","name":"KDJ","inputs":[],"parameters":{"optInFastK_Period":3},"output":2})).unwrap();
+        let expected=factor_events::evaluate(&native,frame).unwrap().values;
+        assert!(expected.iter().any(Option::is_some));
+        assert_eq!(evaluate(data).unwrap()[0].values["j"],expected);
+    }
+    #[test]
+    fn missing_inputs_require_source_admission_and_future_inputs_fail() {
+        let mut data = request(); data.series[0].frame.fields.get_mut("close").unwrap()[1] = None;
+        assert!(evaluate(data).unwrap_err().contains("unclassified_indicator_input_gap"));
+        let mut data = request(); data.series[0].frame.available_at[3] = chrono::DateTime::parse_from_rfc3339("2026-09-11T16:00:00+08:00").unwrap();
+        assert!(evaluate(data).is_err());
+        let mut data=request();data.series[0].frame.fields.get_mut("close").unwrap()[1]=None;
+        data.series[0].admitted_missing_dates.insert(NaiveDate::from_ymd_opt(2026,9,8).unwrap());
+        let native:Expr=serde_json::from_value(json!({"kind":"indicator","name":"EMA","inputs":[{"kind":"field","name":"close"}],"parameters":{"optInTimePeriod":3}})).unwrap();
+        let expected=factor_events::evaluate(&native,&data.series[0].frame).unwrap().values;
+        assert_eq!(expected[2..], [None,None]);
+        assert_eq!(evaluate(data).unwrap()[0].values["ema"],expected[2..]);
+    }
+}

crates/fidc-core/src/stock_pool_market_cap.rs

@@ -0,0 +1,108 @@
+//! Configurable index-to-market-cap band. Values are CNY, not implicit yi.
+use chrono::NaiveDate;
+use serde::{Deserialize, Serialize};
+use sha2::{Digest, Sha256};
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct IndexMarketCapPolicy {
+    pub schema_version: u32,
+    pub index_code: String,
+    pub field: String,
+    pub value_unit: String,
+    pub index_low: f64,
+    pub index_high: f64,
+    pub lower_at_low: f64,
+    pub lower_at_high: f64,
+    pub upper_at_low: f64,
+    pub upper_at_high: f64,
+}
+
+impl IndexMarketCapPolicy {
+    pub fn validate(&self) -> Result<(), String> {
+        if self.schema_version != 1 || self.value_unit != "CNY"
+            || !matches!(self.field.as_str(), "market_cap" | "float_market_cap")
+        { return Err("index_market_cap_contract_invalid".into()); }
+        let index = self.index_code.split_once('.').is_some_and(|(code, exchange)| {
+            (6..=12).contains(&code.len())
+                && code.bytes().all(|byte| byte.is_ascii_uppercase() || byte.is_ascii_digit())
+                && matches!(exchange, "SH" | "SZ" | "CSI" | "CNI")
+        });
+        if !index { return Err("index_market_cap_index_invalid".into()); }
+        if [self.index_low,self.index_high,self.lower_at_low,self.lower_at_high,self.upper_at_low,self.upper_at_high]
+            .iter().any(|value| !value.is_finite() || *value <= 0.)
+            || self.index_low >= self.index_high || self.lower_at_low > self.upper_at_low
+            || self.lower_at_high > self.upper_at_high
+        { return Err("index_market_cap_bounds_invalid".into()); }
+        Ok(())
+    }
+    pub fn band(&self, close: f64) -> Result<(f64, f64), String> {
+        self.validate()?;
+        if !close.is_finite() || close <= 0. { return Err("index_market_cap_close_invalid".into()); }
+        let t = (close.clamp(self.index_low,self.index_high) - self.index_low) / (self.index_high-self.index_low);
+        Ok((self.lower_at_low + t*(self.lower_at_high-self.lower_at_low),
+            self.upper_at_low + t*(self.upper_at_high-self.upper_at_low)))
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct IndexMarketCapRow { pub date: NaiveDate, pub close: f64 }
+
+#[derive(Debug, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct Request {
+    pub policy: IndexMarketCapPolicy,
+    pub official_dates: Vec<NaiveDate>,
+    pub index_code: String,
+    pub closes: Vec<IndexMarketCapRow>,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize)]
+pub struct Band { pub date: NaiveDate, pub index_close: f64, pub lower: f64, pub upper: f64 }
+
+pub fn implementation_sha256() -> String { format!("{:x}", Sha256::digest(include_bytes!("stock_pool_market_cap.rs"))) }
+
+pub fn evaluate(input: &Request) -> Result<Vec<Band>, String> {
+    input.policy.validate()?;
+    if input.index_code != input.policy.index_code || input.official_dates.is_empty()
+        || input.official_dates.len() > 4000 || input.official_dates.len() != input.closes.len()
+        || input.official_dates.windows(2).any(|pair| pair[0]>=pair[1])
+        || input.closes.iter().zip(&input.official_dates).any(|(row, day)| row.date != *day)
+    { return Err("index_market_cap_calendar_or_identity_mismatch".into()); }
+    input.closes.iter().map(|row| {
+        let (lower,upper)=input.policy.band(row.close)?;
+        Ok(Band{date:row.date,index_close:row.close,lower,upper})
+    }).collect()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    fn policy()->IndexMarketCapPolicy {
+        serde_json::from_value(serde_json::json!({"schema_version":1,"index_code":"000300.SH","field":"market_cap","value_unit":"CNY",
+            "index_low":4000,"index_high":6000,"lower_at_low":2000000000_f64,"lower_at_high":3000000000_f64,
+            "upper_at_low":5000000000_f64,"upper_at_high":8000000000_f64})).unwrap()
+    }
+    #[test]
+    fn interpolates_declared_endpoints_and_clamps_without_business_defaults(){
+        assert_eq!(policy().band(3000.).unwrap(),(2e9,5e9));
+        assert_eq!(policy().band(5000.).unwrap(),(2.5e9,6.5e9));
+        assert_eq!(policy().band(7000.).unwrap(),(3e9,8e9));
+        let mut decreasing=policy();decreasing.lower_at_low=3e9;decreasing.lower_at_high=2e9;
+        assert_eq!(decreasing.band(5000.).unwrap(),(2.5e9,6.5e9));
+        assert!(policy().band(f64::NAN).is_err());
+        let mut invalid=policy();invalid.value_unit="亿元".into();assert!(invalid.validate().is_err());
+        invalid=policy();invalid.index_high=4000.;assert!(invalid.validate().is_err());
+        invalid=policy();invalid.lower_at_low=9e9;assert!(invalid.validate().is_err());
+    }
+    #[test]
+    fn missing_duplicate_or_mismatched_index_inputs_do_not_shrink_the_calendar(){
+        let day=NaiveDate::from_ymd_opt(2026,9,11).unwrap();
+        let mut input=Request{policy:policy(),official_dates:vec![day],index_code:"000300.SH".into(),closes:vec![IndexMarketCapRow{date:day,close:5000.}]};
+        assert_eq!(evaluate(&input).unwrap()[0].lower,2.5e9);
+        input.official_dates.push(day);assert!(evaluate(&input).is_err());input.official_dates.pop();
+        input.index_code="932000.CSI".into();assert!(evaluate(&input).is_err());
+        input.index_code="000300.SH".into();input.closes.clear();assert!(evaluate(&input).is_err());
+    }
+}

crates/fidc-core/src/stock_pool_quote_facts.rs

@@ -0,0 +1,148 @@
+//! Condition facts are distinct from the quote's per-observation fill capacity.
+//! Only a complete, declared raw-minute prefix can prove a session total.
+use std::collections::BTreeMap;
+use chrono::{NaiveDate, NaiveDateTime, NaiveTime, Timelike};
+use rust_decimal::Decimal;
+use crate::data::IntradayExecutionQuote;
+use crate::stock_pool_execution::{parse_stock_pool_condition, StockPoolExecutionRule};
+
+pub fn requires_session_totals(rule: &StockPoolExecutionRule) -> bool {
+    [rule.buy_condition.as_str(), if rule.sell_trigger_mode == "condition" { rule.sell_condition.as_str() } else { "" }].into_iter().any(|condition| {
+        parse_stock_pool_condition(condition).is_some_and(|(_, field, _, _)| matches!(field.as_str(), "volume" | "amount"))
+    })
+}
+
+/// The cash-equity minute feed includes the opening observation and a separate
+/// post-close segment. Trading eligibility remains owned by the dated rules.
+fn next_minute(time: NaiveTime) -> Option<NaiveTime> {
+    let minute = time.hour() * 60 + time.minute();
+    let next = match minute {
+        570..=689 | 781..=899 | 906..=929 => minute + 1,
+        690 => 781,
+        900 => 906,
+        _ => return None,
+    };
+    NaiveTime::from_hms_opt(next / 60, next % 60, 0)
+}
+
+#[derive(Debug, Default)]
+pub(crate) struct SessionTotalsCache {
+    pub date: Option<NaiveDate>,
+    pub symbols: BTreeMap<String, MinutePrefix>,
+}
+
+#[derive(Debug)]
+pub(crate) struct MinutePrefix {
+    values: BTreeMap<NaiveTime, (Decimal, Decimal)>,
+    failure: String,
+}
+
+impl MinutePrefix {
+    pub fn build(date: NaiveDate, symbol: &str, quotes: &[IntradayExecutionQuote]) -> Self {
+        let mut values = BTreeMap::new();
+        let mut expected = NaiveTime::from_hms_opt(9, 30, 0).unwrap();
+        let mut volume = 0_u64;
+        let mut amount = Decimal::ZERO;
+        let mut failure = format!("stock_pool_session_prefix_missing:{symbol}:{date}:{expected}");
+        for quote in quotes {
+            let time = quote.timestamp.time();
+            if quote.date != date || quote.timestamp.date() != date || quote.symbol != symbol {
+                failure = format!("stock_pool_session_prefix_identity_invalid:{symbol}:{date}");
+                break;
+            }
+            if time != expected {
+                failure = format!("stock_pool_session_prefix_missing:{symbol}:{date}:expected={expected}:observed={time}");
+                break;
+            }
+            if quote.observation_kind != crate::data::QuoteObservationKind::MinuteBar {
+                failure = format!("stock_pool_session_prefix_basis_unverified:{symbol}:{date}:{time}");
+                break;
+            }
+            let Some(next_volume) = volume.checked_add(quote.volume_delta) else {
+                failure = format!("stock_pool_session_volume_overflow:{symbol}:{date}:{time}");
+                break;
+            };
+            let delta = if quote.amount_delta.is_finite() && quote.amount_delta >= 0.0 {
+                quote.amount_delta.to_string().parse::<Decimal>().ok()
+            } else { None };
+            let Some(next_amount) = delta.and_then(|delta| amount.checked_add(delta)) else {
+                failure = format!("stock_pool_session_amount_invalid:{symbol}:{date}:{time}");
+                break;
+            };
+            volume = next_volume;
+            amount = next_amount;
+            values.insert(time, (Decimal::from(volume), amount));
+            let Some(next) = next_minute(time) else { break };
+            expected = next;
+            failure = format!("stock_pool_session_prefix_missing:{symbol}:{date}:{expected}");
+        }
+        Self { values, failure }
+    }
+
+    pub fn at(&self, at: NaiveDateTime) -> Result<(Decimal, Decimal), String> {
+        let time = at.time().with_second(0).unwrap().with_nanosecond(0).unwrap();
+        self.values.get(&time).copied().ok_or_else(|| self.failure.clone())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    fn quote(hour: u32, minute: u32, volume: u64, amount: f64) -> IntradayExecutionQuote {
+        let date = NaiveDate::from_ymd_opt(2026, 9, 11).unwrap();
+        IntradayExecutionQuote { observation_kind: crate::data::QuoteObservationKind::MinuteBar, date, symbol: "000001.SZ".into(), timestamp: date.and_hms_opt(hour, minute, 0).unwrap(),
+            last_price: 10., bid1: 0., ask1: 0., bid1_volume: 0, ask1_volume: 0,
+            volume_delta: volume, amount_delta: amount, trading_phase: Some("minute_execution_prices:raw-minute".into()) }
+    }
+    #[test]
+    fn totals_use_only_the_complete_observed_prefix_and_keep_decimal_amounts() {
+        let mut rows = vec![quote(9,30,100,10.01), quote(9,31,0,0.), quote(9,32,200,20.02)];
+        let prefix = MinutePrefix::build(rows[0].date, "000001.SZ", &rows);
+        assert_eq!(prefix.at(rows[1].timestamp).unwrap(), (100.into(), Decimal::new(1001,2)));
+        assert_eq!(prefix.at(rows[2].timestamp).unwrap(), (300.into(), Decimal::new(3003,2)));
+        rows[2].volume_delta = 999999;
+        rows[2].amount_delta = f64::NAN;
+        let changed = MinutePrefix::build(rows[0].date, "000001.SZ", &rows);
+        assert_eq!(changed.at(rows[1].timestamp).unwrap(), prefix.at(rows[1].timestamp).unwrap());
+        assert!(changed.at(rows[2].timestamp).unwrap_err().contains("amount_invalid"));
+    }
+    #[test]
+    fn sparse_unverified_and_overflowing_quotes_cannot_be_called_session_totals() {
+        let first = quote(9,30,100,1000.);
+        for rows in [vec![quote(9,31,100,1000.)], vec![first.clone(), quote(9,32,100,1000.)]] {
+            let prefix = MinutePrefix::build(first.date, "000001.SZ", &rows);
+            assert!(prefix.at(rows.last().unwrap().timestamp).unwrap_err().contains("prefix_missing"));
+        }
+        let mut unknown = first.clone(); unknown.observation_kind = Default::default();
+        assert!(MinutePrefix::build(first.date, "000001.SZ", &[unknown]).at(first.timestamp).unwrap_err().contains("basis_unverified"));
+        let rows = [quote(9,30,u64::MAX,0.), quote(9,31,1,0.)];
+        assert!(MinutePrefix::build(first.date, "000001.SZ", &rows).at(rows[1].timestamp).unwrap_err().contains("volume_overflow"));
+    }
+    #[test]
+    fn lunch_and_post_close_gaps_follow_the_minute_feed_segments() {
+        let mut rows = Vec::new(); let mut time = NaiveTime::from_hms_opt(9,30,0).unwrap();
+        loop {
+            rows.push(quote(time.hour(), time.minute(), 1, 0.01));
+            let Some(next) = next_minute(time) else { break }; time=next;
+        }
+        let prefix=MinutePrefix::build(rows[0].date,"000001.SZ",&rows);
+        assert_eq!(prefix.at(rows.last().unwrap().timestamp).unwrap(), (Decimal::from(rows.len()), Decimal::new(rows.len() as i64,2)));
+        assert!(!rows.iter().any(|row| row.timestamp.time().hour()==12));
+        assert!(!rows.iter().any(|row| row.timestamp.time()==NaiveTime::from_hms_opt(13,0,0).unwrap()));
+        assert!(!rows.iter().any(|row| row.timestamp.time().hour()==15 && (1..6).contains(&row.timestamp.time().minute())));
+    }
+
+    #[test]
+    #[ignore = "requires FIDC_SESSION_PREFIX_SOURCE_JSON from the frozen Source minute response"]
+    fn real_source_session_prefix_matches_observed_checkpoints() {
+        let path=std::env::var("FIDC_SESSION_PREFIX_SOURCE_JSON").expect("explicit Source evidence path");
+        let rows:Vec<IntradayExecutionQuote>=serde_json::from_slice(&std::fs::read(path).unwrap()).unwrap();
+        let date=NaiveDate::from_ymd_opt(2026,9,8).unwrap();
+        assert_eq!(rows.len(),242);
+        let prefix=MinutePrefix::build(date,"000063.SZ",&rows);
+        for (hour,minute,volume,amount) in [(9,30,512700,17103672),(9,31,2296631,76576756),(9,32,2983531,99471024),(11,30,27868847,928167630),(13,1,28495518,948994890),(15,0,45625008,1518115100)] {
+            assert_eq!(prefix.at(date.and_hms_opt(hour,minute,0).unwrap()).unwrap(),(Decimal::from(volume),Decimal::from(amount)));
+        }
+        assert!(prefix.at(date.and_hms_opt(15,30,0).unwrap()).unwrap_err().contains("prefix_missing"),"one final aggregate is not a verified intraday prefix");
+    }
+}

crates/fidc-core/src/stock_pool_state.rs

@@ -0,0 +1,345 @@
+//! Durable intent progress, deliberately separate from actual-fill holding
+//! protection. A published target starts no holding/protection timer.
+use std::collections::{BTreeMap, BTreeSet};
+
+use chrono::NaiveDate;
+use rust_decimal::Decimal;
+use serde::{Deserialize, Serialize};
+
+use crate::stock_pool_execution::{
+    Position, StockPoolMemberSpec, StockPoolPlan, normalize_stock_symbol,
+};
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct StockPoolEntryProgress {
+    pub pending: bool,
+    pub observed_holding: bool,
+    pub first_decision_date: NaiveDate,
+    pub latest_generation: String,
+    pub latest_target_value: Decimal,
+    /// Fully funded entry goal, fixed at the last plan. Reconcile against
+    /// actual holdings before repricing, never against today's market value.
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub completion_quantity: Option<Decimal>,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct StockPoolPositionActionBasis {
+    pub generation: String,
+    pub first_execution_date: NaiveDate,
+    pub quantity: Decimal,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct StockPoolExecutionState {
+    pub schema_version: u32,
+    pub last_execution_date: Option<NaiveDate>,
+    pub entries: BTreeMap<String, StockPoolEntryProgress>,
+    #[serde(default)]
+    pub last_target_weights: BTreeMap<String, i32>,
+    /// First signal excluding an actually held member; not an acquisition date.
+    pub removed_since: BTreeMap<String, NaiveDate>,
+    /// Signal progress, not a fill or holding-period fact. Kept across retries
+    /// and later execution sessions until a new generation supersedes it.
+    #[serde(default, skip_serializing_if = "BTreeMap::is_empty")]
+    pub position_action_bases: BTreeMap<String, StockPoolPositionActionBasis>,
+}
+
+pub struct StockPoolGoalObservation<'a> {
+    pub symbol: &'a str,
+    pub target_weight_bps: i32,
+    pub target_value: Decimal,
+    pub current_quantity: Decimal,
+    pub target_quantity: Decimal,
+    pub status: &'a str,
+}
+
+impl Default for StockPoolExecutionState {
+    fn default() -> Self {
+        Self {
+            schema_version: 1,
+            last_execution_date: None,
+            entries: BTreeMap::new(),
+            last_target_weights: BTreeMap::new(),
+            removed_since: BTreeMap::new(),
+            position_action_bases: BTreeMap::new(),
+        }
+    }
+}
+
+impl StockPoolExecutionState {
+    pub fn validate(&self) -> Result<(), String> {
+        if self.schema_version != 1
+            || self.entries.len() > 10000
+            || self.removed_since.len() > 10000
+            || self.position_action_bases.len() > 10000
+        {
+            return Err("stock_pool_execution_state_invalid_schema_or_size".into());
+        }
+        for symbol in self
+            .entries
+            .keys()
+            .chain(self.removed_since.keys())
+            .chain(self.last_target_weights.keys())
+            .chain(self.position_action_bases.keys())
+        {
+            if normalize_stock_symbol(symbol).as_ref() != Some(symbol) {
+                return Err("stock_pool_execution_state_invalid_symbol".into());
+            }
+        }
+        if self.last_target_weights.len() > 10000
+            || self
+                .last_target_weights
+                .values()
+                .any(|value| !(0..=10000).contains(value))
+        {
+            return Err("stock_pool_execution_state_invalid_weights".into());
+        }
+        if self.entries.values().any(|entry| {
+            entry.latest_target_value < Decimal::ZERO
+                || entry.completion_quantity.is_some_and(|quantity| quantity <= Decimal::ZERO)
+                || entry.latest_generation.is_empty()
+                || self
+                    .last_execution_date
+                    .is_none_or(|last| entry.first_decision_date > last)
+        }) || self
+            .removed_since
+            .values()
+            .any(|day| self.last_execution_date.is_none_or(|last| *day > last))
+        {
+            return Err("stock_pool_execution_state_invalid_goal_or_clock".into());
+        }
+        if self.position_action_bases.values().any(|basis| {
+            basis.generation.trim().is_empty() || basis.quantity <= Decimal::ZERO
+                || self.last_execution_date.is_none_or(|date| basis.first_execution_date > date)
+        }) {
+            return Err("stock_pool_execution_state_invalid_action_basis".into());
+        }
+        Ok(())
+    }
+
+    pub fn observe(
+        &self,
+        decision_date: NaiveDate,
+        execution_date: NaiveDate,
+        official_dates: &[NaiveDate],
+        members: &[StockPoolMemberSpec],
+        positions: &[Position],
+    ) -> Result<Self, String> {
+        self.validate()?;
+        if decision_date > execution_date
+            || !official_dates.contains(&execution_date)
+            || !official_dates.contains(&decision_date)
+            || official_dates.windows(2).any(|pair| pair[0] >= pair[1])
+            || self
+                .last_execution_date
+                .is_some_and(|last| last > execution_date)
+        {
+            return Err("stock_pool_execution_state_requires_monotone_official_clock".into());
+        }
+        let mut next = self.clone();
+        next.last_execution_date = Some(execution_date);
+        let members = members
+            .iter()
+            .map(|member| member.symbol.clone())
+            .collect::<BTreeSet<_>>();
+        let held = positions
+            .iter()
+            .filter(|position| position.quantity > Decimal::ZERO)
+            .map(|position| position.symbol.clone())
+            .collect::<BTreeSet<_>>();
+        next.entries.retain(|symbol, entry| {
+            // Confirmed flat starts a new cycle. A still-unfilled fresh target
+            // may remain pending while the latest pool still requests it.
+            !(entry.observed_holding && !held.contains(symbol))
+                && (members.contains(symbol) || held.contains(symbol))
+        });
+        next.last_target_weights
+            .retain(|symbol, _| members.contains(symbol) || held.contains(symbol));
+        for (symbol, entry) in &mut next.entries {
+            entry.observed_holding |= held.contains(symbol);
+            if entry.pending
+                && entry.completion_quantity.is_some_and(|goal| {
+                    positions.iter().any(|position| {
+                        &position.symbol == symbol && position.quantity >= goal
+                    })
+                })
+            {
+                entry.pending = false;
+            }
+        }
+        next.removed_since
+            .retain(|symbol, _| held.contains(symbol) && !members.contains(symbol));
+        for symbol in held.difference(&members) {
+            next.removed_since
+                .entry(symbol.clone())
+                .or_insert(decision_date);
+        }
+        next.validate()?;
+        Ok(next)
+    }
+
+    pub fn pending_symbols(&self) -> BTreeSet<String> {
+        self.entries
+            .iter()
+            .filter(|(_, entry)| entry.pending)
+            .map(|(symbol, _)| symbol.clone())
+            .collect()
+    }
+
+    pub fn next_day_exit_symbols(&self, execution_date: NaiveDate) -> BTreeSet<String> {
+        self.removed_since
+            .iter()
+            .filter(|(_, removed)| **removed < execution_date)
+            .map(|(symbol, _)| symbol.clone())
+            .collect()
+    }
+
+    pub fn record_plan(
+        &self,
+        decision_date: NaiveDate,
+        generation: &str,
+        plan: &StockPoolPlan,
+    ) -> Result<Self, String> {
+        self.record_targets(
+            decision_date,
+            generation,
+            plan.rows.iter().filter(|row| !plan.position_action_bases.contains_key(&row.symbol)).map(|row| StockPoolGoalObservation {
+                symbol: &row.symbol,
+                target_weight_bps: row.target_weight_bps,
+                target_value: row.target_value,
+                current_quantity: row.current_quantity,
+                target_quantity: row.target_quantity,
+                status: &row.status,
+            }),
+        )?.record_position_action_bases(generation, &plan.position_action_bases)
+    }
+
+    pub fn position_action_bases_for(&self, generation: &str) -> BTreeMap<String, Decimal> {
+        self.position_action_bases.iter()
+            .filter(|(_, basis)| basis.generation == generation)
+            .map(|(symbol, basis)| (symbol.clone(), basis.quantity))
+            .collect()
+    }
+
+    /// A verified split changes the share unit, not the intended reduction or
+    /// entry completion. Never infer a split from a changed holding quantity.
+    pub fn adjust_for_split(&self, symbol: &str, ratio: Decimal) -> Result<Self, String> {
+        self.validate()?;
+        if ratio <= Decimal::ZERO || normalize_stock_symbol(symbol).as_deref() != Some(symbol) {
+            return Err("stock_pool_execution_state_split_invalid".into());
+        }
+        let scale = |quantity: Decimal| quantity.checked_mul(ratio)
+            .map(|value| value.round_dp_with_strategy(0, rust_decimal::RoundingStrategy::MidpointAwayFromZero))
+            .ok_or_else(|| "stock_pool_execution_state_split_overflow".to_string());
+        let mut next = self.clone();
+        if let Some(entry) = next.entries.get_mut(symbol) {
+            if let Some(quantity) = entry.completion_quantity {
+                let quantity = scale(quantity)?;
+                entry.completion_quantity = (quantity > Decimal::ZERO).then_some(quantity);
+            }
+        }
+        if let Some(basis) = next.position_action_bases.get_mut(symbol) {
+            basis.quantity = scale(basis.quantity)?;
+            if basis.quantity == Decimal::ZERO { next.position_action_bases.remove(symbol); }
+        }
+        next.validate()?;
+        Ok(next)
+    }
+
+    pub fn record_position_action_bases(
+        &self,
+        generation: &str,
+        quantities: &BTreeMap<String, Decimal>,
+    ) -> Result<Self, String> {
+        self.validate()?;
+        if generation.trim().is_empty() {
+            return Err("stock_pool_execution_state_action_generation_missing".into());
+        }
+        let first_execution_date = self.last_execution_date
+            .ok_or("stock_pool_execution_state_action_clock_missing")?;
+        let mut next = self.clone();
+        next.position_action_bases.retain(|_, basis| basis.generation == generation);
+        for (symbol, quantity) in quantities {
+            if let Some(basis) = next.position_action_bases.get(symbol) {
+                if basis.quantity != *quantity {
+                    return Err(format!("stock_pool_execution_state_action_basis_changed:{symbol}"));
+                }
+            } else {
+                next.position_action_bases.insert(symbol.clone(), StockPoolPositionActionBasis {
+                    generation: generation.into(), first_execution_date, quantity: *quantity,
+                });
+            }
+        }
+        next.validate()?;
+        Ok(next)
+    }
+
+    pub fn record_targets<'a>(
+        &self,
+        decision_date: NaiveDate,
+        generation: &str,
+        rows: impl IntoIterator<Item = StockPoolGoalObservation<'a>>,
+    ) -> Result<Self, String> {
+        self.validate()?;
+        if generation.is_empty()
+            || self
+                .last_execution_date
+                .is_none_or(|date| decision_date > date)
+        {
+            return Err("stock_pool_execution_state_plan_clock_invalid".into());
+        }
+        let mut next = self.clone();
+        for row in rows {
+            if row.status == "AUTOMATIC_TRADE_PROTECTED" {
+                continue;
+            }
+            if row.target_weight_bps > 0 {
+                next.last_target_weights
+                    .insert(row.symbol.into(), row.target_weight_bps);
+            }
+            let eligible = row.target_weight_bps > 0 && row.target_value > Decimal::ZERO;
+            let completion_quantity = (row.status == "READY"
+                && row.target_quantity > row.current_quantity)
+                .then_some(row.target_quantity);
+            let satisfied = matches!(
+                row.status,
+                "ALREADY_SATISFIED"
+                    | "ENTRY_TARGET_ALREADY_SATISFIED"
+                    | "BELOW_MINIMUM_TRADE_UNIT_ALREADY_SATISFIED"
+            );
+            if row.current_quantity == Decimal::ZERO && eligible && satisfied {
+                next.entries.remove(row.symbol);
+                continue;
+            }
+            if let Some(entry) = next.entries.get_mut(row.symbol) {
+                entry.latest_generation = generation.into();
+                entry.latest_target_value = row.target_value;
+                if entry.pending && completion_quantity.is_some() {
+                    entry.completion_quantity = completion_quantity;
+                }
+                entry.observed_holding |= row.current_quantity > Decimal::ZERO;
+                if entry.pending && eligible && satisfied {
+                    entry.pending = false;
+                }
+            } else if eligible && row.current_quantity == Decimal::ZERO && !satisfied {
+                next.entries.insert(
+                    row.symbol.into(),
+                    StockPoolEntryProgress {
+                        pending: true,
+                        observed_holding: false,
+                        first_decision_date: decision_date,
+                        latest_generation: generation.into(),
+                        latest_target_value: row.target_value,
+                        completion_quantity,
+                    },
+                );
+            }
+        }
+        next.validate()?;
+        Ok(next)
+    }
+}

crates/fidc-core/src/strategy.rs

@@ -20,6 +20,18 @@ use crate::universe::{DynamicMarketCapBandSelector, SelectionContext, UniverseSe
 
 pub trait Strategy {
     fn name(&self) -> &str;
+    fn bind_runtime_position_configuration(
+        &mut self,
+        events: &[crate::position_exposure::PositionExposureEvent],
+        legacy: &BTreeMap<NaiveDate, i32>,
+    ) -> Result<(), BacktestError> {
+        if !events.is_empty() || !legacy.is_empty() {
+            return Err(BacktestError::Execution(
+                "strategy does not implement runtime position configuration".into(),
+            ));
+        }
+        Ok(())
+    }
     fn initial_subscriptions(&self) -> BTreeSet<String> {
         BTreeSet::new()
     }
@@ -40,6 +52,12 @@ pub trait Strategy {
     ) -> Result<(), BacktestError> {
         Ok(())
     }
+    /// External, already executed manual activity. It is not a new strategy
+    /// order and must not be run through order generation or transaction costs.
+    fn on_observed_manual_execution(
+        &mut self,
+        _execution: &crate::manual_execution::ManualReplayApplication,
+    ) -> Result<(), BacktestError> { Ok(()) }
     fn schedule_rules(&self) -> Vec<ScheduleRule> {
         Vec::new()
     }
@@ -102,6 +120,7 @@ pub struct OpenOrderView {
     pub avg_price: f64,
     pub transaction_cost: f64,
     pub limit_price: f64,
+    pub reserved_cash: Option<f64>,
     pub reason: String,
 }
 
@@ -497,6 +516,7 @@ impl StrategyContext<'_> {
             .iter()
             .filter(|order| order.side == OrderSide::Buy)
             .map(|order| {
+                if let Some(reserved) = order.reserved_cash { return reserved; }
                 let price = if order.limit_price.is_finite() {
                     order.limit_price.max(0.0)
                 } else {
@@ -975,8 +995,9 @@ fn safe_ratio(numerator: f64, denominator: f64) -> f64 {
     }
 }
 
-#[derive(Debug, Clone, Default)]
+#[derive(Debug, Clone, Default, serde::Serialize)]
 pub struct StrategyDecision {
+    pub buy_denials: BTreeMap<String, String>,
     pub rebalance: bool,
     pub target_weights: BTreeMap<String, f64>,
     pub exit_symbols: BTreeSet<String>,
@@ -987,9 +1008,46 @@ pub struct StrategyDecision {
 }
 
 impl StrategyDecision {
+    pub(crate) fn is_portfolio_target_only(&self) -> bool {
+        (self.rebalance && self.order_intents.is_empty())
+            || (self.order_intents.len() == 1
+                && matches!(
+                    self.order_intents[0].unwrapped(),
+                    OrderIntent::StockPool { .. } | OrderIntent::TargetPortfolioSmart { .. }
+                ))
+    }
+
+    pub fn potential_buy_symbols(&self, open_orders: &[OpenOrderView]) -> BTreeSet<String> {
+        let mut symbols = BTreeSet::new();
+        if self.rebalance {
+            symbols.extend(self.target_weights.iter().filter(|(_, weight)| **weight > 0.0).map(|(symbol, _)| symbol.clone()));
+        }
+        for intent in &self.order_intents {
+            intent.collect_potential_buy_symbols(open_orders, &mut symbols);
+        }
+        symbols.retain(|symbol| !symbol.trim().is_empty());
+        symbols
+    }
+
     pub fn merge_from(&mut self, mut other: StrategyDecision) {
-        self.rebalance |= other.rebalance;
-        self.target_weights.append(&mut other.target_weights);
+        if self.is_portfolio_target_only() && other.is_portfolio_target_only() {
+            let mut previous = std::mem::replace(self, other);
+            previous
+                .diagnostics
+                .push("unsubmitted_portfolio_target_superseded".into());
+            self.notes.splice(0..0, previous.notes);
+            self.diagnostics.splice(0..0, previous.diagnostics);
+            return;
+        }
+        self.buy_denials.append(&mut other.buy_denials);
+        if other.rebalance {
+            // Rebalance targets are a complete portfolio, not an additive
+            // list. A newer unsent target replaces the earlier allocation.
+            self.rebalance = true;
+            self.target_weights = std::mem::take(&mut other.target_weights);
+        } else {
+            self.target_weights.append(&mut other.target_weights);
+        }
         self.exit_symbols.append(&mut other.exit_symbols);
         self.order_intents.append(&mut other.order_intents);
         self.notes.append(&mut other.notes);
@@ -998,7 +1056,8 @@ impl StrategyDecision {
     }
 
     pub fn is_empty(&self) -> bool {
-        !self.rebalance
+        self.buy_denials.is_empty()
+            && !self.rebalance
             && self.target_weights.is_empty()
             && self.exit_symbols.is_empty()
             && self.order_intents.is_empty()
@@ -1008,13 +1067,59 @@ impl StrategyDecision {
     }
 }
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[cfg(test)]
+mod decision_merge_tests {
+    use super::*;
+
+    #[test]
+    fn newer_complete_target_replaces_old_symbols_without_discarding_explicit_actions() {
+        let mut earlier = StrategyDecision {
+            rebalance: true,
+            target_weights: BTreeMap::from([("A".into(), 0.5), ("B".into(), 0.5)]),
+            exit_symbols: BTreeSet::from(["risk_exit".into()]),
+            order_intents: vec![OrderIntent::Shares {
+                symbol: "explicit".into(),
+                quantity: 100,
+                reason: "explicit action".into(),
+            }],
+            ..Default::default()
+        };
+        earlier.merge_from(StrategyDecision {
+            rebalance: true,
+            target_weights: BTreeMap::from([("C".into(), 1.)]),
+            ..Default::default()
+        });
+        assert_eq!(earlier.target_weights, BTreeMap::from([("C".into(), 1.)]));
+        assert!(earlier.rebalance);
+        assert!(earlier.exit_symbols.contains("risk_exit"));
+        assert_eq!(earlier.order_intents.len(), 1);
+    }
+
+    #[test]
+    fn explicit_empty_complete_target_replaces_old_allocation_but_empty_callback_does_not() {
+        let mut decision = StrategyDecision {
+            rebalance: true,
+            target_weights: BTreeMap::from([("A".into(), 1.)]),
+            ..Default::default()
+        };
+        decision.merge_from(StrategyDecision::default());
+        assert_eq!(decision.target_weights.len(), 1);
+        decision.merge_from(StrategyDecision {
+            rebalance: true,
+            ..Default::default()
+        });
+        assert!(decision.target_weights.is_empty());
+        assert!(decision.rebalance);
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, serde::Serialize)]
 pub enum AlgoOrderStyle {
     Vwap,
     Twap,
 }
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, serde::Serialize)]
 pub enum OrderTimeInForce {
     Day,
     Ioc,
@@ -1043,7 +1148,7 @@ impl OrderTimeInForce {
     }
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, serde::Serialize)]
 pub enum TargetPortfolioOrderPricing {
     LimitPrices(BTreeMap<String, f64>),
     AlgoOrder {
@@ -1053,8 +1158,11 @@ pub enum TargetPortfolioOrderPricing {
     },
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, serde::Serialize)]
 pub enum OrderIntent {
+    StockPool {
+        contract: Box<crate::stock_pool_execution::FrozenStockPoolIntent>,
+    },
     WithTimeInForce {
         intent: Box<OrderIntent>,
         time_in_force: OrderTimeInForce,
@@ -1214,6 +1322,43 @@ pub enum OrderIntent {
 }
 
 impl OrderIntent {
+    fn collect_potential_buy_symbols(&self, open_orders: &[OpenOrderView], symbols: &mut BTreeSet<String>) {
+        match self.unwrapped() {
+            Self::StockPool { contract } => { symbols.extend(contract.selection.requested_symbols.iter().cloned()); }
+            Self::Shares { symbol, quantity, .. } | Self::LimitShares { symbol, quantity, .. } if *quantity > 0 => { symbols.insert(symbol.clone()); }
+            Self::Lots { symbol, lots, .. } | Self::LimitLots { symbol, lots, .. } if *lots > 0 => { symbols.insert(symbol.clone()); }
+            Self::TargetShares { symbol, target_quantity, .. } | Self::LimitTargetShares { symbol, target_quantity, .. } if *target_quantity > 0 => { symbols.insert(symbol.clone()); }
+            Self::Value { symbol, value, .. } | Self::LimitValue { symbol, value, .. } | Self::AlgoValue { symbol, value, .. } if *value > 0.0 => { symbols.insert(symbol.clone()); }
+            Self::Percent { symbol, percent, .. } | Self::LimitPercent { symbol, percent, .. } | Self::AlgoPercent { symbol, percent, .. } if *percent > 0.0 => { symbols.insert(symbol.clone()); }
+            Self::TargetValue { symbol, target_value, .. } | Self::LimitTargetValue { symbol, target_value, .. } | Self::TimedTargetValue { symbol, target_value, .. } if *target_value > 0.0 => { symbols.insert(symbol.clone()); }
+            Self::TargetPercent { symbol, target_percent, .. } | Self::LimitTargetPercent { symbol, target_percent, .. } if *target_percent > 0.0 => { symbols.insert(symbol.clone()); }
+            Self::TargetPortfolioSmart { target_weights, .. } => {
+                symbols.extend(target_weights.iter().filter(|(_, weight)| **weight > 0.0).map(|(symbol, _)| symbol.clone()));
+            }
+            Self::ModifyOrder { order_id, new_total_quantity, new_limit_price, .. } => {
+                if let Some(order) = open_orders.iter().find(|order| order.order_id == *order_id)
+                    && order.side == OrderSide::Buy
+                    && (new_total_quantity.is_some_and(|value| value > order.requested_quantity)
+                        || new_limit_price.is_some_and(|value| value > order.limit_price))
+                {
+                    symbols.insert(order.symbol.clone());
+                }
+            }
+            Self::Shares { .. } | Self::LimitShares { .. }
+            | Self::Lots { .. } | Self::LimitLots { .. }
+            | Self::TargetShares { .. } | Self::LimitTargetShares { .. }
+            | Self::Value { .. } | Self::LimitValue { .. } | Self::AlgoValue { .. }
+            | Self::Percent { .. } | Self::LimitPercent { .. } | Self::AlgoPercent { .. }
+            | Self::TargetValue { .. } | Self::LimitTargetValue { .. } | Self::TimedTargetValue { .. }
+            | Self::TargetPercent { .. } | Self::LimitTargetPercent { .. }
+            | Self::CancelOrder { .. } | Self::CancelSymbol { .. } | Self::CancelAll { .. }
+            | Self::UpdateUniverse { .. } | Self::Subscribe { .. } | Self::Unsubscribe { .. }
+            | Self::DepositWithdraw { .. } | Self::FinanceRepay { .. } | Self::SetManagementFeeRate { .. }
+            | Self::Futures { .. } => {}
+            Self::WithTimeInForce { .. } => unreachable!("intent is unwrapped"),
+        }
+    }
+
     pub fn with_time_in_force(self, time_in_force: OrderTimeInForce) -> Self {
         match self {
             Self::WithTimeInForce { intent, .. } => Self::WithTimeInForce {
@@ -1260,6 +1405,7 @@ impl OrderIntent {
 
     pub fn supports_time_in_force(&self, time_in_force: OrderTimeInForce) -> bool {
         let intent = self.unwrapped();
+        if matches!(intent, Self::StockPool { .. }) { return time_in_force == OrderTimeInForce::Day; }
         if matches!(
             intent,
             Self::CancelOrder { .. }
@@ -1569,6 +1715,7 @@ impl Strategy for CnSmallCapRotationStrategy {
         if self.config.in_skip_window(ctx.decision_date) {
             self.last_gross_exposure = Some(0.0);
             return Ok(StrategyDecision {
+                buy_denials: Default::default(),
                 rebalance: true,
                 target_weights: BTreeMap::new(),
                 exit_symbols: ctx.portfolio.positions().keys().cloned().collect(),
@@ -1590,6 +1737,7 @@ impl Strategy for CnSmallCapRotationStrategy {
                     if message.contains("signal series insufficient") =>
                 {
                     return Ok(StrategyDecision {
+                        buy_denials: Default::default(),
                         rebalance: false,
                         target_weights: BTreeMap::new(),
                         exit_symbols: BTreeSet::new(),
@@ -1765,6 +1913,7 @@ impl Strategy for CnSmallCapRotationStrategy {
         self.last_gross_exposure = Some(gross_exposure);
 
         Ok(StrategyDecision {
+            buy_denials: Default::default(),
             rebalance,
             target_weights,
             exit_symbols,
@@ -2773,6 +2922,7 @@ impl Strategy for OmniMicroCapStrategy {
         let lagged_execution = ctx.is_lagged_execution();
         if self.config.in_skip_window(signal_date) {
             return Ok(StrategyDecision {
+                buy_denials: Default::default(),
                 rebalance: false,
                 target_weights: BTreeMap::new(),
                 exit_symbols: ctx.portfolio.positions().keys().cloned().collect(),
@@ -2803,6 +2953,7 @@ impl Strategy for OmniMicroCapStrategy {
                     if message.contains("insufficient benchmark") =>
                 {
                     return Ok(StrategyDecision {
+                        buy_denials: Default::default(),
                         rebalance: false,
                         target_weights: BTreeMap::new(),
                         exit_symbols: BTreeSet::new(),
@@ -3013,6 +3164,7 @@ impl Strategy for OmniMicroCapStrategy {
         ];
 
         Ok(StrategyDecision {
+            buy_denials: Default::default(),
             rebalance: false,
             target_weights: BTreeMap::new(),
             exit_symbols,
@@ -3122,7 +3274,7 @@ mod tests {
             .enumerate()
             .map(|(index, date)| DailyMarketSnapshot {
                 date: *date,
-                symbol: symbol.to_string(),
+                symbol: symbol.into(),
                 timestamp: Some(format!("{date} 10:18:00")),
                 day_open: 10.0 + index as f64,
                 open: 10.0 + index as f64,
@@ -3148,20 +3300,21 @@ mod tests {
             .iter()
             .map(|date| DailyFactorSnapshot {
                 date: *date,
-                symbol: symbol.to_string(),
+                symbol: symbol.into(),
                 market_cap_bn: 10.0,
                 free_float_cap_bn: 9.0,
                 pe_ttm: 12.0,
                 turnover_ratio: Some(1.0),
                 effective_turnover_ratio: Some(1.0),
-                extra_factors: BTreeMap::new(),
+                adjustment_factor_backward1: None,
+                extra_factors: Default::default(),
             })
             .collect::<Vec<_>>();
         let candidate_rows = dates
             .iter()
             .map(|date| CandidateEligibility {
                 date: *date,
-                symbol: symbol.to_string(),
+                symbol: symbol.into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,

crates/fidc-core/src/strategy_ai.rs

@@ -254,7 +254,7 @@ pub fn built_in_strategy_manual() -> StrategyAiManual {
             },
             ManualSection {
                 title: "corporate_actions.dividend_reinvestment".to_string(),
-                detail: "支持 corporate_actions.dividend_reinvestment(true)。开启后，现金分红到账会优先按 round lot 回补成同一只股票，零头保留为现金。".to_string(),
+                detail: "历史兼容的回测账务再投模型：corporate_actions.dividend_reinvestment(true) 在分红结算时按调整后的参考价分配整手股数，零头留现金，费用为0；来源标记为 dividend_reinvestment，不是交易所委托或真实自动买入。新策略不应手工处理公司行为。".to_string(),
             },
             ManualSection {
                 title: "execution.matching_type / execution.slippage".to_string(),
@@ -264,6 +264,10 @@ pub fn built_in_strategy_manual() -> StrategyAiManual {
                 title: "期货 runtime action 与提交校验".to_string(),
                 detail: "runtimeExpressions.trading.actions 支持 futures_order、futures_open、futures_close、futures_close_today、futures_close_yesterday；字段包括 symbol、direction=long|short、quantityExpr/amountExpr、可选 limitPriceExpr、transactionCostExpr、whenExpr 和 reason。期货-only 策略把请求初始资金分配给期货账户且股票账户为0；股票+期货混合策略必须显式声明 futuresInitialCash，可选 stockInitialCash。合约必须先由 Source Lake 发布 futures_contract_daily、futures_contract_spec_history、futures_cost_margin_history 三张真实数据集；缺任一张时生成/回测必须失败，禁止手写默认乘数、保证金、费用或价格。订单进入撮合前继续检查上市/退市日期、停牌、trading_phase、限价 tick、涨跌停、反向挂单自成交、保证金和可平今昨仓。".to_string(),
             },
+            ManualSection {
+                title: "trading.automatic_trade_protection(...)".to_string(),
+                detail: r#"当前股票/ETF策略的独立自动交易保护：trading.automatic_trade_protection({"buy_protection_days":3,"sell_cooldown_days":3,"max_holding_days":90,"locks":[{"symbol":"000001.SZ","start_date":"2026-09-11","end_date":null}]})。配置冻结到 runtimeExpressions.trading.automaticTradeProtection，回测、paper/live 共用内核；不并入全局风控。0/null/未填关闭对应周期；成交日及之后N个完整正式交易日内，买入保护禁止自动卖出及止盈止损，卖出冷却禁止自动增加仓位；只由真实成交启动或延长，拒绝/未成交/撤单不启动。最长持有按首次实际建仓后的正式交易日计数，加仓与部分卖出不重置，清仓后再开仓重置；日期锁定两端包含且高于自动退出，持仓占用真实预算和槽位。人工交易通过独立服务路径执行，仍校验权限、券商及T+1，不接受客户端origin旁路。持仓来源、实际成交或正式日历缺失时明确拒绝；期货与股票期货混合账户尚不支持此能力，不得悄悄忽略。旧trading.max_holding_days仍保留旧含义，不得和新配置声明不同最大周期。"#.to_string(),
+            },
             ManualSection {
                 title: "trading.rotation / order.* / order.modify / cancel.* / update_universe / subscribe".to_string(),
                 detail: "支持股票显式下单、期货 runtime action、撤单、AlgoOrder、动态 universe 和账户资金动作。可以用 trading.rotation(false) 关闭默认轮动链路，再用 trading.stage(\"open_auction\" | \"on_day\") 指定执行阶段；需要模拟 平台内核 的日内订阅保护时，可写 trading.subscription_guard(true)，未订阅 symbol 的显式订单会被拦截，TargetPortfolioSmart + AlgoOrder 会过滤未订阅标的。用 trading.schedule.daily().at([\"10:18\"]) / trading.schedule.weekly(weekday=5).at([\"10:18\"]) / trading.schedule.weekly(tradingday=-1).at([\"10:18\"]) / trading.schedule.monthly(tradingday=1).at([\"10:18\"]) 指定触发频率和分钟级 time_rule，然后写 order.shares(\"600000.SH\", 1000)、order.target_shares(\"600000.SH\", 2000)、order.value(\"600000.SH\", cash * 0.25)、order.target_percent(\"600000.SH\", 0.05)、order.limit_value(\"600000.SH\", cash * 0.25, open * 0.99, time_in_force=\"gtc\")、order.vwap_value(\"600000.SH\", cash * 0.25, \"09:31\", \"09:40\")、order.twap_percent(\"600000.SH\", 0.05, \"10:00\", \"10:30\")、order.target_portfolio_smart(weights={\"600000.SH\": 0.3, \"000001.SZ\": 0.2}, order_prices=VWAPOrder(930, 940), valuation_prices={\"600000.SH\": prev_close})、cancel.order(12345)、cancel.symbol(\"600000.SH\")、cancel.all()、update_universe([\"600000.SH\", \"000001.SZ\"])、subscribe([\"000001.SZ\"])、unsubscribe([\"000001.SZ\"])、account.deposit_withdraw(100000, receiving_days=0)、account.finance_repay(50000)、account.set_management_fee_rate(0.001)。股票订单和 target_portfolio_smart 支持可选关键字 time_in_force=\"day|ioc|fok|gtc\"，编译后写入 runtimeExpressions.trading.actions[].timeInForce：DAY 日内保留并在收盘 Expired，IOC 立即撤销未成交余量，FOK 必须全量可成交否则零成交，GTC 仅支持限价单并跨交易日保留；VWAP/TWAP 不接受 FOK/GTC。期货 action 必须由编译器写入结构化 runtimeExpressions，不得让策略源码直接构造 FuturesOrderIntent 或硬编码合约参数。symbol 使用标准证券/合约代码；数量、金额、仓位、时间窗、限价、order_id 和 symbol 列表都支持表达式；这些语句也支持放进 when/unless 条件块。".to_string(),

crates/fidc-core/src/universe.rs

@@ -83,7 +83,7 @@ impl SelectionContext<'_> {
         for factor in self.data.factor_snapshot_rows_on(self.decision_date) {
             if self
                 .dynamic_universe
-                .is_some_and(|symbols| !symbols.is_empty() && !symbols.contains(&factor.symbol))
+                .is_some_and(|symbols| !symbols.is_empty() && !symbols.contains(factor.symbol.as_str()))
             {
                 continue;
             }
@@ -307,7 +307,7 @@ mod tests {
     fn market(symbol: &str, price: f64) -> DailyMarketSnapshot {
         DailyMarketSnapshot {
             date: d(),
-            symbol: symbol.to_string(),
+            symbol: symbol.into(),
             timestamp: Some("2025-01-02 10:00:00".to_string()),
             day_open: price,
             open: price,
@@ -333,12 +333,13 @@ mod tests {
     fn factor(symbol: &str, market_cap_bn: f64) -> DailyFactorSnapshot {
         DailyFactorSnapshot {
             date: d(),
-            symbol: symbol.to_string(),
+            symbol: symbol.into(),
             market_cap_bn,
             free_float_cap_bn: market_cap_bn,
             pe_ttm: 10.0,
             turnover_ratio: Some(0.01),
             effective_turnover_ratio: Some(0.01),
+            adjustment_factor_backward1: None,
             extra_factors: Default::default(),
         }
     }
@@ -346,7 +347,7 @@ mod tests {
     fn candidate(symbol: &str, is_st: bool, is_kcb: bool) -> CandidateEligibility {
         CandidateEligibility {
             date: d(),
-            symbol: symbol.to_string(),
+            symbol: symbol.into(),
             is_st,
             is_star_st: false,
             is_new_listing: false,

crates/fidc-core/tests/automatic_trade_protection.rs

@@ -0,0 +1,490 @@
+use chrono::NaiveDate;
+use fidc_core::holding_policy::{AutomaticTradeLock, AutomaticTradeProtection};
+use fidc_core::{
+    BacktestConfig, BacktestEngine, BenchmarkSnapshot, BrokerSimulator, CandidateEligibility,
+    ChinaAShareCostModel, ChinaEquityRuleHooks, DailyMarketSnapshot, DataSet, Instrument,
+    MatchingType, OrderSide, PlatformExplicitOrderKind, PlatformExprStrategy,
+    PlatformExprStrategyConfig, PlatformTradeAction, PriceField,
+};
+
+fn d(day: u32) -> NaiveDate {
+    NaiveDate::from_ymd_opt(2026, 9, day).unwrap()
+}
+fn data() -> DataSet {
+    let dates = [11, 14, 15, 16, 17, 18].map(d);
+    DataSet::from_components(
+        vec![Instrument {
+            symbol: "000001.SZ".into(),
+            name: "测试".into(),
+            board: "SZ".into(),
+            round_lot: 100,
+            listed_at: Some(NaiveDate::from_ymd_opt(2020, 1, 1).unwrap()),
+            delisted_at: None,
+            status: "active".into(),
+        }],
+        dates
+            .iter()
+            .map(|date| DailyMarketSnapshot {
+                date: *date,
+                symbol: "000001.SZ".into(),
+                timestamp: Some(format!("{date} 15:00:00")),
+                day_open: 10.0,
+                open: 10.0,
+                high: 10.0,
+                low: 10.0,
+                close: 10.0,
+                last_price: 10.0,
+                bid1: 10.0,
+                ask1: 10.0,
+                prev_close: 10.0,
+                volume: 100_000,
+                minute_volume: 100_000,
+                bid1_volume: 100_000,
+                ask1_volume: 100_000,
+                trading_phase: Some("continuous".into()),
+                paused: false,
+                upper_limit: 11.0,
+                lower_limit: 9.0,
+                price_tick: 0.01,
+            })
+            .collect(),
+        dates
+            .iter()
+            .map(|date| fidc_core::DailyFactorSnapshot {
+                date: *date,
+                symbol: "000001.SZ".into(),
+                market_cap_bn: 10.0,
+                free_float_cap_bn: 10.0,
+                pe_ttm: 10.0,
+                turnover_ratio: None,
+                effective_turnover_ratio: None,
+                adjustment_factor_backward1: Some(1.0),
+                extra_factors: Default::default(),
+            })
+            .collect(),
+        dates
+            .iter()
+            .map(|date| CandidateEligibility {
+                date: *date,
+                symbol: "000001.SZ".into(),
+                is_st: false,
+                is_star_st: false,
+                is_new_listing: false,
+                is_paused: false,
+                allow_buy: true,
+                allow_sell: true,
+                is_kcb: false,
+                is_one_yuan: false,
+                risk_level_code: None,
+            })
+            .collect(),
+        dates
+            .iter()
+            .map(|date| BenchmarkSnapshot {
+                date: *date,
+                benchmark: "000300.SH".into(),
+                open: 100.0,
+                close: 100.0,
+                prev_close: 100.0,
+                volume: 1_000_000,
+            })
+            .collect(),
+    )
+    .unwrap()
+}
+fn action(quantity: &str, when: &str) -> PlatformTradeAction {
+    PlatformTradeAction::Order {
+        kind: PlatformExplicitOrderKind::Shares,
+        symbol: "000001.SZ".into(),
+        amount_expr: quantity.into(),
+        when_expr: Some(when.into()),
+        limit_price_expr: None,
+        time_in_force: None,
+        start_time_expr: None,
+        end_time_expr: None,
+        reason: "configured_strategy_action".into(),
+    }
+}
+
+#[test]
+fn observed_manual_trades_then_split_keep_real_fill_protection_and_lock_dates() {
+    for sell_during_lock in [false, true] {
+    let sale = if sell_during_lock {
+        ("manual-sell", "Sell", "2026-09-16T01:31:00Z", "2026-09-16T01:31:01Z", "5", "0.5", 200)
+    } else {
+        ("manual-sell", "Sell", "2026-09-14T01:31:00Z", "2026-09-14T01:31:01Z", "10", "0.5", 100)
+    };
+    let actions = [
+        ("new-buy", "Buy", "2026-09-14T01:30:00Z", "2026-09-14T01:30:01Z", "10", "0.25", 100),
+        ("late-buy", "Buy", "2026-09-11T06:00:00Z", "2026-09-14T01:30:02Z", "10", "0.75", 100),
+        sale,
+    ].into_iter().enumerate().map(|(index, (id, side, executed, observed, price, fee, quantity))| {
+        let executed: chrono::DateTime<chrono::Utc> = executed.parse().unwrap();
+        let observed: chrono::DateTime<chrono::Utc> = observed.parse().unwrap();
+        let created = executed - chrono::Duration::seconds(1);
+        serde_json::json!({"actionId":id,"source":"manual_security_trade","auditEventIds":[format!("audit-{id}")],
+            "confirmedAt":created,"confirmationObservedAt":created,"outcome":"orders_terminal","orders":[{
+                "orderId":id,"brokerOrderId":id,"sourceAdapter":"paper","symbol":"000001.SZ","side":side,"quantity":quantity,
+                "orderCreatedAt":created,"terminalObservedAt":observed,"terminalStatus":"filled","fills":[{
+                    "tradeId":id,"observationEventId":id,"observationSequence":index+1,
+                    "tradeDate":executed.date_naive(),"executedAt":executed,"observedAt":observed,
+                    "feeObservationEventId":id,"feeObservationSequence":index+1,"feeObservedAt":observed,
+                    "timestampPrecision":"second","quantity":quantity,"price":price,"totalFee":fee
+                }]
+            }]})
+    }).collect::<Vec<_>>();
+    let mut replay: fidc_core::manual_execution::ManualExecutionReplay = serde_json::from_value(serde_json::json!({
+        "schema":fidc_core::manual_execution::MANUAL_REPLAY_SCHEMA,"runtimeId":"r","accountId":"a",
+        "sourceContractSha256":"a".repeat(64),"contentSha256":"","observationCutoff":"2026-09-18T08:00:00Z","actions":actions,
+    })).unwrap();
+    replay.content_sha256 = replay.content_digest().unwrap();
+    let mut parts = data().snapshot_components();
+    for row in &mut parts.market {
+        if row.date >= d(15) {
+            row.day_open = 5.;
+            row.open = 5.;
+            row.high = 5.;
+            row.low = 5.;
+            row.close = 5.;
+            row.last_price = 5.;
+            row.bid1 = 5.;
+            row.ask1 = 5.;
+            row.prev_close = 5.;
+            row.upper_limit = 5.5;
+            row.lower_limit = 4.5;
+        }
+    }
+    parts.corporate_actions.push(fidc_core::CorporateAction {
+        date: d(15),
+        symbol: "000001.SZ".into(),
+        payable_date: None,
+        share_cash: 0.,
+        share_bonus: 1.,
+        share_gift: 0.,
+        issue_quantity: 0.,
+        issue_price: 0.,
+        reform: false,
+        adjust_factor: None,
+        successor_symbol: None,
+        successor_ratio: None,
+        successor_cash: None,
+    });
+    let data = DataSet::from_components_with_actions(
+        parts.instruments,
+        parts.market,
+        parts.factors,
+        parts.candidates,
+        parts.benchmarks,
+        parts.corporate_actions,
+    )
+    .unwrap();
+    let mut config = PlatformExprStrategyConfig::generic();
+    config.signal_symbol = "000001.SZ".into();
+    config.benchmark_symbol = "000300.SH".into();
+    config.rotation_enabled = false;
+    config.matching_type = MatchingType::CurrentBarClose;
+    config.volume_capacity_mode =
+        fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit;
+    config.automatic_trade_protection = AutomaticTradeProtection {
+        buy_protection_days: 3,
+        sell_cooldown_days: 3,
+        max_holding_days: 1,
+        locks: vec![AutomaticTradeLock {
+            symbol: "000001.SZ".into(),
+            start_date: d(16),
+            end_date: Some(d(17)),
+        }],
+    };
+    config.explicit_actions = vec![action("-200", "decision_date >= \"2026-09-14\"")];
+    let result = BacktestEngine::new(
+        data,
+        PlatformExprStrategy::new(config),
+        BrokerSimulator::new(ChinaAShareCostModel::default(), ChinaEquityRuleHooks)
+            .with_matching_type(MatchingType::CurrentBarClose)
+            .with_volume_capacity_mode(
+                fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit,
+            ),
+        BacktestConfig {
+            initial_cash: 10000.,
+            benchmark_code: "000300.SH".into(),
+            start_date: Some(d(11)),
+            end_date: Some(d(18)),
+            decision_lag_trading_days: 0,
+            execution_price_field: PriceField::Close,
+        },
+    )
+    .with_observed_manual_executions(replay)
+    .unwrap()
+    .run()
+    .unwrap();
+    assert_eq!(result.manual_executions.len(), 3);
+    assert_eq!(result.manual_executions[2].quantity_after, if sell_during_lock { 200 } else { 100 });
+    assert_eq!(result.fills.len(), 1, "{:?}", result.fills);
+    assert_eq!(
+        (
+            result.fills[0].date,
+            result.fills[0].side,
+            result.fills[0].quantity,
+            result.fills[0].price
+        ),
+        (d(18), OrderSide::Sell, 200, 5.)
+    );
+    assert!(result.fills[0].reason.contains("max_holding_days_exit"));
+    for day in [14, 15] {
+        for rule in ["buy_fill_protection", "sell_fill_cooldown"] {
+            if rule == "sell_fill_cooldown" && sell_during_lock { continue; }
+            assert!(result.risk_decisions.iter().any(|audit| audit.date == d(day)
+                && audit.symbol == "000001.SZ" && audit.rule_code == rule && !audit.accepted), "day={day} rule={rule}");
+        }
+    }
+    for day in [16, 17] {
+        assert!(result.risk_decisions.iter().any(|audit| audit.date == d(day)
+            && audit.symbol == "000001.SZ" && audit.rule_code == "automatic_trade_locked" && !audit.accepted));
+    }
+    assert!(
+        result
+            .daily_holdings
+            .iter()
+            .any(|row| row.date == d(15) && row.quantity == if sell_during_lock { 400 } else { 200 })
+    );
+    assert!(result.holdings_summary.is_empty());
+    assert!(
+        result
+            .equity_curve
+            .iter()
+            .all(|point| point.external_cash_flow == 0.)
+    );
+    }
+}
+
+fn run(policy: AutomaticTradeProtection) -> fidc_core::BacktestResult {
+    let mut config = PlatformExprStrategyConfig::generic();
+    config.volume_capacity_mode = fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit;
+    config.signal_symbol = "000001.SZ".into();
+    config.benchmark_symbol = "000300.SH".into();
+    config.rotation_enabled = false;
+    config.automatic_trade_protection = policy;
+    config.explicit_actions = vec![
+        action(
+            "100",
+            "decision_date == \"2026-09-11\" || decision_date == \"2026-09-18\"",
+        ),
+        action("-100", "decision_date >= \"2026-09-14\""),
+    ];
+    config.matching_type = MatchingType::CurrentBarClose;
+    let broker = BrokerSimulator::new(ChinaAShareCostModel::default(), ChinaEquityRuleHooks).with_volume_capacity_mode(fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit)
+        .with_matching_type(MatchingType::CurrentBarClose);
+    BacktestEngine::new(
+        data(),
+        PlatformExprStrategy::new(config),
+        broker,
+        BacktestConfig {
+            initial_cash: 10_000.0,
+            benchmark_code: "000300.SH".into(),
+            start_date: Some(d(11)),
+            end_date: Some(d(18)),
+            decision_lag_trading_days: 0,
+            execution_price_field: PriceField::Close,
+        },
+    )
+    .run()
+    .unwrap()
+}
+
+#[test]
+fn framework_protection_uses_fills_and_covers_explicit_strategy_orders() {
+    let result = run(AutomaticTradeProtection {
+        buy_protection_days: 3,
+        sell_cooldown_days: 3,
+        ..Default::default()
+    });
+    assert_eq!(
+        result
+            .fills
+            .iter()
+            .map(|fill| (fill.date, fill.side, fill.quantity))
+            .collect::<Vec<_>>(),
+        vec![(d(11), OrderSide::Buy, 100), (d(17), OrderSide::Sell, 100)]
+    );
+    assert!(!result.order_events.iter().any(|order| order.date == d(14)
+        || order.date == d(15)
+        || order.date == d(16)
+        || order.date == d(18)));
+}
+
+#[test]
+fn absolute_lock_blocks_initial_strategy_buy_without_a_rejected_order() {
+    let result = run(AutomaticTradeProtection {
+        locks: vec![AutomaticTradeLock {
+            symbol: "000001.SZ".into(),
+            start_date: d(11),
+            end_date: None,
+        }],
+        ..Default::default()
+    });
+    assert!(result.fills.is_empty());
+    assert!(result.order_events.is_empty());
+}
+
+#[test]
+fn maximum_holding_policy_applies_to_discrete_strategies_and_yields_to_buy_protection() {
+    let result = run(AutomaticTradeProtection {
+        max_holding_days: 1,
+        buy_protection_days: 3,
+        sell_cooldown_days: 3,
+        ..Default::default()
+    });
+    assert_eq!(
+        result
+            .fills
+            .iter()
+            .map(|fill| (fill.date, fill.side))
+            .collect::<Vec<_>>(),
+        vec![(d(11), OrderSide::Buy), (d(17), OrderSide::Sell)]
+    );
+    assert!(
+        result
+            .order_events
+            .iter()
+            .any(|order| order.reason == "max_holding_days_exit")
+    );
+}
+
+#[test]
+fn serialized_framework_policy_survives_shared_alias_normalization_and_rejects_conflicts() {
+    let policy = serde_json::json!({"buy_protection_days":3,"sell_cooldown_days":3,"max_holding_days":90,"locks":[{"symbol":"000001.SZ","start_date":"2026-09-11","end_date":null}]});
+    for key in ["automaticTradeProtection", "automatic_trade_protection"] {
+        let value = serde_json::json!({"runtimeExpressions":{"trading":{key:policy}}});
+        let cfg = fidc_core::platform_expr_config_from_value("test", "000001.SZ", &value).unwrap();
+        assert_eq!(cfg.automatic_trade_protection.buy_protection_days, 3);
+        assert_eq!(cfg.max_holding_days, Some(90));
+        assert_eq!(cfg.automatic_trade_protection.locks.len(), 1);
+    }
+    let conflict = serde_json::json!({"runtimeExpressions":{"trading":{"maxHoldingDays":30,"automaticTradeProtection":policy}}});
+    assert!(
+        fidc_core::platform_expr_config_from_value("test", "000001.SZ", &conflict)
+            .unwrap_err()
+            .to_string()
+            .contains("conflicting maximum")
+    );
+    let unknown = serde_json::json!({"runtimeExpressions":{"trading":{"automaticTradeProtection":{"origin":"manual"}}}});
+    assert!(fidc_core::platform_expr_config_from_value("test", "000001.SZ", &unknown).is_err());
+}
+
+#[test]
+fn locked_holding_keeps_its_slot_even_when_cash_can_buy_the_next_candidate() {
+    let base = data();
+    let dates = [11, 14, 15, 16, 17, 18].map(d);
+    let symbols = ["000001.SZ", "000002.SZ"];
+    let dataset = DataSet::from_components(
+        symbols
+            .iter()
+            .map(|symbol| {
+                let mut row = base.instruments()["000001.SZ"].clone();
+                row.symbol = (*symbol).into();
+                row
+            })
+            .collect(),
+        dates
+            .iter()
+            .flat_map(|date| {
+                symbols.iter().map(|symbol| {
+                    let mut row = base.market(*date, "000001.SZ").unwrap().clone();
+                    row.symbol = (*symbol).into();
+                    row
+                })
+            })
+            .collect(),
+        dates
+            .iter()
+            .flat_map(|date| {
+                symbols.iter().map(|symbol| {
+                    let mut row = base.factor(*date, "000001.SZ").unwrap().clone();
+                    row.symbol = (*symbol).into();
+                    row
+                })
+            })
+            .collect(),
+        dates
+            .iter()
+            .flat_map(|date| {
+                symbols.iter().map(|symbol| {
+                    let mut row = base.candidate(*date, "000001.SZ").unwrap().clone();
+                    row.symbol = (*symbol).into();
+                    row
+                })
+            })
+            .collect(),
+        dates
+            .iter()
+            .map(|date| BenchmarkSnapshot {
+                date: *date,
+                benchmark: "000300.SH".into(),
+                open: 100.0,
+                close: 100.0,
+                prev_close: 100.0,
+                volume: 100_000,
+            })
+            .collect(),
+    )
+    .unwrap();
+    let mut config = PlatformExprStrategyConfig::generic();
+    config.volume_capacity_mode = fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit;
+    config.signal_symbol = "000001.SZ".into();
+    config.benchmark_symbol = "000300.SH".into();
+    config.strategy_name = "protection_test".into();
+    config.max_positions = 1;
+    config.selection_limit_expr = "1".into();
+    config.refresh_rate = 1;
+    config.exposure_expr = "0.5".into();
+    config.market_cap_lower_expr = "0".into();
+    config.market_cap_upper_expr = "100".into();
+    config.stock_filter_expr="(decision_date == \"2026-09-11\" && symbol == \"000001.SZ\") || (decision_date != \"2026-09-11\" && symbol == \"000002.SZ\")".into();
+    config.automatic_trade_protection = AutomaticTradeProtection {
+        locks: vec![AutomaticTradeLock {
+            symbol: "000001.SZ".into(),
+            start_date: d(14),
+            end_date: Some(d(16)),
+        }],
+        ..Default::default()
+    };
+    let broker = BrokerSimulator::new(ChinaAShareCostModel::default(), ChinaEquityRuleHooks).with_volume_capacity_mode(fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit)
+        .with_matching_type(MatchingType::CurrentBarClose);
+    let result = BacktestEngine::new(
+        dataset,
+        PlatformExprStrategy::new(config),
+        broker,
+        BacktestConfig {
+            initial_cash: 10_000.0,
+            benchmark_code: "000300.SH".into(),
+            start_date: Some(d(11)),
+            end_date: Some(d(18)),
+            decision_lag_trading_days: 0,
+            execution_price_field: PriceField::Close,
+        },
+    )
+    .run()
+    .unwrap();
+    assert_eq!(
+        result
+            .fills
+            .first()
+            .map(|fill| (fill.symbol.as_str(), fill.date)),
+        Some(("000001.SZ", d(11)))
+    );
+    assert!(
+        !result
+            .fills
+            .iter()
+            .any(|fill| [d(14), d(15), d(16)].contains(&fill.date)),
+        "{:?}",
+        result.fills
+    );
+    assert!(
+        result.fills.iter().any(|fill| fill.symbol == "000002.SZ"
+            && fill.side == OrderSide::Buy
+            && fill.date == d(17)),
+        "{:?}",
+        result.fills
+    );
+}

crates/fidc-core/tests/core_rules.rs

@@ -15,7 +15,7 @@ fn d(year: i32, month: u32, day: u32) -> NaiveDate {
 fn candidate() -> CandidateEligibility {
     CandidateEligibility {
         date: d(2024, 1, 3),
-        symbol: "000001.SZ".to_string(),
+        symbol: "000001.SZ".into(),
         is_st: false,
         is_star_st: false,
         is_new_listing: false,
@@ -31,7 +31,7 @@ fn candidate() -> CandidateEligibility {
 fn snapshot(open: f64, upper_limit: f64, lower_limit: f64) -> DailyMarketSnapshot {
     DailyMarketSnapshot {
         date: d(2024, 1, 3),
-        symbol: "000001.SZ".to_string(),
+        symbol: "000001.SZ".into(),
         timestamp: Some("2024-01-03 10:18:00".to_string()),
         day_open: open,
         open,
@@ -256,7 +256,7 @@ fn china_rule_hooks_allow_sell_when_last_price_is_above_lower_limit() {
 
     let snapshot = DailyMarketSnapshot {
         date: d(2024, 4, 7),
-        symbol: "000001.SZ".to_string(),
+        symbol: "000001.SZ".into(),
         timestamp: Some("2024-04-07 10:18:00".to_string()),
         day_open: 2.53,
         open: 2.53,

crates/fidc-core/tests/corporate_actions.rs

@@ -90,6 +90,7 @@ impl Strategy for BuyAndHoldStrategy {
         ctx: &StrategyContext<'_>,
     ) -> Result<StrategyDecision, fidc_core::BacktestError> {
         Ok(StrategyDecision {
+            buy_denials: Default::default(),
             rebalance: false,
             target_weights: BTreeMap::new(),
             exit_symbols: BTreeSet::new(),
@@ -112,7 +113,7 @@ impl Strategy for BuyAndHoldStrategy {
 fn stock_market_snapshot(date: NaiveDate) -> DailyMarketSnapshot {
     DailyMarketSnapshot {
         date,
-        symbol: "000001.SZ".to_string(),
+        symbol: "000001.SZ".into(),
         timestamp: Some(format!("{date} 10:18:00")),
         day_open: 10.0,
         open: 10.0,
@@ -138,20 +139,21 @@ fn stock_market_snapshot(date: NaiveDate) -> DailyMarketSnapshot {
 fn stock_factor_snapshot(date: NaiveDate) -> DailyFactorSnapshot {
     DailyFactorSnapshot {
         date,
-        symbol: "000001.SZ".to_string(),
+        symbol: "000001.SZ".into(),
         market_cap_bn: 20.0,
         free_float_cap_bn: 18.0,
         pe_ttm: 10.0,
         turnover_ratio: Some(1.0),
         effective_turnover_ratio: Some(1.0),
-        extra_factors: BTreeMap::new(),
+        adjustment_factor_backward1: None,
+        extra_factors: Default::default(),
     }
 }
 
 fn stock_candidate(date: NaiveDate) -> CandidateEligibility {
     CandidateEligibility {
         date,
-        symbol: "000001.SZ".to_string(),
+        symbol: "000001.SZ".into(),
         is_st: false,
         is_star_st: false,
         is_new_listing: false,
@@ -175,6 +177,157 @@ fn benchmark_snapshot(date: NaiveDate) -> BenchmarkSnapshot {
     }
 }
 
+#[test]
+fn successor_conversion_depletes_older_source_lots_before_newer_successor_buys() {
+    struct ConvertedSale {
+        dates: [NaiveDate; 3],
+        seen: std::rc::Rc<std::cell::RefCell<Option<(Option<NaiveDate>, Option<NaiveDate>)>>>,
+    }
+    impl Strategy for ConvertedSale {
+        fn name(&self) -> &str {
+            "successor FIFO"
+        }
+        fn on_day(
+            &mut self,
+            ctx: &StrategyContext<'_>,
+        ) -> Result<StrategyDecision, fidc_core::BacktestError> {
+            let (symbol, quantity) = if ctx.execution_date == self.dates[0] {
+                ("000001.SZ", 100)
+            } else if ctx.execution_date == self.dates[1] {
+                ("000002.SZ", 100)
+            } else {
+                let holding = ctx.portfolio.position("000002.SZ").unwrap();
+                *self.seen.borrow_mut() = Some((holding.opened_date(), holding.last_buy_date()));
+                ("000002.SZ", -200)
+            };
+            Ok(StrategyDecision {
+                order_intents: vec![fidc_core::OrderIntent::Shares {
+                    symbol: symbol.into(),
+                    quantity,
+                    reason: "dated lot test".into(),
+                }],
+                ..Default::default()
+            })
+        }
+    }
+    let dates = [d(2026, 9, 11), d(2026, 9, 14), d(2026, 9, 15)];
+    let symbols = ["000001.SZ", "000002.SZ"];
+    let mut market = Vec::new();
+    let mut factors = Vec::new();
+    let mut candidates = Vec::new();
+    for date in dates {
+        for symbol in symbols {
+            let price = if symbol == symbols[0] {
+                10.
+            } else if date == dates[2] {
+                6.
+            } else {
+                20.
+            };
+            let mut quote = stock_market_snapshot(date);
+            quote.symbol = symbol.into();
+            quote.day_open = price;
+            quote.open = price;
+            quote.high = price;
+            quote.low = price;
+            quote.close = price;
+            quote.last_price = price;
+            quote.bid1 = price;
+            quote.ask1 = price;
+            quote.prev_close = price;
+            quote.upper_limit = price * 1.1;
+            quote.lower_limit = price * 0.9;
+            market.push(quote);
+            let mut factor = stock_factor_snapshot(date);
+            factor.symbol = symbol.into();
+            factors.push(factor);
+            let mut candidate = stock_candidate(date);
+            candidate.symbol = symbol.into();
+            candidates.push(candidate);
+        }
+    }
+    let data = DataSet::from_components_with_actions(
+        symbols
+            .into_iter()
+            .map(|symbol| Instrument {
+                symbol: symbol.into(),
+                name: symbol.into(),
+                board: "SZ".into(),
+                round_lot: 100,
+                listed_at: Some(d(2020, 1, 1)),
+                delisted_at: None,
+                status: "active".into(),
+            })
+            .collect(),
+        market,
+        factors,
+        candidates,
+        dates.map(benchmark_snapshot).into(),
+        vec![CorporateAction {
+            date: dates[2],
+            symbol: symbols[0].into(),
+            payable_date: None,
+            share_cash: 0.,
+            share_bonus: 0.,
+            share_gift: 0.,
+            issue_quantity: 0.,
+            issue_price: 0.,
+            reform: false,
+            adjust_factor: None,
+            successor_symbol: Some(symbols[1].into()),
+            successor_ratio: Some(2.),
+            successor_cash: Some(0.),
+        }],
+    )
+    .unwrap();
+    let seen = std::rc::Rc::new(std::cell::RefCell::new(None));
+    let broker = BrokerSimulator::new_with_execution_price(
+        ChinaAShareCostModel::default(),
+        ChinaEquityRuleHooks,
+        PriceField::Open,
+    )
+    .with_matching_type(fidc_core::MatchingType::NextBarOpen)
+    .with_volume_limit(false)
+    .with_liquidity_limit(false);
+    let result = BacktestEngine::new(
+        data,
+        ConvertedSale {
+            dates,
+            seen: seen.clone(),
+        },
+        broker,
+        BacktestConfig {
+            initial_cash: 10000.,
+            benchmark_code: "000300.SH".into(),
+            start_date: Some(dates[0]),
+            end_date: Some(dates[2]),
+            decision_lag_trading_days: 0,
+            execution_price_field: PriceField::Open,
+        },
+    )
+    .run()
+    .unwrap();
+    assert_eq!(*seen.borrow(), Some((Some(dates[0]), Some(dates[1]))));
+    assert_eq!(result.fills.len(), 3);
+    assert_eq!(result.fills[2].quantity, 200);
+    assert_eq!(result.fills[2].symbol, symbols[1]);
+    let remaining = result
+        .holdings_summary
+        .iter()
+        .find(|row| row.symbol == symbols[1])
+        .unwrap();
+    assert_eq!(remaining.quantity, 100);
+    assert_eq!(remaining.realized_pnl, 200.);
+    assert!(
+        result
+            .position_events
+            .iter()
+            .any(|event| event.symbol == symbols[0]
+                && event.quantity_after == 0
+                && event.reason.starts_with("successor_conversion"))
+    );
+}
+
 #[test]
 fn engine_reinvests_dividend_receivable_in_round_lots() {
     let buy_date = d(2025, 1, 1);
@@ -193,7 +346,7 @@ fn engine_reinvests_dividend_receivable_in_round_lots() {
         vec![
             DailyMarketSnapshot {
                 date: buy_date,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 timestamp: Some("2025-01-01 10:18:00".to_string()),
                 day_open: 10.0,
                 open: 10.0,
@@ -216,7 +369,7 @@ fn engine_reinvests_dividend_receivable_in_round_lots() {
             },
             DailyMarketSnapshot {
                 date: ex_date,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 timestamp: Some("2025-01-02 10:18:00".to_string()),
                 day_open: 10.0,
                 open: 10.0,
@@ -239,7 +392,7 @@ fn engine_reinvests_dividend_receivable_in_round_lots() {
             },
             DailyMarketSnapshot {
                 date: payable_date,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 timestamp: Some("2025-01-03 10:18:00".to_string()),
                 day_open: 10.0,
                 open: 10.0,
@@ -264,39 +417,42 @@ fn engine_reinvests_dividend_receivable_in_round_lots() {
         vec![
             DailyFactorSnapshot {
                 date: buy_date,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 market_cap_bn: 20.0,
                 free_float_cap_bn: 18.0,
                 pe_ttm: 10.0,
                 turnover_ratio: Some(1.0),
                 effective_turnover_ratio: Some(1.0),
-                extra_factors: BTreeMap::new(),
+                adjustment_factor_backward1: None,
+                extra_factors: Default::default(),
             },
             DailyFactorSnapshot {
                 date: ex_date,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 market_cap_bn: 20.0,
                 free_float_cap_bn: 18.0,
                 pe_ttm: 10.0,
                 turnover_ratio: Some(1.0),
                 effective_turnover_ratio: Some(1.0),
-                extra_factors: BTreeMap::new(),
+                adjustment_factor_backward1: None,
+                extra_factors: Default::default(),
             },
             DailyFactorSnapshot {
                 date: payable_date,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 market_cap_bn: 20.0,
                 free_float_cap_bn: 18.0,
                 pe_ttm: 10.0,
                 turnover_ratio: Some(1.0),
                 effective_turnover_ratio: Some(1.0),
-                extra_factors: BTreeMap::new(),
+                adjustment_factor_backward1: None,
+                extra_factors: Default::default(),
             },
         ],
         vec![
             CandidateEligibility {
                 date: buy_date,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,
@@ -309,7 +465,7 @@ fn engine_reinvests_dividend_receivable_in_round_lots() {
             },
             CandidateEligibility {
                 date: ex_date,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,
@@ -322,7 +478,7 @@ fn engine_reinvests_dividend_receivable_in_round_lots() {
             },
             CandidateEligibility {
                 date: payable_date,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,
@@ -389,7 +545,7 @@ fn engine_reinvests_dividend_receivable_in_round_lots() {
                 .with_minimum_commission(0.0),
             ChinaEquityRuleHooks::default(),
             PriceField::Open,
-        ),
+        ).with_volume_capacity_mode(fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit),
         BacktestConfig {
             initial_cash: 11_008.0,
             benchmark_code: "000300.SH".to_string(),
@@ -470,7 +626,7 @@ fn engine_settles_same_day_dividend_after_split_for_aiquant_semantics() {
             ChinaAShareCostModel::default(),
             ChinaEquityRuleHooks::default(),
             PriceField::Open,
-        ),
+        ).with_volume_capacity_mode(fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit),
         BacktestConfig {
             initial_cash: 11_008.0,
             benchmark_code: "000300.SH".to_string(),

crates/fidc-core/tests/decision_quote_preload.rs

@@ -2,9 +2,10 @@ use chrono::{Duration, NaiveDate, NaiveTime};
 use fidc_core::{
     BacktestConfig, BacktestEngine, BenchmarkSnapshot, BrokerSimulator, CandidateEligibility,
     ChinaAShareCostModel, ChinaEquityRuleHooks, DailyFactorSnapshot, DailyMarketSnapshot, DataSet,
-    IntradayExecutionQuote, MatchingType, OrderIntent, PriceField, Strategy, StrategyContext,
+    Instrument, IntradayExecutionQuote, MatchingType, OrderIntent, PriceField, Strategy, StrategyContext,
     StrategyDecision,
 };
+use std::collections::BTreeSet;
 use std::sync::{Arc, Mutex};
 
 fn d(year: i32, month: u32, day: u32) -> NaiveDate {
@@ -15,6 +16,18 @@ fn t(hour: u32, minute: u32, second: u32) -> NaiveTime {
     NaiveTime::from_hms_opt(hour, minute, second).expect("valid time")
 }
 
+fn fixture_instruments() -> Vec<Instrument> {
+    vec![Instrument {
+        symbol: "000001.SZ".to_string(),
+        name: "quote-plan-fixture".to_string(),
+        board: "SZ".to_string(),
+        round_lot: 100,
+        listed_at: Some(d(2020, 1, 1)),
+        delisted_at: None,
+        status: "active".to_string(),
+    }]
+}
+
 #[derive(Default)]
 struct DecisionQuoteReader {
     day_count: usize,
@@ -62,16 +75,237 @@ impl Strategy for DecisionQuoteReader {
     }
 }
 
+struct NoLoaderDecisionQuoteStrategy {
+    symbol_plan_calls: Arc<Mutex<usize>>,
+}
+
+impl Strategy for NoLoaderDecisionQuoteStrategy {
+    fn name(&self) -> &str {
+        "no_loader_decision_quote_strategy"
+    }
+
+    fn decision_quote_times(&self) -> Vec<NaiveTime> {
+        vec![t(10, 18, 0)]
+    }
+
+    fn decision_quote_symbols(
+        &mut self,
+        _ctx: &StrategyContext<'_>,
+    ) -> Result<BTreeSet<String>, fidc_core::BacktestError> {
+        *self
+            .symbol_plan_calls
+            .lock()
+            .expect("symbol plan counter mutex") += 1;
+        Ok(BTreeSet::new())
+    }
+}
+
+fn single_day_quote_plan_data(date: NaiveDate) -> DataSet {
+    DataSet::from_components(
+        fixture_instruments(),
+        vec![DailyMarketSnapshot {
+            date,
+            symbol: "000001.SZ".into(),
+            timestamp: Some(format!("{date} 15:00:00")),
+            day_open: 10.0,
+            open: 10.0,
+            high: 10.2,
+            low: 9.9,
+            close: 10.0,
+            last_price: 10.0,
+            bid1: 10.0,
+            ask1: 10.0,
+            prev_close: 9.8,
+            volume: 10_000,
+            minute_volume: 1_000,
+            bid1_volume: 10_000,
+            ask1_volume: 10_000,
+            trading_phase: Some("continuous".to_string()),
+            paused: false,
+            upper_limit: 10.78,
+            lower_limit: 8.82,
+            price_tick: 0.01,
+        }],
+        vec![DailyFactorSnapshot {
+            date,
+            symbol: "000001.SZ".into(),
+            market_cap_bn: 10.0,
+            free_float_cap_bn: 10.0,
+            pe_ttm: 10.0,
+            turnover_ratio: None,
+            effective_turnover_ratio: None,
+            adjustment_factor_backward1: None,
+            extra_factors: Default::default(),
+        }],
+        vec![CandidateEligibility {
+            date,
+            symbol: "000001.SZ".into(),
+            is_st: false,
+            is_star_st: false,
+            is_new_listing: false,
+            is_paused: false,
+            allow_buy: true,
+            allow_sell: true,
+            is_kcb: false,
+            is_one_yuan: false,
+            risk_level_code: None,
+        }],
+        vec![BenchmarkSnapshot {
+            date,
+            benchmark: "000852.SH".to_string(),
+            open: 1000.0,
+            close: 1001.0,
+            prev_close: 999.0,
+            volume: 1_000_000,
+        }],
+    )
+    .expect("dataset")
+}
+
+#[test]
+fn runtime_account_dependent_quote_scope_uses_the_actual_account() {
+    struct AccountDependentQuoteReader;
+    impl Strategy for AccountDependentQuoteReader {
+        fn name(&self) -> &str { "account_dependent_quote_reader" }
+        fn decision_quote_times(&self) -> Vec<NaiveTime> { vec![t(10, 18, 0)] }
+        fn decision_quote_symbols(&mut self, ctx: &StrategyContext<'_>) -> Result<BTreeSet<String>, fidc_core::BacktestError> {
+            Ok(if ctx.portfolio.cash() < 50_000.0 {
+                BTreeSet::from(["000001.SZ".into()])
+            } else { BTreeSet::new() })
+        }
+        fn on_day(&mut self, ctx: &StrategyContext<'_>) -> Result<StrategyDecision, fidc_core::BacktestError> {
+            let loaded = ctx.data.execution_quotes_on(ctx.execution_date, "000001.SZ").iter().any(|quote|
+                quote.timestamp.time()==t(10,17,59) && quote.last_price==10.0);
+            assert_eq!(loaded, ctx.portfolio.cash() < 50_000.0,
+                "quote scope must match this account, not a fixed-capital planning account");
+            Ok(StrategyDecision::default())
+        }
+    }
+    let date = d(2026, 1, 5);
+    for initial_cash in [10_000.0, 100_000.0] {
+    let broker = BrokerSimulator::new_with_execution_price(
+        ChinaAShareCostModel::default(), ChinaEquityRuleHooks, PriceField::Close,
+    ).with_volume_capacity_mode(fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit)
+        .with_matching_type(MatchingType::CurrentBarClose);
+    let config = BacktestConfig {
+        initial_cash, benchmark_code:"000852.SH".into(),
+        start_date:Some(date), end_date:Some(date), decision_lag_trading_days:0,
+        execution_price_field:PriceField::Close,
+    };
+    let mut engine = BacktestEngine::new(single_day_quote_plan_data(date), AccountDependentQuoteReader, broker, config)
+        .with_execution_quote_loader(move |request| Ok(request.symbols.into_iter().map(|symbol| IntradayExecutionQuote {
+            observation_kind:Default::default(), date:request.date, symbol,
+            timestamp:request.date.and_time(t(10,17,59)), last_price:10.0,bid1:10.0,ask1:10.0,
+            bid1_volume:10_000,ask1_volume:10_000,volume_delta:10_000,amount_delta:100_000.0,
+            trading_phase:Some("continuous".into()),
+        }).collect()));
+    engine.run().expect("account-dependent quote planning");
+    }
+}
+
+#[test]
+fn engine_resolves_the_runtime_strategy_scope_when_a_loader_exists() {
+    let date = d(2026, 1, 5);
+    let data = single_day_quote_plan_data(date);
+    let broker = BrokerSimulator::new_with_execution_price(
+        ChinaAShareCostModel::default(),
+        ChinaEquityRuleHooks,
+        PriceField::Close,
+    ).with_volume_capacity_mode(fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit)
+    .with_matching_type(MatchingType::CurrentBarClose);
+    let config = BacktestConfig {
+        initial_cash: 10_000.0,
+        benchmark_code: "000852.SH".to_string(),
+        start_date: Some(date),
+        end_date: Some(date),
+        decision_lag_trading_days: 0,
+        execution_price_field: PriceField::Close,
+    };
+    let symbol_plan_calls = Arc::new(Mutex::new(0usize));
+    let loader_calls = Arc::new(Mutex::new(0usize));
+    let strategy = NoLoaderDecisionQuoteStrategy {
+        symbol_plan_calls: Arc::clone(&symbol_plan_calls),
+    };
+    let captured_loader_calls = Arc::clone(&loader_calls);
+    let mut engine = BacktestEngine::new(data, strategy, broker, config)
+        .with_execution_quote_loader(move |request| {
+            *captured_loader_calls.lock().expect("loader counter mutex") += 1;
+            Ok(request
+                .symbols
+                .into_iter()
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
+                    date: request.date,
+                    symbol,
+                    timestamp: request.date.and_time(t(10, 17, 59)),
+                    last_price: 10.0,
+                    bid1: 10.0,
+                    ask1: 10.0,
+                    bid1_volume: 10_000,
+                    ask1_volume: 10_000,
+                    volume_delta: 10_000,
+                    amount_delta: 100_000.0,
+                    trading_phase: Some("continuous".to_string()),
+                })
+                .collect())
+        });
+
+    engine.run().expect("backtest should run");
+
+    assert_eq!(
+        *symbol_plan_calls.lock().expect("symbol plan counter mutex"),
+        1,
+        "quote planning must use the actual run context"
+    );
+    assert_eq!(
+        *loader_calls.lock().expect("loader counter mutex"),
+        0,
+        "an empty runtime scope must not fetch unrequested symbols"
+    );
+}
+
+#[test]
+fn engine_skips_decision_quote_symbol_plan_without_loader() {
+    let date = d(2026, 1, 5);
+    let data = single_day_quote_plan_data(date);
+    let broker = BrokerSimulator::new_with_execution_price(
+        ChinaAShareCostModel::default(),
+        ChinaEquityRuleHooks,
+        PriceField::Close,
+    ).with_volume_capacity_mode(fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit)
+    .with_matching_type(MatchingType::CurrentBarClose);
+    let config = BacktestConfig {
+        initial_cash: 10_000.0,
+        benchmark_code: "000852.SH".to_string(),
+        start_date: Some(date),
+        end_date: Some(date),
+        decision_lag_trading_days: 0,
+        execution_price_field: PriceField::Close,
+    };
+    let symbol_plan_calls = Arc::new(Mutex::new(0usize));
+    let strategy = NoLoaderDecisionQuoteStrategy {
+        symbol_plan_calls: Arc::clone(&symbol_plan_calls),
+    };
+    let mut engine = BacktestEngine::new(data, strategy, broker, config);
+
+    engine.run().expect("backtest should run");
+
+    assert_eq!(
+        *symbol_plan_calls.lock().expect("symbol plan counter mutex"),
+        0,
+        "a preloaded/no-loader engine cannot use a newly computed quote symbol plan"
+    );
+}
+
 #[test]
 fn engine_preloads_declared_decision_quotes_for_current_positions() {
     let first = d(2026, 1, 5);
     let second = d(2026, 1, 6);
     let data = DataSet::from_components(
-        Vec::new(),
+        fixture_instruments(),
         vec![
             DailyMarketSnapshot {
                 date: first,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 timestamp: Some("2026-01-05 15:00:00".to_string()),
                 day_open: 10.0,
                 open: 10.0,
@@ -94,7 +328,7 @@ fn engine_preloads_declared_decision_quotes_for_current_positions() {
             },
             DailyMarketSnapshot {
                 date: second,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 timestamp: Some("2026-01-06 15:00:00".to_string()),
                 day_open: 10.5,
                 open: 10.5,
@@ -119,29 +353,31 @@ fn engine_preloads_declared_decision_quotes_for_current_positions() {
         vec![
             DailyFactorSnapshot {
                 date: first,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 market_cap_bn: 10.0,
                 free_float_cap_bn: 10.0,
                 pe_ttm: 10.0,
                 turnover_ratio: None,
                 effective_turnover_ratio: None,
+                adjustment_factor_backward1: None,
                 extra_factors: Default::default(),
             },
             DailyFactorSnapshot {
                 date: second,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 market_cap_bn: 10.0,
                 free_float_cap_bn: 10.0,
                 pe_ttm: 10.0,
                 turnover_ratio: None,
                 effective_turnover_ratio: None,
+                adjustment_factor_backward1: None,
                 extra_factors: Default::default(),
             },
         ],
         vec![
             CandidateEligibility {
                 date: first,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,
@@ -154,7 +390,7 @@ fn engine_preloads_declared_decision_quotes_for_current_positions() {
             },
             CandidateEligibility {
                 date: second,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,
@@ -191,7 +427,7 @@ fn engine_preloads_declared_decision_quotes_for_current_positions() {
         ChinaAShareCostModel::default(),
         ChinaEquityRuleHooks,
         PriceField::Last,
-    )
+    ).with_volume_capacity_mode(fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit)
     .with_matching_type(MatchingType::MinuteLast)
     .with_intraday_execution_start_time(t(10, 40, 0));
     let config = BacktestConfig {
@@ -211,7 +447,7 @@ fn engine_preloads_declared_decision_quotes_for_current_positions() {
             Ok(request
                 .symbols
                 .into_iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date: request.date,
                     symbol,
                     timestamp: request.date.and_time(t(10, 39, 59)),
@@ -235,11 +471,11 @@ fn engine_reuses_preloaded_decision_quotes_without_loader_call() {
     let first = d(2026, 1, 5);
     let second = d(2026, 1, 6);
     let data = DataSet::from_components_with_actions_and_quotes(
-        Vec::new(),
+        fixture_instruments(),
         vec![
             DailyMarketSnapshot {
                 date: first,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 timestamp: Some("2026-01-05 15:00:00".to_string()),
                 day_open: 10.0,
                 open: 10.0,
@@ -262,7 +498,7 @@ fn engine_reuses_preloaded_decision_quotes_without_loader_call() {
             },
             DailyMarketSnapshot {
                 date: second,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 timestamp: Some("2026-01-06 15:00:00".to_string()),
                 day_open: 10.5,
                 open: 10.5,
@@ -287,29 +523,31 @@ fn engine_reuses_preloaded_decision_quotes_without_loader_call() {
         vec![
             DailyFactorSnapshot {
                 date: first,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 market_cap_bn: 10.0,
                 free_float_cap_bn: 10.0,
                 pe_ttm: 10.0,
                 turnover_ratio: None,
                 effective_turnover_ratio: None,
+                adjustment_factor_backward1: None,
                 extra_factors: Default::default(),
             },
             DailyFactorSnapshot {
                 date: second,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 market_cap_bn: 10.0,
                 free_float_cap_bn: 10.0,
                 pe_ttm: 10.0,
                 turnover_ratio: None,
                 effective_turnover_ratio: None,
+                adjustment_factor_backward1: None,
                 extra_factors: Default::default(),
             },
         ],
         vec![
             CandidateEligibility {
                 date: first,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,
@@ -322,7 +560,7 @@ fn engine_reuses_preloaded_decision_quotes_without_loader_call() {
             },
             CandidateEligibility {
                 date: second,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,
@@ -354,7 +592,7 @@ fn engine_reuses_preloaded_decision_quotes_without_loader_call() {
         ],
         Vec::new(),
         vec![
-            IntradayExecutionQuote {
+            IntradayExecutionQuote { observation_kind: Default::default(),
                 date: first,
                 symbol: "000001.SZ".to_string(),
                 timestamp: first.and_time(t(10, 39, 59)),
@@ -367,7 +605,7 @@ fn engine_reuses_preloaded_decision_quotes_without_loader_call() {
                 amount_delta: 100_000.0,
                 trading_phase: Some("continuous".to_string()),
             },
-            IntradayExecutionQuote {
+            IntradayExecutionQuote { observation_kind: Default::default(),
                 date: second,
                 symbol: "000001.SZ".to_string(),
                 timestamp: second.and_time(t(10, 39, 59)),
@@ -388,7 +626,7 @@ fn engine_reuses_preloaded_decision_quotes_without_loader_call() {
         ChinaAShareCostModel::default(),
         ChinaEquityRuleHooks,
         PriceField::Last,
-    )
+    ).with_volume_capacity_mode(fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit)
     .with_matching_type(MatchingType::MinuteLast)
     .with_intraday_execution_start_time(t(10, 40, 0));
     let config = BacktestConfig {
@@ -468,11 +706,11 @@ fn engine_loads_distinct_decision_quote_times_on_same_day() {
     let first = d(2026, 1, 5);
     let second = d(2026, 1, 6);
     let data = DataSet::from_components(
-        Vec::new(),
+        fixture_instruments(),
         vec![
             DailyMarketSnapshot {
                 date: first,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 timestamp: Some("2026-01-05 15:00:00".to_string()),
                 day_open: 10.0,
                 open: 10.0,
@@ -495,7 +733,7 @@ fn engine_loads_distinct_decision_quote_times_on_same_day() {
             },
             DailyMarketSnapshot {
                 date: second,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 timestamp: Some("2026-01-06 15:00:00".to_string()),
                 day_open: 10.5,
                 open: 10.5,
@@ -520,29 +758,31 @@ fn engine_loads_distinct_decision_quote_times_on_same_day() {
         vec![
             DailyFactorSnapshot {
                 date: first,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 market_cap_bn: 10.0,
                 free_float_cap_bn: 10.0,
                 pe_ttm: 10.0,
                 turnover_ratio: None,
                 effective_turnover_ratio: None,
+                adjustment_factor_backward1: None,
                 extra_factors: Default::default(),
             },
             DailyFactorSnapshot {
                 date: second,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 market_cap_bn: 10.0,
                 free_float_cap_bn: 10.0,
                 pe_ttm: 10.0,
                 turnover_ratio: None,
                 effective_turnover_ratio: None,
+                adjustment_factor_backward1: None,
                 extra_factors: Default::default(),
             },
         ],
         vec![
             CandidateEligibility {
                 date: first,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,
@@ -555,7 +795,7 @@ fn engine_loads_distinct_decision_quote_times_on_same_day() {
             },
             CandidateEligibility {
                 date: second,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,
@@ -592,7 +832,7 @@ fn engine_loads_distinct_decision_quote_times_on_same_day() {
         ChinaAShareCostModel::default(),
         ChinaEquityRuleHooks,
         PriceField::Last,
-    )
+    ).with_volume_capacity_mode(fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit)
     .with_matching_type(MatchingType::MinuteLast)
     .with_intraday_execution_start_time(t(10, 40, 0));
     let config = BacktestConfig {
@@ -622,7 +862,7 @@ fn engine_loads_distinct_decision_quote_times_on_same_day() {
         Ok(request
             .symbols
             .into_iter()
-            .map(|symbol| IntradayExecutionQuote {
+            .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                 date: request.date,
                 symbol,
                 timestamp: request.date.and_time(start_time) - Duration::seconds(1),

crates/fidc-core/tests/delisting.rs

@@ -24,6 +24,7 @@ impl Strategy for BuyThenHoldStrategy {
     ) -> Result<StrategyDecision, fidc_core::BacktestError> {
         if ctx.decision_date == d(2025, 1, 2) && ctx.portfolio.position("000001.SZ").is_none() {
             return Ok(StrategyDecision {
+                buy_denials: Default::default(),
                 rebalance: false,
                 target_weights: BTreeMap::new(),
                 exit_symbols: BTreeSet::new(),
@@ -70,7 +71,7 @@ fn engine_keeps_unresolved_delisted_position_without_fabricating_a_fill() {
         vec![
             DailyMarketSnapshot {
                 date: date1,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 timestamp: Some("2025-01-02 10:18:00".to_string()),
                 day_open: 10.0,
                 open: 10.0,
@@ -93,7 +94,7 @@ fn engine_keeps_unresolved_delisted_position_without_fabricating_a_fill() {
             },
             DailyMarketSnapshot {
                 date: date1,
-                symbol: "000002.SZ".to_string(),
+                symbol: "000002.SZ".into(),
                 timestamp: Some("2025-01-02 10:18:00".to_string()),
                 day_open: 5.0,
                 open: 5.0,
@@ -116,7 +117,7 @@ fn engine_keeps_unresolved_delisted_position_without_fabricating_a_fill() {
             },
             DailyMarketSnapshot {
                 date: delist_date,
-                symbol: "000002.SZ".to_string(),
+                symbol: "000002.SZ".into(),
                 timestamp: Some("2025-01-03 10:18:00".to_string()),
                 day_open: 5.05,
                 open: 5.05,
@@ -139,7 +140,7 @@ fn engine_keeps_unresolved_delisted_position_without_fabricating_a_fill() {
             },
             DailyMarketSnapshot {
                 date: date2,
-                symbol: "000002.SZ".to_string(),
+                symbol: "000002.SZ".into(),
                 timestamp: Some("2025-01-06 10:18:00".to_string()),
                 day_open: 5.1,
                 open: 5.1,
@@ -164,49 +165,53 @@ fn engine_keeps_unresolved_delisted_position_without_fabricating_a_fill() {
         vec![
             DailyFactorSnapshot {
                 date: date1,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 market_cap_bn: 20.0,
                 free_float_cap_bn: 18.0,
                 pe_ttm: 10.0,
                 turnover_ratio: Some(1.0),
                 effective_turnover_ratio: Some(1.0),
-                extra_factors: BTreeMap::new(),
+                adjustment_factor_backward1: None,
+                extra_factors: Default::default(),
             },
             DailyFactorSnapshot {
                 date: date1,
-                symbol: "000002.SZ".to_string(),
+                symbol: "000002.SZ".into(),
                 market_cap_bn: 30.0,
                 free_float_cap_bn: 28.0,
                 pe_ttm: 10.0,
                 turnover_ratio: Some(1.0),
                 effective_turnover_ratio: Some(1.0),
-                extra_factors: BTreeMap::new(),
+                adjustment_factor_backward1: None,
+                extra_factors: Default::default(),
             },
             DailyFactorSnapshot {
                 date: delist_date,
-                symbol: "000002.SZ".to_string(),
+                symbol: "000002.SZ".into(),
                 market_cap_bn: 30.5,
                 free_float_cap_bn: 28.5,
                 pe_ttm: 10.0,
                 turnover_ratio: Some(1.0),
                 effective_turnover_ratio: Some(1.0),
-                extra_factors: BTreeMap::new(),
+                adjustment_factor_backward1: None,
+                extra_factors: Default::default(),
             },
             DailyFactorSnapshot {
                 date: date2,
-                symbol: "000002.SZ".to_string(),
+                symbol: "000002.SZ".into(),
                 market_cap_bn: 31.0,
                 free_float_cap_bn: 29.0,
                 pe_ttm: 10.0,
                 turnover_ratio: Some(1.0),
                 effective_turnover_ratio: Some(1.0),
-                extra_factors: BTreeMap::new(),
+                adjustment_factor_backward1: None,
+                extra_factors: Default::default(),
             },
         ],
         vec![
             CandidateEligibility {
                 date: date1,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,
@@ -219,7 +224,7 @@ fn engine_keeps_unresolved_delisted_position_without_fabricating_a_fill() {
             },
             CandidateEligibility {
                 date: date1,
-                symbol: "000002.SZ".to_string(),
+                symbol: "000002.SZ".into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,
@@ -232,7 +237,7 @@ fn engine_keeps_unresolved_delisted_position_without_fabricating_a_fill() {
             },
             CandidateEligibility {
                 date: delist_date,
-                symbol: "000002.SZ".to_string(),
+                symbol: "000002.SZ".into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,
@@ -245,7 +250,7 @@ fn engine_keeps_unresolved_delisted_position_without_fabricating_a_fill() {
             },
             CandidateEligibility {
                 date: date2,
-                symbol: "000002.SZ".to_string(),
+                symbol: "000002.SZ".into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,
@@ -290,7 +295,7 @@ fn engine_keeps_unresolved_delisted_position_without_fabricating_a_fill() {
         ChinaAShareCostModel::default(),
         ChinaEquityRuleHooks::default(),
         PriceField::Open,
-    );
+    ).with_volume_capacity_mode(fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit);
     let mut engine = BacktestEngine::new(
         data,
         BuyThenHoldStrategy,
@@ -359,7 +364,7 @@ fn engine_applies_successor_conversion_before_unresolved_delisting_audit() {
         vec![
             DailyMarketSnapshot {
                 date: date1,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 timestamp: Some("2025-01-02 10:18:00".to_string()),
                 day_open: 10.0,
                 open: 10.0,
@@ -382,7 +387,7 @@ fn engine_applies_successor_conversion_before_unresolved_delisting_audit() {
             },
             DailyMarketSnapshot {
                 date: date1,
-                symbol: "000002.SZ".to_string(),
+                symbol: "000002.SZ".into(),
                 timestamp: Some("2025-01-02 10:18:00".to_string()),
                 day_open: 20.0,
                 open: 20.0,
@@ -405,7 +410,7 @@ fn engine_applies_successor_conversion_before_unresolved_delisting_audit() {
             },
             DailyMarketSnapshot {
                 date: date2,
-                symbol: "000002.SZ".to_string(),
+                symbol: "000002.SZ".into(),
                 timestamp: Some("2025-01-03 10:18:00".to_string()),
                 day_open: 21.0,
                 open: 21.0,
@@ -430,39 +435,42 @@ fn engine_applies_successor_conversion_before_unresolved_delisting_audit() {
         vec![
             DailyFactorSnapshot {
                 date: date1,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 market_cap_bn: 20.0,
                 free_float_cap_bn: 18.0,
                 pe_ttm: 10.0,
                 turnover_ratio: Some(1.0),
                 effective_turnover_ratio: Some(1.0),
-                extra_factors: BTreeMap::new(),
+                adjustment_factor_backward1: None,
+                extra_factors: Default::default(),
             },
             DailyFactorSnapshot {
                 date: date1,
-                symbol: "000002.SZ".to_string(),
+                symbol: "000002.SZ".into(),
                 market_cap_bn: 30.0,
                 free_float_cap_bn: 28.0,
                 pe_ttm: 10.0,
                 turnover_ratio: Some(1.0),
                 effective_turnover_ratio: Some(1.0),
-                extra_factors: BTreeMap::new(),
+                adjustment_factor_backward1: None,
+                extra_factors: Default::default(),
             },
             DailyFactorSnapshot {
                 date: date2,
-                symbol: "000002.SZ".to_string(),
+                symbol: "000002.SZ".into(),
                 market_cap_bn: 31.0,
                 free_float_cap_bn: 29.0,
                 pe_ttm: 10.0,
                 turnover_ratio: Some(1.0),
                 effective_turnover_ratio: Some(1.0),
-                extra_factors: BTreeMap::new(),
+                adjustment_factor_backward1: None,
+                extra_factors: Default::default(),
             },
         ],
         vec![
             CandidateEligibility {
                 date: date1,
-                symbol: "000001.SZ".to_string(),
+                symbol: "000001.SZ".into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,
@@ -475,7 +483,7 @@ fn engine_applies_successor_conversion_before_unresolved_delisting_audit() {
             },
             CandidateEligibility {
                 date: date1,
-                symbol: "000002.SZ".to_string(),
+                symbol: "000002.SZ".into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,
@@ -488,7 +496,7 @@ fn engine_applies_successor_conversion_before_unresolved_delisting_audit() {
             },
             CandidateEligibility {
                 date: date2,
-                symbol: "000002.SZ".to_string(),
+                symbol: "000002.SZ".into(),
                 is_st: false,
                 is_star_st: false,
                 is_new_listing: false,
@@ -540,7 +548,7 @@ fn engine_applies_successor_conversion_before_unresolved_delisting_audit() {
         ChinaAShareCostModel::default(),
         ChinaEquityRuleHooks::default(),
         PriceField::Open,
-    );
+    ).with_volume_capacity_mode(fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit);
     let mut engine = BacktestEngine::new(
         data,
         BuyThenHoldStrategy,

crates/fidc-core/tests/dividend_reinvestment_contract.rs

@@ -0,0 +1,475 @@
+use chrono::{NaiveDate, NaiveTime};
+use fidc_core::{
+    BacktestConfig, BacktestEngine, BrokerSimulator, ChinaAShareCostModel, ChinaEquityRuleHooks,
+    DataSet, MatchingType, OrderIntent, PriceField, Strategy, StrategyContext, StrategyDecision,
+};
+use std::{cell::RefCell, collections::BTreeSet, rc::Rc};
+
+const SYMBOL: &str = "000001.SZ";
+fn day(value: u32) -> NaiveDate {
+    NaiveDate::from_ymd_opt(2026, 9, value).unwrap()
+}
+
+fn data() -> DataSet {
+    let days = [11, 14, 15].map(day);
+    DataSet::from_components_with_actions_and_quotes(
+        vec![fidc_core::Instrument {
+            symbol: SYMBOL.into(),
+            name: "fixture".into(),
+            board: "SZ".into(),
+            round_lot: 100,
+            listed_at: Some(day(1)),
+            delisted_at: None,
+            status: "active".into(),
+        }],
+        days.iter()
+            .map(|&date| {
+                let price = if date == day(11) { 10. } else { 8.95 };
+                fidc_core::DailyMarketSnapshot {
+                    date,
+                    symbol: SYMBOL.into(),
+                    timestamp: Some(format!("{date} 15:00:00")),
+                    day_open: price,
+                    open: price,
+                    high: price,
+                    low: price,
+                    close: price,
+                    last_price: price,
+                    bid1: price,
+                    ask1: price,
+                    prev_close: price,
+                    volume: 100000,
+                    minute_volume: 100000,
+                    bid1_volume: 100000,
+                    ask1_volume: 100000,
+                    trading_phase: Some("continuous".into()),
+                    paused: false,
+                    upper_limit: price * 1.1,
+                    lower_limit: price * 0.9,
+                    price_tick: 0.01,
+                }
+            })
+            .collect(),
+        days.iter()
+            .map(|&date| fidc_core::DailyFactorSnapshot {
+                date,
+                symbol: SYMBOL.into(),
+                market_cap_bn: 10.,
+                free_float_cap_bn: 10.,
+                pe_ttm: 10.,
+                turnover_ratio: None,
+                effective_turnover_ratio: None,
+                adjustment_factor_backward1: Some(1.),
+                extra_factors: Default::default(),
+            })
+            .collect(),
+        days.iter()
+            .map(|&date| fidc_core::CandidateEligibility {
+                date,
+                symbol: SYMBOL.into(),
+                is_st: false,
+                is_star_st: false,
+                is_new_listing: false,
+                is_paused: false,
+                allow_buy: true,
+                allow_sell: true,
+                is_kcb: false,
+                is_one_yuan: false,
+                risk_level_code: None,
+            })
+            .collect(),
+        days.iter()
+            .map(|&date| fidc_core::BenchmarkSnapshot {
+                date,
+                benchmark: "000300.SH".into(),
+                open: 100.,
+                close: 100.,
+                prev_close: 100.,
+                volume: 100000,
+            })
+            .collect(),
+        vec![fidc_core::CorporateAction {
+            date: day(14),
+            symbol: SYMBOL.into(),
+            payable_date: Some(day(14)),
+            share_cash: 1.05,
+            share_bonus: 0.,
+            share_gift: 0.,
+            issue_quantity: 0.,
+            issue_price: 0.,
+            reform: false,
+            adjust_factor: None,
+            successor_symbol: None,
+            successor_ratio: None,
+            successor_cash: None,
+        }],
+        [(9, 15), (9, 31)]
+            .into_iter()
+            .map(|(hour, minute)| fidc_core::IntradayExecutionQuote {
+                observation_kind: fidc_core::data::QuoteObservationKind::MinuteBar,
+                date: day(14),
+                symbol: SYMBOL.into(),
+                timestamp: day(14).and_hms_opt(hour, minute, 0).unwrap(),
+                last_price: 8.95,
+                bid1: 8.95,
+                ask1: 8.95,
+                bid1_volume: 100000,
+                ask1_volume: 100000,
+                volume_delta: 10000,
+                amount_delta: 89500.,
+                trading_phase: Some("continuous".into()),
+            })
+            .collect(),
+    )
+    .unwrap()
+}
+
+struct Hold {
+    seen: Rc<RefCell<Vec<(NaiveTime, u32)>>>,
+}
+impl Strategy for Hold {
+    fn name(&self) -> &str {
+        "accounting reinvestment contract"
+    }
+    fn initial_subscriptions(&self) -> BTreeSet<String> {
+        [SYMBOL.into()].into()
+    }
+    fn on_day(
+        &mut self,
+        ctx: &StrategyContext<'_>,
+    ) -> Result<StrategyDecision, fidc_core::BacktestError> {
+        Ok(if ctx.execution_date == day(11) {
+            StrategyDecision {
+                order_intents: vec![OrderIntent::Shares {
+                    symbol: SYMBOL.into(),
+                    quantity: 1000,
+                    reason: "initial".into(),
+                }],
+                ..Default::default()
+            }
+        } else {
+            StrategyDecision::default()
+        })
+    }
+    fn on_minute(
+        &mut self,
+        ctx: &StrategyContext<'_>,
+        _: &fidc_core::IntradayExecutionQuote,
+    ) -> Result<StrategyDecision, fidc_core::BacktestError> {
+        self.seen.borrow_mut().push((
+            ctx.current_time().unwrap(),
+            ctx.portfolio
+                .position(SYMBOL)
+                .map_or(0, |position| position.quantity),
+        ));
+        Ok(Default::default())
+    }
+}
+
+fn engine() -> BacktestEngine<Hold, ChinaAShareCostModel, ChinaEquityRuleHooks> {
+    BacktestEngine::new(
+        data(),
+        Hold {
+            seen: Rc::new(RefCell::new(Vec::new())),
+        },
+        BrokerSimulator::new_with_execution_price(
+            ChinaAShareCostModel::default()
+                .with_commission_rate(0.0008)
+                .with_minimum_commission(0.),
+            ChinaEquityRuleHooks,
+            PriceField::Open,
+        )
+        .with_matching_type(MatchingType::NextBarOpen)
+        .with_volume_limit(false)
+        .with_liquidity_limit(false),
+        BacktestConfig {
+            initial_cash: 50000.,
+            benchmark_code: "000300.SH".into(),
+            start_date: Some(day(11)),
+            end_date: Some(day(15)),
+            decision_lag_trading_days: 0,
+            execution_price_field: PriceField::Open,
+        },
+    )
+    .with_dividend_reinvestment(true)
+}
+
+#[test]
+fn accounting_reinvestment_has_an_explicit_origin_clock_and_progress_delivery() {
+    let mut progress = Vec::new();
+    let result = engine()
+        .run_with_progress(|event| progress.push(event.clone()))
+        .unwrap();
+    let reinvest = result
+        .fills
+        .iter()
+        .find(|fill| fill.reason == "dividend_reinvestment")
+        .unwrap();
+    assert_eq!(
+        (
+            reinvest.quantity,
+            reinvest.price,
+            reinvest.commission,
+            reinvest.order_id
+        ),
+        (100, 8.95, 0., None)
+    );
+    assert_eq!(
+        serde_json::to_value(reinvest).unwrap()["origin"],
+        "dividend_reinvestment"
+    );
+    assert_eq!(reinvest.execution_timestamp, day(14).and_hms_opt(0, 0, 0));
+    let received = progress.iter().find(|event| event.date == day(14)).unwrap();
+    assert!(
+        received
+            .fills
+            .iter()
+            .any(|fill| fill.reason == "dividend_reinvestment")
+    );
+    assert_eq!(
+        progress
+            .iter()
+            .map(|event| event.daily_fill_count)
+            .sum::<usize>(),
+        result.fills.len()
+    );
+}
+
+fn manual_source(delayed: bool) -> fidc_core::manual_execution::ManualExecutionReplay {
+    let observed = if delayed {
+        "2026-09-14T01:15:00Z"
+    } else {
+        "2026-09-11T06:00:01Z"
+    };
+    let mut source: fidc_core::manual_execution::ManualExecutionReplay = serde_json::from_value(serde_json::json!({
+        "schema":fidc_core::manual_execution::MANUAL_REPLAY_SCHEMA,"runtimeId":"r","accountId":"a","sourceContractSha256":"a".repeat(64),"contentSha256":"",
+        "observationCutoff":"2026-09-15T08:00:00Z","actions":[{"actionId":"manual","source":"manual_security_trade","auditEventIds":["audit"],
+            "confirmedAt":"2026-09-11T05:59:59Z","confirmationObservedAt":"2026-09-11T05:59:59Z","outcome":"orders_terminal","orders":[{
+                "orderId":"manual-order","sourceAdapter":"paper","symbol":SYMBOL,"side":"Buy","quantity":1000,
+                "orderCreatedAt":"2026-09-11T05:59:59Z","terminalObservedAt":observed,"terminalStatus":"filled","fills":[{
+                    "tradeId":"manual-fill","observationEventId":"receipt","observationSequence":1,"feeObservationEventId":"receipt","feeObservationSequence":1,
+                    "feeObservedAt":observed,"tradeDate":"2026-09-11","executedAt":"2026-09-11T06:00:00Z","observedAt":observed,
+                    "timestampPrecision":"second","quantity":1000,"price":"10","totalFee":"1"
+                }]
+            }]}]
+    })).unwrap();
+    source.content_sha256 = source.content_digest().unwrap();
+    source
+}
+
+#[test]
+fn delayed_receipt_before_market_open_reconciles_accounting_not_future_market_fills() {
+    let timely = engine()
+        .with_observed_manual_executions(manual_source(false))
+        .unwrap()
+        .run()
+        .unwrap();
+    let delayed = engine()
+        .with_observed_manual_executions(manual_source(true))
+        .unwrap()
+        .run()
+        .unwrap();
+    assert_eq!(delayed.holdings_summary[0].quantity, 2200);
+    assert_eq!(
+        delayed.holdings_summary[0].quantity,
+        timely.holdings_summary[0].quantity
+    );
+    assert_eq!(
+        delayed.equity_curve.last().unwrap().cash,
+        timely.equity_curve.last().unwrap().cash
+    );
+    assert_eq!(
+        delayed.manual_executions[0]
+            .corporate_adjustment
+            .as_ref()
+            .unwrap()
+            .corporate_cash_delta,
+        "155"
+    );
+}
+
+#[test]
+fn weekend_receipts_and_morning_allocations_are_in_the_next_progress_batch() {
+    let mut source = manual_source(true);
+    let observed = "2026-09-12T02:00:00Z".parse().unwrap();
+    let order = &mut source.actions[0].orders[0];
+    order.terminal_observed_at = observed;
+    order.fills[0].observed_at = observed;
+    order.fills[0].fee_observed_at = observed;
+    source.content_sha256 = source.content_digest().unwrap();
+    let mut progress = Vec::new();
+    let result = engine()
+        .with_observed_manual_executions(source)
+        .unwrap()
+        .run_with_progress(|event| progress.push(event.clone()))
+        .unwrap();
+    let monday = progress.iter().find(|event| event.date == day(14)).unwrap();
+    assert_eq!(monday.daily_manual_fill_count, 1);
+    assert_eq!(monday.manual_executions[0].observed_at, observed);
+    assert!(
+        monday
+            .fills
+            .iter()
+            .any(|fill| fill.origin == fidc_core::FillOrigin::DividendReinvestment)
+    );
+    assert!(
+        monday
+            .process_events
+            .iter()
+            .any(|event| event.kind == fidc_core::ProcessEventKind::ManualExecutionObserved)
+    );
+    assert_eq!(
+        progress
+            .iter()
+            .map(|event| event.daily_fill_count)
+            .sum::<usize>(),
+        result.fills.len() + result.manual_executions.len()
+    );
+}
+
+fn exposure_event(id: &str, sequence: u64, at: &str, action: fidc_core::position_exposure::PositionExposureAction)
+    -> fidc_core::position_exposure::PositionExposureEvent {
+    fidc_core::position_exposure::PositionExposureEvent {
+        event_id: id.into(), sequence, effective_at: at.parse().unwrap(), allocation_weights_bps: None, action,
+    }
+}
+
+fn cleared_reinvestment_case(
+    events: Vec<fidc_core::position_exposure::PositionExposureEvent>,
+    legacy: std::collections::BTreeMap<NaiveDate, i32>,
+    extra_buy_delayed: Option<bool>,
+) -> fidc_core::BacktestResult {
+    let mut parts = data().snapshot_components();
+    parts.corporate_actions[0].payable_date = Some(day(15));
+    let data = DataSet::from_components_with_actions_and_quotes(parts.instruments, parts.market,
+        parts.factors, parts.candidates, parts.benchmarks, parts.corporate_actions, parts.execution_quotes).unwrap();
+    let mut source = manual_source(false);
+    let mut sale = source.actions[0].clone();
+    sale.action_id = "clear".into(); sale.audit_event_ids = vec!["clear-audit".into()];
+    sale.confirmed_at = "2026-09-14T05:59:59Z".parse().unwrap();
+    sale.confirmation_observed_at = sale.confirmed_at;
+    let order = &mut sale.orders[0];
+    order.order_id = "clear-order".into(); order.side = fidc_core::OrderSide::Sell;
+    order.order_created_at = sale.confirmed_at;
+    order.terminal_observed_at = "2026-09-14T06:00:01Z".parse().unwrap();
+    let fill = &mut order.fills[0];
+    fill.trade_id = "clear-fill".into(); fill.observation_event_id = "clear-receipt".into();
+    fill.observation_sequence = 2; fill.fee_observation_event_id = "clear-receipt".into();
+    fill.fee_observation_sequence = 2; fill.trade_date = day(14);
+    fill.executed_at = "2026-09-14T06:00:00Z".parse().unwrap();
+    fill.observed_at = order.terminal_observed_at; fill.fee_observed_at = order.terminal_observed_at;
+    fill.price = "8.95".parse().unwrap();
+    source.actions.push(sale);
+    if let Some(delayed) = extra_buy_delayed {
+        let mut extra = source.actions[0].clone();
+        extra.action_id = "extra".into(); extra.audit_event_ids = vec!["extra-audit".into()];
+        extra.confirmed_at = "2026-09-11T06:00:59Z".parse().unwrap();
+        extra.confirmation_observed_at = extra.confirmed_at;
+        let order = &mut extra.orders[0];
+        order.order_id = "extra-order".into(); order.order_created_at = extra.confirmed_at;
+        order.terminal_observed_at = if delayed { "2026-09-15T01:15:00Z" } else { "2026-09-11T06:01:01Z" }.parse().unwrap();
+        let fill = &mut order.fills[0];
+        fill.trade_id = "extra-fill".into(); fill.observation_event_id = "extra-receipt".into();
+        fill.observation_sequence = if delayed { 3 } else { 2 };
+        fill.fee_observation_event_id = "extra-receipt".into(); fill.fee_observation_sequence = fill.observation_sequence;
+        fill.executed_at = "2026-09-11T06:01:00Z".parse().unwrap(); fill.observed_at = order.terminal_observed_at;
+        fill.fee_observed_at = order.terminal_observed_at;
+        if !delayed {
+            source.actions[1].orders[0].fills[0].observation_sequence = 3;
+            source.actions[1].orders[0].fills[0].fee_observation_sequence = 3;
+        }
+        source.actions.push(extra);
+    }
+    source.position_exposure_events = events;
+    source.legacy_position_exposure_bps = legacy;
+    source.content_sha256 = source.content_digest().unwrap();
+    let mut config = fidc_core::PlatformExprStrategyConfig::generic();
+    config.signal_symbol = SYMBOL.into(); config.benchmark_symbol = "000300.SH".into();
+    config.rotation_enabled = false; config.matching_type = MatchingType::CurrentBarClose;
+    BacktestEngine::new(data, fidc_core::PlatformExprStrategy::new(config),
+        BrokerSimulator::new(ChinaAShareCostModel::default(), ChinaEquityRuleHooks)
+            .with_matching_type(MatchingType::CurrentBarClose).with_volume_limit(false).with_liquidity_limit(false),
+        BacktestConfig { initial_cash: 50000., benchmark_code: "000300.SH".into(), start_date: Some(day(11)),
+            end_date: Some(day(15)), decision_lag_trading_days: 0, execution_price_field: PriceField::Close })
+        .with_dividend_reinvestment(true).with_observed_manual_executions(source).unwrap().run().unwrap()
+}
+
+#[test]
+fn an_effective_manual_zero_must_not_recreate_a_cleared_position_on_dividend_payment() {
+    use fidc_core::position_exposure::PositionExposureAction as Action;
+    let zero = exposure_event("zero", 1, "2026-09-14T07:00:00Z", Action::Set { target_exposure_bps: 0 });
+    let result = cleared_reinvestment_case(vec![zero], Default::default(), None);
+    assert!(result.fills.is_empty(), "{:?}", result.fills);
+    assert!(result.holdings_summary.is_empty());
+    assert_eq!(result.equity_curve.last().unwrap().cash, 49998.);
+    assert!(result.equity_curve.last().unwrap().notes.contains("runtime_zero_exposure"));
+}
+
+#[test]
+fn a_clear_without_a_manual_zero_keeps_the_declared_legacy_reinvestment_model() {
+    let result = cleared_reinvestment_case(vec![], Default::default(), None);
+    assert_eq!(result.fills.len(), 1);
+    assert_eq!((result.fills[0].quantity, result.fills[0].price, result.fills[0].commission), (100, 8.95, 0.));
+    assert_eq!(result.fills[0].gross_amount, 895.);
+    assert_eq!(result.fills[0].net_cash_flow, -895.);
+    assert!(result.order_events.is_empty());
+}
+
+#[test]
+fn reinvestment_respects_zero_restore_same_instant_sequence_and_legacy_granularity() {
+    use fidc_core::position_exposure::PositionExposureAction as Action;
+    let before = "2026-09-14T07:00:00Z";
+    let settlement = "2026-09-14T16:00:00Z";
+    let later = "2026-09-15T01:31:00Z";
+    let zero = || exposure_event("zero", 1, before, Action::Scale { requested_bps: 0 });
+    let cases = vec![
+        (vec![zero()], Default::default(), false),
+        (vec![exposure_event("zero-at-settlement", 1, settlement, Action::Set { target_exposure_bps: 0 })], Default::default(), false),
+        (vec![exposure_event("later-zero", 1, later, Action::Set { target_exposure_bps: 0 })], Default::default(), true),
+        (vec![zero(), exposure_event("restore", 2, before, Action::Restore)], Default::default(), true),
+        (vec![exposure_event("restore", 1, before, Action::Restore), exposure_event("last-zero", 2, before, Action::Set { target_exposure_bps: 0 })], Default::default(), false),
+        (vec![exposure_event("restore", 2, before, Action::Restore), zero()], Default::default(), true),
+        (vec![zero(), exposure_event("later-restore", 2, later, Action::Restore)], Default::default(), false),
+        (vec![], std::collections::BTreeMap::from([(day(14), 0)]), false),
+        (vec![exposure_event("restore-legacy", 1, before, Action::Restore)], std::collections::BTreeMap::from([(day(14), 0)]), true),
+        (vec![exposure_event("positive", 1, before, Action::Set { target_exposure_bps: 3000 })], Default::default(), true),
+    ];
+    for (events, legacy, allowed) in cases {
+        let result = cleared_reinvestment_case(events, legacy, None);
+        assert_eq!(result.fills.len(), usize::from(allowed));
+        assert_eq!(result.equity_curve.last().unwrap().cash, if allowed { 49103. } else { 49998. });
+        assert_eq!(result.holdings_summary.iter().map(|holding| holding.quantity).sum::<u32>(), if allowed {100} else {0});
+        assert!(result.order_events.is_empty());
+    }
+}
+
+#[test]
+fn an_explicit_zero_member_weight_or_omission_blocks_only_that_reinvestment() {
+    use fidc_core::position_exposure::PositionExposureAction as Action;
+    for included in [false, true] {
+        for weight in [0, 10000] {
+            let mut event = exposure_event("allocation", 1, "2026-09-14T07:00:00Z", Action::Set { target_exposure_bps: 5000 });
+            let mut weights = std::collections::BTreeMap::from([("000002.SZ".into(), if included {10000-weight} else {10000})]);
+            if included { weights.insert(SYMBOL.into(), weight); }
+            event.allocation_weights_bps = Some(weights);
+            let allowed = included && weight > 0;
+            let result = cleared_reinvestment_case(vec![event], Default::default(), None);
+            assert_eq!(result.fills.len(), usize::from(allowed));
+            if !allowed { assert!(result.equity_curve.last().unwrap().notes.contains("runtime_zero_allocation")); }
+        }
+    }
+}
+
+#[test]
+fn late_corporate_replay_uses_the_same_zero_policy_and_retains_actual_manual_shares() {
+    use fidc_core::position_exposure::PositionExposureAction as Action;
+    let event = exposure_event("zero", 1, "2026-09-14T07:00:00Z", Action::Set { target_exposure_bps: 0 });
+    let timely = cleared_reinvestment_case(vec![event.clone()], Default::default(), Some(false));
+    let late = cleared_reinvestment_case(vec![event], Default::default(), Some(true));
+    assert!(timely.fills.is_empty()); assert!(late.fills.is_empty());
+    assert_eq!(timely.equity_curve.last().unwrap().cash, 41047.);
+    assert_eq!(late.equity_curve.last().unwrap().cash, timely.equity_curve.last().unwrap().cash);
+    assert_eq!(late.holdings_summary[0].quantity, 1000);
+    assert_eq!(late.holdings_summary[0].quantity, timely.holdings_summary[0].quantity);
+    assert_eq!(late.manual_executions.last().unwrap().corporate_adjustment.as_ref().unwrap().corporate_cash_delta, "1050");
+}

crates/fidc-core/tests/fixtures/stock_pool_disabled_stops_compiled.json

@@ -0,0 +1,275 @@
+{
+  "strategyId": "fixture_hold_without_stops_backtest",
+  "version": "1.0.0",
+  "market": "CN_A",
+  "benchmark": {
+    "instrumentId": "000300.SH",
+    "fallbackInstrumentId": "000300.SH",
+    "note": "必须使用真实指数链路；若 000852.SH 不可用，应直接报错而不是退化到其他标的。"
+  },
+  "universe": {
+    "exclude": [],
+    "implementationNotes": [
+      "ST、停牌、退市、新股、科创、一元、涨跌停、同日卖出禁买、成交量和费用由 riskPolicy / RiskLimits 统一执行",
+      "上市日期与退市日期取自 instrument 结构化字段，不再使用股票名称做 ST/退市判断",
+      "盘中 current_price / last_price 由策略交易时刻批量 tick 查询驱动"
+    ],
+    "include": [
+      "000001.SZ",
+      "000002.SZ"
+    ]
+  },
+  "selectors": [
+    {
+      "type": "dynamicRange",
+      "field": "market_cap",
+      "lowerExpr": "0",
+      "upperExpr": "1000000000000",
+      "mapping": "close -> strategy_factory_source_lake.runtime_fields.close"
+    },
+    {
+      "type": "filter",
+      "expr": "(close > 0)"
+    },
+    {
+      "type": "rank",
+      "orderBy": [
+        "market_cap asc"
+      ],
+      "limitExpr": "2"
+    }
+  ],
+  "rebalance": {
+    "frequencyDays": 1,
+    "tradeTimes": [],
+    "dailyApproximation": "日线回测按 matching_type 撮合；分钟线回测按交易时刻分钟价格撮合",
+    "schedule": {
+      "frequency": "daily"
+    }
+  },
+  "risk": {
+    "takeProfitExpr": "",
+    "stopLossExpr": "",
+    "indexThrottleExpr": "max(0.0, 1.0000000000 - 0.0000 / max(total_equity, 1.0))",
+    "stopTakeReferencePriceMode": "position_average_entry_price"
+  },
+  "seasonality": {
+    "skipWindows": []
+  },
+  "execution": {
+    "selectionGranularity": "strategy_factory_source_lake.daily_source_rows_v1",
+    "executionGranularity": "daily_or_minute_bar",
+    "priceSource": "current_bar_close_or_next_bar_open_or_minute_bar",
+    "matchingType": "current_bar_close",
+    "rebalanceCashMode": "sell_then_buy",
+    "slippageModel": "none",
+    "slippageValue": 0,
+    "riskPolicy": {
+      "rejectStSelection": false,
+      "rejectStarStSelection": false,
+      "rejectPausedSelection": false,
+      "rejectInactiveSelection": false,
+      "rejectNewListingSelection": false,
+      "rejectKcbSelection": false,
+      "rejectBjseSelection": false,
+      "rejectOneYuanSelection": false,
+      "rejectUpperLimitSelection": false,
+      "rejectLowerLimitSelection": false,
+      "rejectStBuy": true,
+      "rejectStarStBuy": true,
+      "rejectPausedBuy": true,
+      "rejectInactiveBuy": true,
+      "rejectNewListingBuy": true,
+      "rejectKcbBuy": true,
+      "rejectBjseBuy": true,
+      "rejectOneYuanBuy": true,
+      "rejectUpperLimitBuy": true,
+      "rejectPausedSell": true,
+      "rejectInactiveSell": true,
+      "rejectLowerLimitSell": true,
+      "respectAllowBuySell": true,
+      "forbidSameDayRebuyAfterSell": true,
+      "blacklistEnabled": true,
+      "blacklistedSymbols": [],
+      "allowMarketOrders": true,
+      "liveTradingEnabled": false,
+      "volumeLimitEnabled": true,
+      "liquidityLimitEnabled": true,
+      "volumePercent": 0.25,
+      "maxOrderQuantity": 1000000,
+      "maxOrderNotional": 100000000,
+      "maxSymbolPosition": 10000000,
+      "commissionRate": 0.0003,
+      "minimumCommission": 5,
+      "stampTaxRateBeforeChange": 0.001,
+      "stampTaxRateAfterChange": 0.0005,
+      "stampTaxChangeDate": "2023-08-28"
+    },
+    "sourceLanguage": "engine-script",
+    "sourceKind": "platform-strategy",
+    "extractor": "omniquant-engine-script-v2",
+    "sellThenBuyDelaySlippageRate": 0,
+    "strictValueBudget": true
+  },
+  "factorRefs": [
+    "close"
+  ],
+  "runtimeExpressions": {
+    "prelude": "",
+    "schedule": {
+      "frequency": "daily"
+    },
+    "selection": {
+      "limitExpr": "2",
+      "candidateLimitExpr": "2",
+      "marketCapField": "close",
+      "marketCapLowerExpr": "0",
+      "marketCapUpperExpr": "1000000000000",
+      "stockFilterExpr": "(close > 0)"
+    },
+    "risk": {
+      "exposureExpr": "max(0.0, 1.0000000000 - 0.0000 / max(total_equity, 1.0))",
+      "stopLossExpr": "",
+      "takeProfitExpr": "",
+      "stopTakeReferencePriceMode": "position_average_entry_price"
+    },
+    "allocation": {
+      "buyScaleExpr": "1.0"
+    },
+    "ordering": {
+      "rankBy": "market_cap",
+      "rankExpr": "(symbol == \"000001.SZ\" || symbol == \"000002.SZ\") ? (symbol == \"000001.SZ\" ? (0) : (1)) : 2",
+      "rankOrder": "asc"
+    },
+    "trading": {
+      "rotationEnabled": true,
+      "subscriptionGuardRequired": false,
+      "stage": "on_day",
+      "actions": []
+    }
+  },
+  "engineConfig": {
+    "templateId": "fixture_hold_without_stops_backtest",
+    "benchmarkSymbol": "000300.SH",
+    "signalSymbol": "000300.SH",
+    "rankLimit": 2,
+    "refreshRate": 1,
+    "rsiRate": 1.0001,
+    "dynamicRange": {
+      "baseIndexLevel": 2000,
+      "baseCapFloor": 7,
+      "capSpan": 1000000000000,
+      "xs": 0.008
+    },
+    "stopLossMultiplier": null,
+    "takeProfitMultiplier": null,
+    "matchingType": "current_bar_close",
+    "rebalanceCashMode": "sell_then_buy",
+    "slippageModel": "none",
+    "slippageValue": 0,
+    "riskPolicy": {
+      "rejectStSelection": false,
+      "rejectStarStSelection": false,
+      "rejectPausedSelection": false,
+      "rejectInactiveSelection": false,
+      "rejectNewListingSelection": false,
+      "rejectKcbSelection": false,
+      "rejectBjseSelection": false,
+      "rejectOneYuanSelection": false,
+      "rejectUpperLimitSelection": false,
+      "rejectLowerLimitSelection": false,
+      "rejectStBuy": true,
+      "rejectStarStBuy": true,
+      "rejectPausedBuy": true,
+      "rejectInactiveBuy": true,
+      "rejectNewListingBuy": true,
+      "rejectKcbBuy": true,
+      "rejectBjseBuy": true,
+      "rejectOneYuanBuy": true,
+      "rejectUpperLimitBuy": true,
+      "rejectPausedSell": true,
+      "rejectInactiveSell": true,
+      "rejectLowerLimitSell": true,
+      "respectAllowBuySell": true,
+      "forbidSameDayRebuyAfterSell": true,
+      "blacklistEnabled": true,
+      "blacklistedSymbols": [],
+      "allowMarketOrders": true,
+      "liveTradingEnabled": false,
+      "volumeLimitEnabled": true,
+      "liquidityLimitEnabled": true,
+      "volumePercent": 0.25,
+      "maxOrderQuantity": 1000000,
+      "maxOrderNotional": 100000000,
+      "maxSymbolPosition": 10000000,
+      "commissionRate": 0.0003,
+      "minimumCommission": 5,
+      "stampTaxRateBeforeChange": 0.001,
+      "stampTaxRateAfterChange": 0.0005,
+      "stampTaxChangeDate": "2023-08-28"
+    },
+    "skipWindows": [],
+    "rebalanceSchedule": {
+      "frequency": "daily"
+    },
+    "dividendReinvestment": false,
+    "sellThenBuyDelaySlippageRate": 0,
+    "strictValueBudget": true
+  },
+  "stockPool": {
+    "schema_version": 1,
+    "pool_id": "fixture-pool",
+    "version_id": "fixture-version",
+    "members": [
+      {
+        "symbol": "000001.SZ",
+        "requested_order": 0,
+        "recommendation_reason": "",
+        "target_weight_bps": null,
+        "stop_loss": null,
+        "take_profit": null
+      },
+      {
+        "symbol": "000002.SZ",
+        "requested_order": 1,
+        "recommendation_reason": "",
+        "target_weight_bps": null,
+        "stop_loss": null,
+        "take_profit": null
+      }
+    ],
+    "allocation_policy": {
+      "target_holding_count": 2,
+      "portfolio_policy": {
+        "schema_version": 1,
+        "membership": "retain_holdings",
+        "rebalance_weights": false
+      },
+      "invest_ratio_bps": 10000,
+      "reserve_cash": 0
+    },
+    "timing_policy": {
+      "schema_version": 1,
+      "auto_execute": true,
+      "freeze_time": "00:00",
+      "window_start": "09:30",
+      "window_end": "15:00",
+      "trigger_mode": "scheduled_bar",
+      "pricing_mode": "first_tick",
+      "automatic_trade_protection": {
+        "buy_protection_days": 0,
+        "sell_cooldown_days": 0,
+        "max_holding_days": 0,
+        "locks": []
+      }
+    },
+    "stop_take_policy": {
+      "stop_loss": null,
+      "take_profit": null
+    },
+    "out_of_pool_policy": "hold"
+  },
+  "signalSymbol": "000300.SH",
+  "sourceCode": "strategy(\"fixture_hold_without_stops_backtest\") {\n  mode(\"rotation\")\n  market(\"CN_A\")\n  benchmark(\"000300.SH\")\n  signal(\"000300.SH\")\n  rebalance.every_days(1)\n  universe.include([\"000001.SZ\", \"000002.SZ\"])\n  selection.limit(2)\n  selection.candidate_limit(2)\n  selection.market_cap_band(field=\"close\", lower=0, upper=1000000000000)\n  filter.stock_expr(close > 0)\n  ordering.rank_expr((symbol == \"000001.SZ\" || symbol == \"000002.SZ\") ? (symbol == \"000001.SZ\" ? (0) : (1)) : 2, \"asc\")\n  risk.index_exposure(max(0.0, 1.0000000000 - 0.0000 / max(total_equity, 1.0)))\n  allocation.buy_scale(1.0)\n  stock_pool.config({\"schema_version\":1,\"pool_id\":\"fixture-pool\",\"version_id\":\"fixture-version\",\"members\":[{\"symbol\":\"000001.SZ\",\"requested_order\":0,\"recommendation_reason\":\"\",\"target_weight_bps\":null,\"stop_loss\":null,\"take_profit\":null},{\"symbol\":\"000002.SZ\",\"requested_order\":1,\"recommendation_reason\":\"\",\"target_weight_bps\":null,\"stop_loss\":null,\"take_profit\":null}],\"allocation_policy\":{\"target_holding_count\":2,\"portfolio_policy\":{\"schema_version\":1,\"membership\":\"retain_holdings\",\"rebalance_weights\":false},\"invest_ratio_bps\":10000,\"reserve_cash\":0},\"timing_policy\":{\"schema_version\":1,\"auto_execute\":true,\"freeze_time\":\"00:00\",\"window_start\":\"09:30\",\"window_end\":\"15:00\",\"trigger_mode\":\"scheduled_bar\",\"pricing_mode\":\"first_tick\",\"automatic_trade_protection\":{\"buy_protection_days\":0,\"sell_cooldown_days\":0,\"max_holding_days\":0,\"locks\":[]}},\"stop_take_policy\":{\"stop_loss\":null,\"take_profit\":null},\"out_of_pool_policy\":\"hold\"})\n  risk.reference_price_mode(\"position_average_entry_price\")\n  execution.matching_type(\"current_bar_close\")\n}\n",
+  "mode": "rotation"
+}

crates/fidc-core/tests/intraday_history_performance.rs

@@ -17,7 +17,7 @@ fn dataset(day_count: usize, bars_per_day: usize) -> (DataSet, Vec<NaiveDate>) {
         .iter()
         .map(|date| DailyMarketSnapshot {
             date: *date,
-            symbol: SYMBOL.to_string(),
+            symbol: SYMBOL.into(),
             timestamp: None,
             day_open: 10.0,
             open: 10.0,
@@ -52,12 +52,10 @@ fn dataset(day_count: usize, bars_per_day: usize) -> (DataSet, Vec<NaiveDate>) {
         .collect::<Vec<_>>();
     let mut quotes = Vec::with_capacity(day_count * bars_per_day);
     for date in &dates {
-        let session_start = date
-            .and_hms_opt(9, 30, 0)
-            .expect("valid session start");
+        let session_start = date.and_hms_opt(9, 30, 0).expect("valid session start");
         for offset in 0..bars_per_day {
             let timestamp = session_start + Duration::minutes(offset as i64);
-            quotes.push(IntradayExecutionQuote {
+            quotes.push(IntradayExecutionQuote { observation_kind: Default::default(),
                 date: *date,
                 symbol: SYMBOL.to_string(),
                 timestamp,

crates/fidc-core/tests/manual_corporate_observation.rs

@@ -0,0 +1,734 @@
+use chrono::{DateTime, NaiveDate, Utc};
+use fidc_core::manual_execution::{MANUAL_REPLAY_SCHEMA, ManualExecutionReplay};
+use fidc_core::{
+    BacktestConfig, BacktestEngine, BenchmarkSnapshot, BrokerSimulator, CandidateEligibility,
+    ChinaAShareCostModel, ChinaEquityRuleHooks, CorporateAction, DailyFactorSnapshot,
+    DailyMarketSnapshot, DataSet, Instrument, MatchingType, PriceField, Strategy,
+};
+
+fn date(day: u32) -> NaiveDate {
+    NaiveDate::from_ymd_opt(2026, 9, day).unwrap()
+}
+
+#[derive(Clone, Copy, Debug)]
+enum Action {
+    Split,
+    Dividend,
+    Successor,
+}
+
+fn data(action: Action) -> DataSet {
+    data_with_successor_metadata(action, true)
+}
+
+fn data_with_successor_metadata(action: Action, include_successor: bool) -> DataSet {
+    let days = [10, 11, 14, 15].map(date);
+    let mut market = Vec::new();
+    let mut factors = Vec::new();
+    let mut candidates = Vec::new();
+    for day in days {
+        for symbol in ["000001.SZ", "000002.SZ"] {
+            if matches!(action, Action::Successor) && symbol == "000001.SZ" && day >= date(14) {
+                continue;
+            }
+            let price = if day < date(14)
+                || (symbol == "000002.SZ" && !matches!(action, Action::Successor))
+            {
+                10.
+            } else if matches!(action, Action::Dividend) {
+                9.
+            } else {
+                5.
+            };
+            market.push(DailyMarketSnapshot {
+                date: day,
+                symbol: symbol.into(),
+                timestamp: Some(format!("{day} 15:00:00")),
+                day_open: price,
+                open: price,
+                high: price,
+                low: price,
+                close: price,
+                last_price: price,
+                bid1: price,
+                ask1: price,
+                prev_close: price,
+                volume: 100000,
+                minute_volume: 100000,
+                bid1_volume: 100000,
+                ask1_volume: 100000,
+                trading_phase: Some("continuous".into()),
+                paused: false,
+                upper_limit: price * 1.1,
+                lower_limit: price * 0.9,
+                price_tick: 0.01,
+            });
+            factors.push(DailyFactorSnapshot {
+                date: day,
+                symbol: symbol.into(),
+                market_cap_bn: 10.,
+                free_float_cap_bn: 10.,
+                pe_ttm: 10.,
+                turnover_ratio: None,
+                effective_turnover_ratio: None,
+                adjustment_factor_backward1: Some(1.),
+                extra_factors: Default::default(),
+            });
+            candidates.push(CandidateEligibility {
+                date: day,
+                symbol: symbol.into(),
+                is_st: false,
+                is_star_st: false,
+                is_new_listing: false,
+                is_paused: false,
+                allow_buy: true,
+                allow_sell: true,
+                is_kcb: false,
+                is_one_yuan: false,
+                risk_level_code: None,
+            });
+        }
+    }
+    DataSet::from_components_with_actions(
+        ["000001.SZ", "000002.SZ"]
+            .into_iter()
+            .filter(|symbol| include_successor || *symbol != "000002.SZ")
+            .map(|symbol| Instrument {
+                symbol: symbol.into(),
+                name: symbol.into(),
+                board: "SZ".into(),
+                round_lot: 100,
+                listed_at: Some(date(1)),
+                delisted_at: (matches!(action, Action::Successor) && symbol == "000001.SZ")
+                    .then_some(date(14)),
+                status: "active".into(),
+            })
+            .collect(),
+        market,
+        factors,
+        candidates,
+        days.map(|day| BenchmarkSnapshot {
+            date: day,
+            benchmark: "000300.SH".into(),
+            open: 100.,
+            close: 100.,
+            prev_close: 100.,
+            volume: 100000,
+        })
+        .into(),
+        vec![CorporateAction {
+            date: date(14),
+            symbol: "000001.SZ".into(),
+            payable_date: Some(date(14)),
+            share_cash: if matches!(action, Action::Dividend) {
+                1.
+            } else {
+                0.
+            },
+            share_bonus: if matches!(action, Action::Split) {
+                1.
+            } else {
+                0.
+            },
+            share_gift: 0.,
+            issue_quantity: 0.,
+            issue_price: 0.,
+            reform: false,
+            adjust_factor: None,
+            successor_symbol: matches!(action, Action::Successor).then(|| "000002.SZ".into()),
+            successor_ratio: matches!(action, Action::Successor).then_some(2.),
+            successor_cash: matches!(action, Action::Successor).then_some(0.5),
+        }],
+    )
+    .unwrap()
+}
+
+fn source(delayed: bool, sell: bool) -> ManualExecutionReplay {
+    let trades = if sell {
+        vec![
+            ("initial-buy", "Buy", 10, 200, false),
+            ("sale", "Sell", 11, 100, delayed),
+        ]
+    } else {
+        vec![("buy", "Buy", 11, 100, delayed)]
+    };
+    let actions = trades.into_iter().enumerate().map(|(index, (id, side, day, quantity, late))| {
+        let executed = format!("2026-09-{day:02}T06:00:00Z").parse::<DateTime<Utc>>().unwrap();
+        let observed = if late { "2026-09-15T05:00:00Z".parse().unwrap() } else { executed + chrono::Duration::seconds(1) };
+        let created = executed - chrono::Duration::seconds(1);
+        serde_json::json!({"actionId":id,"source":"manual_security_trade","auditEventIds":[format!("audit-{id}")],
+            "confirmedAt":created,"confirmationObservedAt":created,"outcome":"orders_terminal","orders":[{
+                "orderId":id,"brokerOrderId":id,"sourceAdapter":"paper","symbol":"000001.SZ","side":side,"quantity":quantity,
+                "orderCreatedAt":created,"terminalObservedAt":observed,"terminalStatus":"filled","fills":[{
+                    "tradeId":id,"observationEventId":id,"observationSequence":index+1,"tradeDate":date(day),
+                    "executedAt":executed,"observedAt":observed,"feeObservationEventId":id,"feeObservationSequence":index+1,
+                    "feeObservedAt":observed,"timestampPrecision":"second","quantity":quantity,"price":"10","totalFee":"1"
+                }]
+            }]})
+    }).collect::<Vec<_>>();
+    let mut source: ManualExecutionReplay = serde_json::from_value(serde_json::json!({
+        "schema":MANUAL_REPLAY_SCHEMA,"runtimeId":"r","accountId":"a","sourceContractSha256":"a".repeat(64),
+        "contentSha256":"","observationCutoff":"2026-09-15T08:00:00Z","actions":actions,
+    })).unwrap();
+    source.content_sha256 = source.content_digest().unwrap();
+    source.validate().unwrap();
+    source
+}
+
+struct Hold;
+impl Strategy for Hold {
+    fn name(&self) -> &str {
+        "manual corporate observation"
+    }
+    fn requires_minute_callbacks(&self) -> bool {
+        false
+    }
+}
+
+fn run_custom<S: Strategy>(
+    data: DataSet,
+    source: ManualExecutionReplay,
+    strategy: S,
+    cash_dividends: bool,
+    adjust_cost: bool,
+) -> Result<fidc_core::BacktestResult, fidc_core::BacktestError> {
+    let broker = BrokerSimulator::new(ChinaAShareCostModel::default(), ChinaEquityRuleHooks)
+        .with_matching_type(MatchingType::NextBarOpen)
+        .with_volume_limit(false)
+        .with_liquidity_limit(false);
+    BacktestEngine::new(
+        data,
+        strategy,
+        broker,
+        BacktestConfig {
+            initial_cash: 10000.,
+            benchmark_code: "000300.SH".into(),
+            start_date: Some(date(10)),
+            end_date: Some(date(15)),
+            decision_lag_trading_days: 0,
+            execution_price_field: PriceField::Open,
+        },
+    )
+    .with_cash_dividends(cash_dividends)
+    .with_cash_dividend_cost_basis_adjustment(adjust_cost)
+    .with_observed_manual_executions(source)
+    .unwrap()
+    .run()
+}
+
+fn run(
+    action: Action,
+    delayed: bool,
+    sell: bool,
+) -> Result<fidc_core::BacktestResult, fidc_core::BacktestError> {
+    run_custom(data(action), source(delayed, sell), Hold, true, true)
+}
+
+#[test]
+fn delayed_buy_does_not_lose_corporate_entitlements() {
+    for action in [Action::Split, Action::Dividend, Action::Successor] {
+        let timely = run(action, false, false).unwrap();
+        let delayed = run(action, true, false).unwrap();
+        let project = |result: &fidc_core::BacktestResult| {
+            (
+                result.equity_curve.last().unwrap().cash,
+                result.equity_curve.last().unwrap().total_equity,
+                result
+                    .holdings_summary
+                    .iter()
+                    .map(|row| (row.symbol.clone(), row.quantity))
+                    .collect::<Vec<_>>(),
+            )
+        };
+        assert_eq!(project(&delayed), project(&timely), "{action:?}");
+        assert_eq!(delayed.manual_executions.len(), 1);
+        assert!(delayed.fills.is_empty());
+        if matches!(action, Action::Successor)
+            && let Ok(directory) = std::env::var("FIDC_CORPORATE_QA_OUTPUT")
+        {
+            use std::io::Write;
+            let path = std::path::Path::new(&directory).join("corporate-successor-result.json");
+            let mut options = std::fs::OpenOptions::new();
+            options.write(true).create_new(true);
+            #[cfg(unix)]
+            {
+                use std::os::unix::fs::OpenOptionsExt;
+                options.mode(0o600);
+            }
+            let mut file = options.open(path).unwrap();
+            file.write_all(&serde_json::to_vec(&serde_json::json!({
+                "source":delayed.manual_execution_source.as_deref(), "applications":delayed.manual_executions,
+            })).unwrap()).unwrap();
+        }
+    }
+}
+
+#[test]
+fn delayed_sale_does_not_keep_unearned_corporate_entitlements() {
+    for action in [Action::Split, Action::Dividend, Action::Successor] {
+        let timely = run(action, false, true).unwrap();
+        let delayed = run(action, true, true).unwrap();
+        let project = |result: &fidc_core::BacktestResult| {
+            (
+                result.equity_curve.last().unwrap().cash,
+                result.equity_curve.last().unwrap().total_equity,
+                result
+                    .holdings_summary
+                    .iter()
+                    .map(|row| (row.symbol.clone(), row.quantity))
+                    .collect::<Vec<_>>(),
+            )
+        };
+        assert_eq!(project(&delayed), project(&timely), "{action:?}");
+        assert_eq!(delayed.manual_executions.len(), 2);
+        assert!(delayed.fills.is_empty());
+    }
+}
+
+#[test]
+fn paper_and_broker_observations_require_the_same_frozen_successor_scope() {
+    for adapter in ["paper", "gt", "qmt"] {
+        for delayed in [false, true] {
+            for sell in [false, true] {
+                let mut replay = source(delayed, sell);
+                for action in &mut replay.actions {
+                    for order in &mut action.orders { order.source_adapter = Some(adapter.into()); }
+                }
+                replay.content_sha256 = replay.content_digest().unwrap();
+                replay.validate().unwrap();
+                let complete = run_custom(data(Action::Successor), replay.clone(), Hold, true, true).unwrap();
+                assert_eq!(complete.holdings_summary[0].symbol, "000002.SZ");
+                assert_eq!(complete.holdings_summary[0].quantity, 200);
+                assert!(complete.fills.is_empty());
+                assert!(complete.order_events.is_empty());
+                let error = run_custom(data_with_successor_metadata(Action::Successor, false),
+                    replay, Hold, true, true).unwrap_err();
+                assert!(error.to_string().contains("successor_instrument_missing"),
+                    "{adapter} delayed={delayed} sell={sell}: {error}");
+            }
+        }
+    }
+}
+
+fn protected_successor_run(delayed: bool, locked: bool, amount: i32)
+    -> fidc_core::BacktestResult {
+    let policy = fidc_core::holding_policy::AutomaticTradeProtection {
+        sell_cooldown_days: if locked { 0 } else { 3 },
+        locks: if locked { vec![fidc_core::holding_policy::AutomaticTradeLock {
+            symbol: "000001.SZ".into(), start_date: date(11), end_date: Some(date(15)),
+        }] } else { vec![] }, ..Default::default()
+    };
+    protected_successor_case(delayed, policy, amount, "partial")
+}
+
+fn protected_successor_case(delayed: bool,
+    policy: fidc_core::holding_policy::AutomaticTradeProtection, amount: i32, scenario: &str)
+    -> fidc_core::BacktestResult {
+    let mut config = fidc_core::PlatformExprStrategyConfig::generic();
+    config.signal_symbol = "000002.SZ".into();
+    config.benchmark_symbol = "000300.SH".into();
+    config.rotation_enabled = false;
+    config.matching_type = MatchingType::CurrentBarClose;
+    config.volume_capacity_mode = fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit;
+    config.explicit_action_schedule = Some(fidc_core::PlatformRebalanceSchedule {
+        frequency: fidc_core::PlatformScheduleFrequency::Daily,
+        time_rule: Some(fidc_core::ScheduleTimeRule::physical_time(14, 30)),
+    });
+    config.automatic_trade_protection = policy;
+    config.explicit_actions = vec![fidc_core::PlatformTradeAction::Order {
+        kind: fidc_core::PlatformExplicitOrderKind::Shares, symbol: "000002.SZ".into(),
+        amount_expr: amount.to_string(), when_expr: Some("decision_date == \"2026-09-15\"".into()),
+        limit_price_expr: None, time_in_force: None, start_time_expr: None, end_time_expr: None,
+        reason: "configured_successor_action".into(),
+    }];
+    let data = successor_execution_data();
+    let mut replay = source(delayed, true);
+    if scenario == "sold_before" {
+        let order = &mut replay.actions[1].orders[0];
+        order.quantity = 200; order.fills[0].quantity = 200;
+    } else if scenario == "cleared_after" {
+        let mut row = serde_json::to_value(&replay.actions[1]).unwrap();
+        let at = "2026-09-15T05:30:00Z";
+        let receipt = "2026-09-15T05:30:01Z";
+        row["actionId"] = "clear".into(); row["auditEventIds"] = serde_json::json!(["audit-clear"]);
+        row["confirmedAt"] = at.into(); row["confirmationObservedAt"] = at.into();
+        let order = &mut row["orders"][0];
+        order["orderId"] = "clear-order".into(); order["brokerOrderId"] = "clear-order".into();
+        order["symbol"] = "000002.SZ".into(); order["quantity"] = 200.into();
+        order["orderCreatedAt"] = at.into(); order["terminalObservedAt"] = receipt.into();
+        let fill = &mut order["fills"][0];
+        fill["tradeId"] = "clear-trade".into(); fill["observationEventId"] = "clear-receipt".into();
+        fill["observationSequence"] = 3.into(); fill["tradeDate"] = "2026-09-15".into();
+        fill["executedAt"] = at.into(); fill["observedAt"] = receipt.into();
+        fill["feeObservationEventId"] = "clear-receipt".into(); fill["feeObservationSequence"] = 3.into();
+        fill["feeObservedAt"] = receipt.into(); fill["price"] = "5".into(); fill["quantity"] = 200.into();
+        replay.actions.push(serde_json::from_value(row).unwrap());
+    }
+    replay.content_sha256 = replay.content_digest().unwrap();
+    BacktestEngine::new(data, fidc_core::PlatformExprStrategy::new(config),
+        BrokerSimulator::new(ChinaAShareCostModel::default(), ChinaEquityRuleHooks)
+            .with_matching_type(MatchingType::CurrentBarClose)
+            .with_volume_capacity_mode(fidc_core::execution_capacity::VolumeCapacityMode::SessionCapacityAudit),
+        BacktestConfig { initial_cash: 10000., benchmark_code: "000300.SH".into(),
+            start_date: Some(date(10)), end_date: Some(date(15)), decision_lag_trading_days: 0,
+            execution_price_field: PriceField::Close,
+        }).with_observed_manual_executions(replay).unwrap().run().unwrap()
+}
+
+fn successor_execution_data() -> DataSet {
+    let parts = data(Action::Successor).snapshot_components();
+    DataSet::from_components_with_actions_and_quotes(parts.instruments, parts.market,
+        parts.factors, parts.candidates, parts.benchmarks, parts.corporate_actions,
+        [30, 31].into_iter().map(|minute| fidc_core::IntradayExecutionQuote {
+            observation_kind: fidc_core::data::QuoteObservationKind::MinuteBar,
+            date: date(15), symbol: "000002.SZ".into(), timestamp: date(15).and_hms_opt(14,minute,0).unwrap(),
+            last_price: 5., bid1: 5., ask1: 5., bid1_volume: 100000, ask1_volume: 100000,
+            volume_delta: 100000, amount_delta: 500000., trading_phase: Some("continuous".into()),
+        }).collect()).unwrap()
+}
+
+#[test]
+fn native_pool_rebalance_applies_inherited_protection_without_rewriting_its_target() {
+    use fidc_core::stock_pool_execution as pool;
+    struct NativePool { locked: bool, expires: u32, exposure: i32 }
+    impl Strategy for NativePool {
+        fn name(&self) -> &str { "native pool successor protection" }
+        fn requires_minute_callbacks(&self) -> bool { false }
+        fn schedule_rules(&self) -> Vec<fidc_core::ScheduleRule> {
+            vec![fidc_core::ScheduleRule::daily("pool", fidc_core::ScheduleStage::OnDay)
+                .with_time_rule(fidc_core::ScheduleTimeRule::physical_time(14,30))]
+        }
+        fn on_scheduled(&mut self, ctx: &fidc_core::StrategyContext<'_>, _: &fidc_core::ScheduleRule)
+            -> Result<fidc_core::StrategyDecision, fidc_core::BacktestError> {
+            if ctx.execution_date != date(15) { return Ok(Default::default()); }
+            let symbols = vec!["000002.SZ".to_owned()];
+            let policy = fidc_core::holding_policy::AutomaticTradeProtection {
+                sell_cooldown_days: if self.locked { 0 } else { 3 },
+                locks: if self.locked { vec![fidc_core::holding_policy::AutomaticTradeLock {
+                    symbol: "000001.SZ".into(), start_date: date(11), end_date: Some(date(self.expires)),
+                }] } else { vec![] }, ..Default::default()
+            };
+            let contract = pool::FrozenStockPoolIntent {
+                pool_id: "pool".into(), signal_date: date(15), frozen_equity: 10000.into(),
+                selection: pool::StockPoolSelection { trade_date: date(15), requested_symbols: symbols.clone(),
+                    normal_trading_symbols: symbols.clone(), risk_eligible_symbols: symbols.clone(), final_symbols: symbols,
+                    exclusion_reasons: Default::default(), inherited_from_generation: None, explicit_empty: false,
+                    generation: Some("latest".into()),
+                }, members: vec![pool::StockPoolMemberSpec { symbol: "000002.SZ".into(), requested_order: 0,
+                    recommendation_reason: String::new(), target_weight_bps: None, stop_loss: None, take_profit: None }],
+                rule: pool::StockPoolExecutionRule { pricing_mode: pool::POOL_PRICE_FIRST_TICK.into(),
+                    window_start: "14:30".into(), window_end: "15:00".into(), automatic_trade_protection: policy,
+                    ..Default::default() }, constraints: pool::StockPoolDecisionConstraints {
+                    target_holding_count: Some(1), ..Default::default() },
+                invest_ratio_bps: self.exposure, reserve_cash: 0.into(), out_of_pool_policy: "hold".into(), generation: "latest".into(),
+            };
+            Ok(fidc_core::StrategyDecision { order_intents: vec![fidc_core::OrderIntent::StockPool { contract: Box::new(contract) }], ..Default::default() })
+        }
+    }
+    for delayed in [false, true] {
+        for (locked, expires, exposure) in [(false, 15, 10000), (true, 15, 10000), (true, 15, 0), (true, 14, 10000)] {
+            let result = BacktestEngine::new(successor_execution_data(), NativePool { locked, expires, exposure },
+                BrokerSimulator::new(ChinaAShareCostModel::default(), ChinaEquityRuleHooks)
+                    .with_matching_type(MatchingType::MinuteLast).with_intraday_execution_start_time(chrono::NaiveTime::from_hms_opt(14,30,0).unwrap())
+                    .with_volume_limit(false).with_liquidity_limit(false),
+                BacktestConfig { initial_cash: 10000., benchmark_code: "000300.SH".into(), start_date: Some(date(10)),
+                    end_date: Some(date(15)), decision_lag_trading_days: 0, execution_price_field: PriceField::Last })
+                .with_observed_manual_executions(source(delayed, true)).unwrap().run().unwrap();
+            if expires == 14 {
+                assert!(!result.fills.is_empty(), "positive control {:?}", result.order_events);
+            } else {
+                assert!(result.fills.is_empty(), "delayed={delayed} locked={locked} exposure={exposure}: {:?}", result.fills);
+                assert!(result.order_events.is_empty());
+                assert_eq!(result.holdings_summary[0].quantity, 200);
+            }
+        }
+    }
+}
+
+#[test]
+fn successor_keeps_sell_cooldown_for_timely_and_delayed_receipts() {
+    for delayed in [false, true] {
+        let result = protected_successor_run(delayed, false, 100);
+        assert!(result.fills.is_empty(), "delayed={delayed}: {:?}", result.fills);
+        assert!(result.order_events.is_empty(), "delayed={delayed}: {:?}", result.order_events);
+        assert!(result.risk_decisions.iter().any(|row| row.symbol == "000002.SZ"
+            && row.date == date(15) && !row.accepted && row.rule_code == "sell_fill_cooldown"),
+            "orders={:?} risk={:?} notes={:?}", result.order_events, result.risk_decisions,
+            result.equity_curve.iter().map(|row| (&row.date, &row.notes)).collect::<Vec<_>>());
+        assert_eq!(result.holdings_summary[0].quantity, 200);
+    }
+}
+
+#[test]
+fn converted_holding_does_not_lose_its_configured_date_lock() {
+    for delayed in [false, true] {
+        for amount in [-100, 100] {
+            let result = protected_successor_run(delayed, true, amount);
+            assert!(result.fills.is_empty(), "delayed={delayed} amount={amount}: {:?}", result.fills);
+            assert!(result.order_events.is_empty(), "delayed={delayed} amount={amount}: {:?}", result.order_events);
+            assert!(result.risk_decisions.iter().any(|row| row.symbol == "000002.SZ"
+                && row.date == date(15) && !row.accepted && row.rule_code == "automatic_trade_locked"),
+                "orders={:?} risk={:?} notes={:?}", result.order_events, result.risk_decisions,
+                result.equity_curve.iter().map(|row| (&row.date, &row.notes)).collect::<Vec<_>>());
+            assert_eq!(result.holdings_summary[0].quantity, 200);
+        }
+    }
+}
+
+#[test]
+fn successor_lock_expires_on_the_original_configured_date_not_the_conversion_date() {
+    for delayed in [false, true] {
+        let policy = fidc_core::holding_policy::AutomaticTradeProtection {
+            locks: vec![fidc_core::holding_policy::AutomaticTradeLock {
+                symbol: "000001.SZ".into(), start_date: date(11), end_date: Some(date(14)),
+            }], ..Default::default()
+        };
+        let result = protected_successor_case(delayed, policy, 100, "partial");
+        assert_eq!(result.fills.len(), 1);
+        assert_eq!(result.fills[0].quantity, 100);
+        assert_eq!(result.holdings_summary[0].quantity, 300);
+    }
+}
+
+#[test]
+fn lock_survives_a_manual_clear_after_conversion_but_not_a_disproved_conversion() {
+    for delayed in [false, true] {
+        let policy = fidc_core::holding_policy::AutomaticTradeProtection {
+            locks: vec![fidc_core::holding_policy::AutomaticTradeLock {
+                symbol: "000001.SZ".into(), start_date: date(11), end_date: Some(date(15)),
+            }], ..Default::default()
+        };
+        let cleared = protected_successor_case(delayed, policy.clone(), 100, "cleared_after");
+        assert!(cleared.fills.is_empty());
+        assert!(cleared.order_events.is_empty());
+        assert!(cleared.holdings_summary.is_empty());
+        assert_eq!(cleared.manual_executions.len(), 3);
+        let unconverted = protected_successor_case(delayed, policy, 100, "sold_before");
+        assert_eq!(unconverted.fills.len(), 1);
+        assert_eq!(unconverted.holdings_summary[0].quantity, 100);
+    }
+}
+
+#[test]
+fn corporate_replay_preserves_issued_orders_cash_flows_financing_and_charged_fees() {
+    struct ExistingActivity {
+        receiving_days: usize,
+    }
+    impl Strategy for ExistingActivity {
+        fn name(&self) -> &str {
+            "corporate replay with original activity"
+        }
+        fn requires_minute_callbacks(&self) -> bool {
+            false
+        }
+        fn on_day(
+            &mut self,
+            ctx: &fidc_core::StrategyContext<'_>,
+        ) -> Result<fidc_core::StrategyDecision, fidc_core::BacktestError> {
+            use fidc_core::OrderIntent;
+            let order_intents = if ctx.execution_date == date(10) {
+                vec![
+                    OrderIntent::DepositWithdraw {
+                        amount: 500.,
+                        receiving_days: self.receiving_days,
+                        reason: "original deposit".into(),
+                    },
+                    OrderIntent::FinanceRepay {
+                        amount: 200.,
+                        reason: "original financing".into(),
+                    },
+                    OrderIntent::SetManagementFeeRate {
+                        rate: 0.001,
+                        reason: "original fee policy".into(),
+                    },
+                ]
+            } else if ctx.execution_date == date(11) {
+                vec![OrderIntent::Shares {
+                    symbol: "000002.SZ".into(),
+                    quantity: 100,
+                    reason: "unrelated stock".into(),
+                }]
+            } else if ctx.execution_date == date(14) {
+                vec![OrderIntent::Shares {
+                    symbol: "000001.SZ".into(),
+                    quantity: 100,
+                    reason: "already issued after corporate action".into(),
+                }]
+            } else {
+                vec![]
+            };
+            Ok(fidc_core::StrategyDecision {
+                order_intents,
+                ..Default::default()
+            })
+        }
+        fn management_fee(
+            &mut self,
+            _: &fidc_core::StrategyContext<'_>,
+            _: f64,
+        ) -> Result<Option<f64>, fidc_core::BacktestError> {
+            Ok(Some(0.25))
+        }
+    }
+    for receiving_days in [0, 1] {
+        for sell in [false, true] {
+            let timely = run_custom(
+                data(Action::Split),
+                source(false, sell),
+                ExistingActivity { receiving_days },
+                true,
+                true,
+            )
+            .unwrap();
+            let delayed = run_custom(
+                data(Action::Split),
+                source(true, sell),
+                ExistingActivity { receiving_days },
+                true,
+                true,
+            )
+            .unwrap();
+            assert_eq!(
+                serde_json::to_value(&timely.fills).unwrap(),
+                serde_json::to_value(&delayed.fills).unwrap()
+            );
+            assert_eq!(delayed.fills.len(), 2);
+            assert_eq!(
+                delayed.equity_curve.last().unwrap().cash,
+                timely.equity_curve.last().unwrap().cash
+            );
+            assert_eq!(
+                delayed.equity_curve.last().unwrap().total_equity,
+                timely.equity_curve.last().unwrap().total_equity
+            );
+            assert_eq!(
+                delayed
+                    .equity_curve
+                    .iter()
+                    .map(|row| row.external_cash_flow)
+                    .sum::<f64>(),
+                500.
+            );
+            assert_eq!(delayed.manual_executions.len(), if sell { 2 } else { 1 });
+        }
+    }
+}
+
+#[test]
+fn pending_and_disabled_dividends_keep_the_configured_cash_and_cost_contract() {
+    for paid in [false, true] {
+        for enabled in [false, true] {
+            for adjust_cost in [false, true] {
+                let fixture = || {
+                    let mut parts = data(Action::Dividend).snapshot_components();
+                    parts.corporate_actions[0].payable_date =
+                        Some(date(if paid { 14 } else { 16 }));
+                    DataSet::from_components_with_actions(
+                        parts.instruments,
+                        parts.market,
+                        parts.factors,
+                        parts.candidates,
+                        parts.benchmarks,
+                        parts.corporate_actions,
+                    )
+                    .unwrap()
+                };
+                let timely =
+                    run_custom(fixture(), source(false, false), Hold, enabled, adjust_cost)
+                        .unwrap();
+                let delayed =
+                    run_custom(fixture(), source(true, false), Hold, enabled, adjust_cost).unwrap();
+                assert_eq!(
+                    delayed.equity_curve.last().unwrap().cash,
+                    timely.equity_curve.last().unwrap().cash
+                );
+                let financial = |result: &fidc_core::BacktestResult| {
+                    result
+                        .holdings_summary
+                        .iter()
+                        .map(|row| {
+                            (
+                                row.symbol.clone(),
+                                row.quantity,
+                                row.average_cost,
+                                row.last_price,
+                                row.market_value,
+                                row.unrealized_pnl,
+                                row.realized_pnl,
+                                row.pnl,
+                                row.dividend_receivable,
+                            )
+                        })
+                        .collect::<Vec<_>>()
+                };
+                // Receipt-day turnover is deliberately different when the
+                // dividend option is disabled and no adjustment is required.
+                assert_eq!(financial(&delayed), financial(&timely));
+                assert_eq!(
+                    delayed.manual_executions[0].corporate_adjustment.is_some(),
+                    enabled
+                );
+                if enabled && !paid {
+                    assert_eq!(delayed.terminal_audit.cash_receivable_count, 1);
+                }
+            }
+        }
+    }
+}
+
+#[test]
+fn late_fill_replays_aggregate_split_rounding_not_an_independent_rounded_fragment() {
+    let fixture = || {
+        let mut parts = data(Action::Split).snapshot_components();
+        parts.corporate_actions[0].share_bonus = 0.125;
+        for row in &mut parts.market {
+            if row.symbol == "000001.SZ" && row.date >= date(14) {
+                row.day_open = 8.89;
+                row.open = 8.89;
+                row.close = 8.89;
+                row.last_price = 8.89;
+                row.high = 8.89;
+                row.low = 8.89;
+                row.prev_close = 8.89;
+                row.bid1 = 8.89;
+                row.ask1 = 8.89;
+                row.upper_limit = 9.78;
+                row.lower_limit = 8.;
+            }
+        }
+        DataSet::from_components_with_actions(
+            parts.instruments,
+            parts.market,
+            parts.factors,
+            parts.candidates,
+            parts.benchmarks,
+            parts.corporate_actions,
+        )
+        .unwrap()
+    };
+    let input = |delayed| {
+        let mut value = source(delayed, true);
+        value.actions[0].orders[0].quantity = 100;
+        value.actions[0].orders[0].fills[0].quantity = 100;
+        value.actions[1].orders[0].side = fidc_core::OrderSide::Buy;
+        value.content_sha256 = value.content_digest().unwrap();
+        value
+    };
+    let timely = run_custom(fixture(), input(false), Hold, true, true).unwrap();
+    let delayed = run_custom(fixture(), input(true), Hold, true, true).unwrap();
+    assert_eq!(timely.holdings_summary[0].quantity, 225);
+    assert_eq!(delayed.holdings_summary[0].quantity, 225);
+    assert_eq!(
+        delayed.equity_curve.last().unwrap().total_equity,
+        timely.equity_curve.last().unwrap().total_equity
+    );
+    assert_eq!(
+        delayed.manual_executions[1]
+            .corporate_adjustment
+            .as_ref()
+            .unwrap()
+            .positions["000001.SZ"]
+            .quantity_before,
+        113
+    );
+}

crates/fidc-core/tests/stock_pool_execution_state.rs

@@ -0,0 +1,316 @@
+use chrono::NaiveDate;
+use fidc_core::stock_pool_execution::*;
+use fidc_core::stock_pool_state::StockPoolExecutionState;
+use rust_decimal::Decimal;
+use serde_json::json;
+use std::collections::BTreeMap;
+
+fn day(value: u32) -> NaiveDate {
+    NaiveDate::from_ymd_opt(2026, 9, value).unwrap()
+}
+fn member() -> StockPoolMemberSpec {
+    StockPoolMemberSpec {
+        symbol: "000001.SZ".into(),
+        requested_order: 0,
+        recommendation_reason: String::new(),
+        target_weight_bps: None,
+        stop_loss: None,
+        take_profit: None,
+    }
+}
+fn held(quantity: i64, closable: i64) -> Position {
+    Position {
+        symbol: "000001.SZ".into(),
+        quantity: quantity.into(),
+        closable_quantity: closable.into(),
+        average_cost: 10.into(),
+    }
+}
+fn quote() -> MarketSnapshot {
+    MarketSnapshot {
+        symbol: "000001.SZ".into(),
+        last_price: 10.into(),
+        prev_close: Some(10.into()),
+        volume: Some(1000000.into()),
+        turnover: Some(10000000.into()),
+        bid_price_1: Some(10.into()),
+        ask_price_1: Some(10.into()),
+        is_kcb: Some(false),
+        instrument_rules: None,
+        buy_sizing_price: None,
+        sell_sizing_price: None,
+    }
+}
+fn plan(
+    state: &StockPoolExecutionState,
+    at: NaiveDate,
+    members: &[StockPoolMemberSpec],
+    positions: &[Position],
+    cash: i64,
+    outside: &str,
+) -> StockPoolPlan {
+    plan_at_price(state, at, members, positions, cash, outside, 10)
+}
+fn plan_at_price(
+    state: &StockPoolExecutionState,
+    at: NaiveDate,
+    members: &[StockPoolMemberSpec],
+    positions: &[Position],
+    cash: i64,
+    outside: &str,
+    price: i64,
+) -> StockPoolPlan {
+    let symbols = members
+        .iter()
+        .map(|member| member.symbol.clone())
+        .collect::<Vec<_>>();
+    let selection = StockPoolSelection {
+        trade_date: at,
+        requested_symbols: symbols.clone(),
+        normal_trading_symbols: symbols.clone(),
+        risk_eligible_symbols: symbols.clone(),
+        final_symbols: symbols,
+        exclusion_reasons: BTreeMap::new(),
+        inherited_from_generation: None,
+        explicit_empty: false,
+        generation: Some("same-goal".into()),
+    };
+    let mut constraints = stock_pool_constraints_from_configuration(
+        &json!({"top_n_rebalance_policy":"preserve_existing"}),
+        &json!({}),
+    )
+    .unwrap();
+    constraints.pending_entry_symbols = state.pending_symbols();
+    constraints.next_day_outside_exit_symbols = state.next_day_exit_symbols(at);
+    let mut market = quote();
+    market.last_price = price.into();
+    market.bid_price_1 = Some(price.into());
+    market.ask_price_1 = Some(price.into());
+    build_stock_pool_target_plan_with_constraints(
+        &selection,
+        members,
+        &StockPoolExecutionRule::default(),
+        &AccountSnapshot {
+            total_equity: 10000.into(),
+            cash: cash.into(),
+            frozen_cash: Decimal::ZERO,
+        },
+        positions,
+        &[market],
+        10000,
+        Decimal::ZERO,
+        outside,
+        "preserve_existing",
+        &constraints,
+        "same-goal",
+        Decimal::ZERO,
+        Decimal::ZERO,
+        Decimal::ZERO,
+    )
+    .unwrap()
+}
+
+#[test]
+fn fully_filled_entry_is_not_reopened_when_price_falls_before_next_observation() {
+    let members = vec![member()];
+    let calendar = vec![day(11), day(14)];
+    let initial = StockPoolExecutionState::default()
+        .observe(day(11), day(11), &calendar, &members, &[]).unwrap();
+    let first_plan = plan(&initial, day(11), &members, &[], 10000, "hold");
+    let state = initial.record_plan(day(11), "first-entry", &first_plan).unwrap();
+    assert_eq!(state.entries["000001.SZ"].completion_quantity, Some(1000.into()));
+    let state: StockPoolExecutionState = serde_json::from_slice(&serde_json::to_vec(&state).unwrap()).unwrap();
+    let observed = state.observe(day(14), day(14), &calendar, &members, &[held(1000, 1000)]).unwrap();
+    assert!(!observed.pending_symbols().contains("000001.SZ"));
+    let next = plan_at_price(&observed, day(14), &members, &[held(1000, 1000)], 1000, "hold", 8);
+    assert_eq!(next.rows[0].target_quantity, 1000.into());
+    assert_eq!(next.rows[0].delta_quantity, Decimal::ZERO);
+    assert_eq!(next.rows[0].status, "PRESERVED_EXISTING_POSITION");
+}
+
+#[test]
+fn cash_clipped_or_rejected_entry_does_not_claim_full_completion() {
+    let members = vec![member()];
+    let calendar = vec![day(11), day(14)];
+    let initial = StockPoolExecutionState::default()
+        .observe(day(11), day(11), &calendar, &members, &[]).unwrap();
+    let first_plan = plan(&initial, day(11), &members, &[], 5000, "hold");
+    assert_eq!(first_plan.rows[0].status, "REDUCE_TO_ALLOWED_QUANTITY");
+    let state = initial.record_plan(day(11), "limited-entry", &first_plan).unwrap();
+    assert_eq!(state.entries["000001.SZ"].completion_quantity, None);
+    for quantity in [0, 500] {
+        let positions = if quantity == 0 { vec![] } else { vec![held(quantity, quantity)] };
+        let observed = state.observe(day(14), day(14), &calendar, &members, &positions).unwrap();
+        assert!(observed.pending_symbols().contains("000001.SZ"));
+    }
+}
+
+#[test]
+fn legacy_state_without_quantity_keeps_its_serialized_identity() {
+    let original = json!({
+        "schema_version":1,"last_execution_date":"2026-09-11",
+        "entries":{"000001.SZ":{"pending":true,"observed_holding":false,
+        "first_decision_date":"2026-09-11","latest_generation":"legacy",
+        "latest_target_value":"10000"}},"last_target_weights":{},"removed_since":{}
+    });
+    let state: StockPoolExecutionState = serde_json::from_value(original.clone()).unwrap();
+    state.validate().unwrap();
+    assert_eq!(serde_json::to_value(state).unwrap(), original);
+}
+
+#[test]
+fn partial_exit_basis_is_immutable_restart_safe_and_scoped_to_the_signal() {
+    let original = StockPoolExecutionState::default()
+        .observe(day(11), day(11), &[day(11), day(14)], &[member()], &[held(1000, 1000)]).unwrap();
+    let basis = BTreeMap::from([("000001.SZ".into(), Decimal::from(1000))]);
+    let saved = original.record_position_action_bases("sell-signal", &basis).unwrap();
+    assert!(original.position_action_bases.is_empty(), "a preview must not mutate its input");
+    let restored: StockPoolExecutionState = serde_json::from_slice(&serde_json::to_vec(&saved).unwrap()).unwrap();
+    let next_day = restored.observe(day(11), day(14), &[day(11), day(14)], &[member()], &[held(500, 500)]).unwrap();
+    assert_eq!(next_day.position_action_bases_for("sell-signal"), basis);
+    assert!(next_day.position_action_bases_for("new-signal").is_empty());
+    assert!(next_day.record_position_action_bases("sell-signal", &BTreeMap::from([("000001.SZ".into(), Decimal::from(500))])).unwrap_err().contains("basis_changed"));
+    let new_signal = next_day.record_position_action_bases("new-signal", &BTreeMap::from([("000001.SZ".into(), Decimal::from(500))])).unwrap();
+    assert!(new_signal.position_action_bases_for("sell-signal").is_empty());
+    assert_eq!(new_signal.position_action_bases_for("new-signal")["000001.SZ"], Decimal::from(500));
+    for invalid in [Decimal::ZERO, Decimal::NEGATIVE_ONE] {
+        assert!(original.record_position_action_bases("signal", &BTreeMap::from([("000001.SZ".into(), invalid)])).is_err());
+    }
+    assert!(original.record_position_action_bases(" ", &basis).is_err());
+}
+
+#[test]
+fn verified_split_adjusts_exit_basis_and_entry_completion_not_generation() {
+    let initial = StockPoolExecutionState::default()
+        .observe(day(11), day(11), &[day(11)], &[member()], &[]).unwrap();
+    let entry_plan = plan(&initial, day(11), &[member()], &[], 10000, "hold");
+    let entered = initial.record_plan(day(11), "entry", &entry_plan).unwrap();
+    let saved = entered.record_position_action_bases("sell", &BTreeMap::from([("000001.SZ".into(), Decimal::from(1000))])).unwrap();
+    let adjusted = saved.adjust_for_split("000001.SZ", Decimal::new(15,1)).unwrap();
+    assert_eq!(adjusted.position_action_bases_for("sell")["000001.SZ"], Decimal::from(1500));
+    assert_eq!(adjusted.entries["000001.SZ"].completion_quantity, Some(Decimal::from(1500)));
+    assert_eq!(adjusted.position_action_bases["000001.SZ"].first_execution_date, day(11));
+    assert_eq!(saved.position_action_bases_for("sell")["000001.SZ"], Decimal::from(1000));
+    assert!(saved.adjust_for_split("000001.SZ", Decimal::ZERO).is_err());
+}
+
+#[test]
+fn partial_entry_continues_after_restart_then_completed_holdings_are_preserved() {
+    let members = vec![member()];
+    let calendar = vec![day(11), day(14)];
+    let first = StockPoolExecutionState::default()
+        .observe(day(11), day(11), &calendar, &members, &[])
+        .unwrap();
+    let initial = plan(&first, day(11), &members, &[], 10000, "hold");
+    assert_eq!(initial.rows[0].target_quantity, 1000.into());
+    let pending = first.record_plan(day(11), "same-goal", &initial).unwrap();
+    assert!(pending.entries["000001.SZ"].pending);
+    assert!(!pending.entries["000001.SZ"].observed_holding);
+    let persisted = serde_json::to_vec(&pending).unwrap();
+    let restored: StockPoolExecutionState = serde_json::from_slice(&persisted).unwrap();
+    let partial = restored
+        .observe(day(11), day(11), &calendar, &members, &[held(500, 0)])
+        .unwrap();
+    let retry = plan(&partial, day(11), &members, &[held(500, 0)], 5000, "hold");
+    assert_eq!(retry.rows[0].delta_quantity, 500.into(), "{retry:?}");
+    let pending = partial.record_plan(day(11), "same-goal", &retry).unwrap();
+    assert!(pending.entries["000001.SZ"].pending);
+    let filled = pending
+        .observe(day(14), day(14), &calendar, &members, &[held(1000, 1000)])
+        .unwrap();
+    let satisfied = plan(&filled, day(14), &members, &[held(1000, 1000)], 0, "hold");
+    assert_eq!(satisfied.rows[0].status, "PRESERVED_EXISTING_POSITION");
+    let completed = filled.record_plan(day(14), "new-day", &satisfied).unwrap();
+    assert!(!completed.entries["000001.SZ"].pending);
+    assert_eq!(
+        plan(
+            &completed,
+            day(14),
+            &members,
+            &[held(1000, 1000)],
+            0,
+            "hold"
+        )
+        .rows[0]
+            .status,
+        "PRESERVED_EXISTING_POSITION"
+    );
+}
+
+#[test]
+fn removal_anchor_is_not_reset_by_rechecks_weekends_or_t_plus_one() {
+    let calendar = vec![day(11), day(14), day(15)];
+    let positions = vec![held(1000, 1000)];
+    let removed = StockPoolExecutionState::default()
+        .observe(day(11), day(11), &calendar, &[], &positions)
+        .unwrap();
+    assert_eq!(removed.removed_since["000001.SZ"], day(11));
+    assert_eq!(
+        plan(
+            &removed,
+            day(11),
+            &[],
+            &positions,
+            0,
+            "reduce_next_trading_day"
+        )
+        .rows[0]
+            .status,
+        "DEFERRED_T_PLUS_ONE"
+    );
+    assert!(
+        removed
+            .observe(day(12), day(12), &calendar, &[], &positions)
+            .is_err()
+    );
+    let restored: StockPoolExecutionState =
+        serde_json::from_str(&serde_json::to_string(&removed).unwrap()).unwrap();
+    let monday = restored
+        .observe(day(14), day(14), &calendar, &[], &[held(1000, 0)])
+        .unwrap();
+    assert_eq!(monday.removed_since["000001.SZ"], day(11));
+    assert_eq!(
+        plan(
+            &monday,
+            day(14),
+            &[],
+            &[held(1000, 0)],
+            0,
+            "reduce_next_trading_day"
+        )
+        .rows[0]
+            .delta_quantity,
+        Decimal::ZERO
+    );
+    let next = monday
+        .observe(day(15), day(15), &calendar, &[], &positions)
+        .unwrap();
+    let exit = plan(
+        &next,
+        day(15),
+        &[],
+        &positions,
+        0,
+        "reduce_next_trading_day",
+    );
+    assert_eq!(exit.rows[0].target_quantity, Decimal::ZERO);
+    assert_eq!(exit.rows[0].side, Some(OrderSide::Sell));
+    let returned = next
+        .observe(day(15), day(15), &calendar, &[member()], &positions)
+        .unwrap();
+    assert!(returned.removed_since.is_empty());
+}
+
+#[test]
+fn cloned_preview_does_not_start_a_timer_and_next_open_uses_signal_removal_date() {
+    let state = StockPoolExecutionState::default();
+    let calendar = vec![day(11), day(14)];
+    let preview = state
+        .observe(day(11), day(14), &calendar, &[], &[held(1000, 1000)])
+        .unwrap();
+    assert!(state.removed_since.is_empty());
+    assert!(preview.next_day_exit_symbols(day(14)).contains("000001.SZ"));
+    let mut invalid = preview;
+    invalid.schema_version = 0;
+    assert!(invalid.validate().is_err());
+}

crates/fidc-core/tests/strategy_selection.rs

@@ -35,7 +35,7 @@ fn market(
 ) -> DailyMarketSnapshot {
     DailyMarketSnapshot {
         date: d(date),
-        symbol: symbol.to_string(),
+        symbol: symbol.into(),
         timestamp: None,
         day_open: open,
         open,
@@ -66,12 +66,13 @@ fn factor(
 ) -> DailyFactorSnapshot {
     DailyFactorSnapshot {
         date: d(date),
-        symbol: symbol.to_string(),
+        symbol: symbol.into(),
         market_cap_bn,
         free_float_cap_bn,
         pe_ttm: 18.0,
         turnover_ratio: None,
         effective_turnover_ratio: None,
+        adjustment_factor_backward1: None,
         extra_factors: Default::default(),
     }
 }
@@ -86,7 +87,7 @@ fn candidate(
 ) -> CandidateEligibility {
     CandidateEligibility {
         date: d(date),
-        symbol: symbol.to_string(),
+        symbol: symbol.into(),
         is_st: false,
         is_star_st: false,
         is_new_listing,

crates/fidc-signal-client/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "fidc-signal-client"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+
+[dependencies]
+fidc-core = { path = "../fidc-core" }
+reqwest.workspace = true
+serde_json.workspace = true

crates/fidc-signal-client/src/lib.rs

@@ -0,0 +1,43 @@
+//! Shared signal transport for FIDC backtest and trading services.
+
+use std::sync::Arc;
+use fidc_core::signal_contract::{SignalBookReference,ValidatedSignalBook,cached_signal_book,register_signal_book};
+use reqwest::Client;
+use serde_json::{Value,json};
+
+#[derive(Clone,Copy)]
+pub enum Purpose { Backtest, Online }
+
+pub async fn load(client:&Client, source_url:&str, token:&str, reference:&SignalBookReference, purpose:Purpose)
+    -> Result<Arc<ValidatedSignalBook>,String>
+{
+    reference.validate()?;
+    if token.len()<32 {return Err("signal_service_auth_not_configured".into());}
+    let purpose_name=match purpose {Purpose::Backtest=>"backtest",Purpose::Online=>"online"};
+    let payload=json!({"reference":reference,"purpose":purpose_name});
+    let root=format!("{}/api/strategy-signals/internal",source_url.trim_end_matches('/'));
+    // Registration/purpose validation always precedes a process-cache hit.
+    let response=client.post(format!("{root}/validate"))
+        .header("X-FIDC-Lifecycle-Token",token).json(&payload).send().await
+        .map_err(|_|"signal_validation_service_unavailable")?;
+    if !response.status().is_success() {return Err(format!("signal_validation_rejected_http_{}",response.status()));}
+    let validation:Value=response.json().await.map_err(|_|"signal_validation_response_invalid")?;
+    if validation.get("ok")!=Some(&Value::Bool(true)) || validation.get("reference")!=Some(&json!(reference)) {
+        return Err("signal_validation_identity_mismatch".into());
+    }
+    let book=if let Some(book)=cached_signal_book(reference)? {book} else {
+        let mut response=client.post(format!("{root}/book"))
+            .header("X-FIDC-Lifecycle-Token",token).json(&payload).send().await
+            .map_err(|_|"signal_book_service_unavailable")?;
+        if !response.status().is_success() {return Err(format!("signal_book_rejected_http_{}",response.status()));}
+        if response.content_length().is_some_and(|bytes|bytes>64*1024*1024) {return Err("signal_book_transport_size_exceeded".into());}
+        let mut bytes=Vec::new();
+        while let Some(chunk)=response.chunk().await.map_err(|_|"signal_book_transport_incomplete")? {
+            if bytes.len().saturating_add(chunk.len())>64*1024*1024 {return Err("signal_book_transport_size_exceeded".into());}
+            bytes.extend_from_slice(&chunk);
+        }
+        register_signal_book(reference,&bytes)?
+    };
+    if matches!(purpose,Purpose::Online) {book.require_observed()?;}
+    Ok(book)
+}

docs/automatic-trade-protection-20260911.md

@@ -0,0 +1,26 @@
+# 策略级自动交易保护
+
+## 统一合同
+
+`runtimeExpressions.trading.automaticTradeProtection` 是每个股票/ETF策略自己的不可变配置。股票池、表达式轮动和显式订单复用 `holding_policy` 内核，不新增全局共享配置，也不修改未配置的历史策略。
+
+```json
+{"buy_protection_days":3,"sell_cooldown_days":3,"max_holding_days":90,"locks":[{"symbol":"000001.SZ","start_date":"2026-09-11","end_date":"2026-09-16"}]}
+```
+
+- 周期为空、null或0关闭，必须为0—3650整数；锁定支持同股多个区间，起止日包含当日，截止null持续有效。
+- 买入保护禁止自动减仓/清仓及止盈止损；卖出冷却禁止自动增加仓位。只有实际成交计时，部分成交延长对应最后成交日；未成交、拒绝、撤单不启动。
+- 成交日及后续N个完整正式交易日均受保护。例如周五成交、N=3，保护到下周三结束，周四恢复；不按72小时或自然日替代。
+- 最长持有从连续持仓第一次实际买入开始，跨正式交易日计数；加仓、部分卖出和有证据的证券转换不重置，完全卖出再买入开启新周期。锁定和买入保护优先于最长持有退出。
+- 日期锁定禁止自动买卖，已接受的挂单不自动撤销；手工路径只绕过自动策略保护，不绕过账户授权、T+1、券商和风控。
+- 已校验且实际发生的持仓换股继承原保护期限与日期锁，不因改代码解锁或重计时；无实际转换的目录映射不继承。换股后手工清仓仍受原有效日期锁；确认换股前已清仓时不保留推定关系。原生策略、股票池与ETF顺延消费的修复及未发布边界见 `successor-protection-20260914.md`。
+- 保留的真实持仓继续占用资金与席位，不把未完成卖出当现金。最长持有退出先形成唯一最终目标，不能叠加一笔策略部分卖出和一笔框架全量卖出。
+- 在线上下文重建必须注入已经校验的真实成交/持仓快照，不能把重建日或旧行情日当建仓日。期货或股票期货混合账户未纳入本合同，显式拒绝。
+
+## 根因补充修复
+
+组合 `decision_date == "2026-09-11" && symbol == "000001.SZ"` 会落到字符串表达式路径。旧代码遗漏日期等内建标识符的保留登记，又按“额外因子”注入NaN，覆盖同名真实日期，造成选股错误。现登记全部已注入内建字段，并禁止额外因子覆盖已存在的作用域变量。单独数字VM日期测试不足以发现该问题，新增日期+证券混合选择回归。
+
+## 验证与边界
+
+原生完整回测测试验证：显式策略真实模拟成交日启动3日保护/禁买、日期锁定零委托、最长持有让位于保护、锁定持仓占据资金与席位、解锁后才按候选顺序买入；序列化和别名归一不改max_holding_days字段，冲突策略拒绝。现有534核心用例通过（6个既有忽略项）。这些是隔离内核测试，不是GT实际成交验收。

docs/callback-context-and-pending-targets-20260914.md

@@ -0,0 +1,55 @@
+# 回报上下文、盘前意图与尚未提交的目标
+
+2026-09-14。本轮已配套发布177，annotated tag `v2026.9.14.5`。Engine81acc54 / Service e81bf47 / Trading94f99d2；完整股票池Goal继续，不据本阶段关闭。
+
+## 已复现问题
+
+1. `on_process_event`总是收到`active_datetime=None`及空委托/成交数组。10:00账本已有100股，但Trade/PostMinute回调的成交数量仍为0；不能靠普通`on_minute`已修复就认为通知链也完整。
+2. 15:05盘后成交后，PreAfterTrading仍被标为15:00；跨日模式的PostOnDay又使用信号日描述执行日已发生的成交。
+3. BeforeTrading调度只处理订阅、账户和期货指令，剩余股票买卖/撤改意图没有后续消费。简单在开盘调用普通broker执行还会让旧挂单先成交再撤单。
+4. 合并完整目标时只追加权重会保留旧证券；更重要的是，不能先提交盘前旧组合，之后才计算同一窗口的新目标，否则T+1可能使错误买入无法纠正。
+5. 策略计算前的空broker调用也会恢复上一目标的未提交买入腿。反例中原持仓100股，09:30卖25股、13:00卖剩余75股；若此时先恢复旧买入，已经准备将新目标设为0%的策略仍会买入另一股票3000股。
+
+## 本轮处理
+
+- 事件通知显式携带当前可见的委托、成交与回调时钟，移动已完成记录后再通知，不按每个回调复制整段历史。上下文是通知时已完成批次的最新状态，不冒充每一历史通知发生瞬间的账本快照。
+- 信号计算回调保留信号日；账户/委托通知使用实际执行日与物理时钟。默认收盘和结算不早于已处理时刻及当前适用的盘后结束点，管理费回调沿用同一完成时钟。
+- 盘前撤改走明确的非撮合控制阶段，保持原订单ID和实际已成交量；该入口拒绝买卖目标，不会顺带撮合旧单。普通显式买卖按原配置窗口执行，后续回调读取撤改后的真实活动订单。
+- 盘前与集合竞价的显式命令保留各自批次及约束。纯完整组合（完整rebalance或单一StockPool/TargetPortfolioSmart）可以被更新的完整意图替换；空回调不等于清仓，显式空完整目标才清仓。被替换意图的旧买入限制不能污染新完整目标。
+- 尚未提交的完整目标保留到当前窗口日度策略算完；新执行意图优先，只有没有新执行意图时才使用前面的目标。已提交挂单可以先更新实际成交，但策略计算前不恢复旧的未提交买入腿，之后再由正常执行路径处理当前意图。
+- 订阅/账户/直接期货指令通知同样获得完成后的历史；本轮不改变期货成交、会话或费用规则。
+
+## 回归证据
+
+- 通知链：09:30为空、10:00/10:01均看到100股及1笔实际成交，Trade通知可找到相同订单。
+- 盘后：15:05成交后的默认收盘/结算和管理费通知不倒退；next-open保持独立信号日和执行日。
+- 盘前：09:00生成100股命令，分别只在09:30/13:00配置窗口成交；保留备注/诊断。跨日撤销原GTC订单后，新订单只成交100股，未让旧单先成交。
+- 完整目标：盘前A、集合竞价B、日度A或显式空目标，最终只采用有效最新目标；日度无新信号时保持B。显式逐股命令不会被目标合并丢弃。
+- 恢复顺序：开启正常旧恢复的单点负向对照确实多买3000股；恢复BeforeStrategy阶段后，只有原股票同一卖单的25+75股成交，无新增买入，最终持仓为空。
+- 本机Core834项通过（9项原有ignore），Trading613、最新main Runner446/API119通过。外部数据库及平台ignore不当作通过。
+
+精确只读快照在Linux通过Core834及Trading613。旧二进制先独立归档，构建保持1GiB磁盘余量；本轮未再次删除缓存或业务文件。
+
+## 发布与真实历史复验
+
+已推送annotated tag `v2026.9.14.5`对应Engine `81acc5422878abc855fca72b35766ffad6159200`、Service `e81bf47806f5ac4ae4798bb5f5955a56638f754c`、Trading `94f99d20f49f6cd1810996706cb94f610c302385`。回测API/Runner于06:15:53 CST切换，五交易单元06:21:09切换，06:22实际运行文件和业务事实复核通过。
+
+三组冻结合同共六次独立原生A/B，完整Canonical及equity/orders/trades/holdings逐行一致；再通过生产HTTP各提交一次，结果分别匹配原生候选，旧记录未改写：
+
+| 案例 | 生产回测ID | 成交 / 持仓 | 期末权益 |
+| --- | --- | --- | ---: |
+| 手选优先四证券 | btr_req_44f1bb067559946ef22941a0c425ed53e47515e04b399e20 | 10 / 4 | 9706248.648662 |
+| 自动优先四证券 | btr_req_078f129ed46b55ba72b47605983a00ae3eef14b1995e1237 | 10 / 4 | 9706248.648662 |
+| 许总24只原v3 | btr_req_ef37b8ea403f489e4798d2878e0ef85966ace550f6b4f3c4 | 51 / 21 | 9685563.876924999 |
+
+重复目标委托0。三条新记录各5个交易日事件落库，持久事件27/18/32条，唯一键计数分别相同；旧流式样本仍27条/5日。仍为原合同下的日终容量审计，不外推实时盘口成交能力；首次Source准备和后续快速返回也不作为性能优化证明。
+
+API SHA `dea170902d77734d0a77c4da7dad71a70b33f76467e0608675dfbcc9d35d67fc`，Runner SHA `b1d93215deb275fbec6217c6b9afbf717d5649600716bf4f3a1bf5d1cfa69731`，运行实现身份 `fed10e9fa61836aa271921f5d58490054210d83da935cad5de11cfacab45c13e`。API发布目录`/srv/fidc/canonical/run/backtest-api/releases/callback-81acc54-7w1zx9fb`，回退目录`/srv/fidc/canonical/run/build/callback-rollback-j7oje2tz`；交易回退`holding-protection-rollback-czuric4r`。
+
+六服务实际SHA与manifest吻合，新增ERROR0。3Paper/0Live、配置、旧活动单、3个未确认Paper预览、迁移、影子配置0及disabled未变；发布后Paper/Live新订单0，未发送真实通知、委托或撤单。Source d5/PID1700096与UI6a2/PID3089476未重启，研究/信号暂停不变。177维护中的Engine9a54156完整保留，实际构建使用81acc54/e81bf47及81acc54/94f99d2的只读Git快照。
+
+原始回放/HTTP证据`/srv/fidc/canonical/run/research/stock-pool-callback-20260914/`；发布和最终审计`/tmp/fidc-callback-{candidate,api-release,trading-release,final-audit}-20260914.json`；非敏感汇总在`docs/evidence/callback-target-20260914/acceptance.json`。
+
+## 继续范围
+
+显式逐笔手工影子回放仍未完成，四类手工来源继续拒绝纯比例影子；原始撤单意图时刻不能用网关回报时刻冒充。还需继续检查会话外调度产生的未提交意图、完整阶段日历与其余参数/生命周期/适配器矩阵。Source冻结、研究/信号暂停、现有任务配置和真实路由不改。

docs/daily-pattern-signals.md

@@ -0,0 +1,24 @@
+# 完成日线形态与次日信号
+
+`fidc_daily_ohlcv_pattern_v1` 由 `fidc-core::daily_patterns` 单一计算核实现。Source Lake 只读取、核验及传输真实 OHLCV；研究服务和策略表达式不分别维护数值算法。
+
+四种量价条件为趋势强势、前高突破、放量上涨、缩量突破；额外提供独立的均线下方、放量下跌卖出条件。前三者名称不暗示当日金叉或价格突破等未实际检验的事实。
+
+## 应用阶段
+
+- `filter.stock_expr(pattern_signal("<模板 JSON>"))`：选择候选，再按既有顺序和 Top N 取目标。
+- `filter.buy_expr(pattern_signal("<模板 JSON>"))`：只限制正向仓位增量，不移除目标、不反向清仓，正常减仓不受影响。
+- `risk.stop_loss(pattern_signal("<独立卖出模板 JSON>"))`：独立退出条件，不使用买入条件的反值。
+- `pattern_score` 只可用于已通过形态条件的对象；没有放量参照或合法排除对象不伪造零分。
+
+参数是 JSON 字符串，例如 `pattern_signal("{\"template\":\"ma_below\",\"parameters\":{\"ma_window\":20}}")`。
+
+新规则必须显式 `execution.matching_type("next_bar_open")`。信号日 D 的完整日线不能用于 D 日盘前或盘中；历史回放按 D 决策、下一真实交易日执行，实时上下文使用已完成 D 日窗口。实际委托仍需要执行日行情、资金、可卖数量、交易许可和风控。不得用研究结果开启交易路由。
+
+## 数据与预热
+
+所有价格统一用真实 backward1 因子，成交量不复权。缺失、非有限值、无效 OHLC、重复、未来行、未声明停牌状态均拒绝。仅按明确上市日期证明的上市前窗口或正式停牌记录可以返回结构化排除；不补价、不跳过日期压缩窗口。有效价格但缺复权因子即使停牌也报错。回测和运行态须从表达式提取真实窗口需求，冻结完整日历预热。
+
+研究选择的范围及日期、上市/停牌排除证据、源查询和哈希需保留。固定候选的后续规则回测不等于历史全市场动态选股。CAPM 全区间拟合属于解释性诊断；要成为次日条件，必须另行使用截至 D 日的滚动估计并验证样本外表现，不得回填到拟合区间内。
+
+旧任务默认撮合、历史筛选记录和策略源码不变；用户显式创建新规则后才采用此合同。

docs/evidence/batched-current-rolling-rejection-20260905.json

@@ -0,0 +1,43 @@
+{
+  "schemaVersion": "fidc-batched-current-rolling-rejection/v1",
+  "measuredAt": "2026-09-05T02:38:00+08:00",
+  "host": "192.168.31.177",
+  "candidateCommit": "004a46c",
+  "revertCommit": "43b15b2098c427869a4a582b4b24325155b1370e",
+  "restoredRunnerBinarySha256": "a4135986b69625a0f3443e9091754874b3f9d65e9913424298c5d8fedf733985",
+  "candidate": {
+    "description": "collect static current rolling windows at strategy construction, batch them per stock, and store fixed current close/volume arrays in StockExpressionState",
+    "processColdEngineSeconds": 6.412,
+    "processHotEngineSeconds": [6.046, 6.497, 6.035, 6.309, 6.074],
+    "processHotMedianEngineSeconds": 6.074
+  },
+  "rollback": {
+    "processColdEngineSeconds": 5.18,
+    "processHotEngineSeconds": [5.48, 5.47, 4.602],
+    "processHotMedianEngineSeconds": 5.47
+  },
+  "observedCandidateRegressionPercent": 11.04204753199269,
+  "businessContract": {
+    "totalReturn": 0.9219861819172002,
+    "tradeCount": 26088,
+    "canonicalSha256": "b42fea66237d06eadb24f6b8c9e2760e7319fe3699f315b99e01f433ef2aa234",
+    "resultStoreSha256": "92343fb369fea68b2544b654151c5c43a935940580b14afbe8eefb3844f72a54",
+    "resultConsistent": true,
+    "terminalAuditStatus": "clean"
+  },
+  "testGate": {
+    "coreUnitTotal": 421,
+    "corePassed": 415,
+    "ignoredManualBenchmarks": 6,
+    "failed": 0,
+    "integrationSuitesPassed": true
+  },
+  "remoteArtifacts": [
+    "/srv/fidc/canonical/run/fidc-private/evidence/batched-current-rolling-primary-20260905.json",
+    "/srv/fidc/canonical/run/fidc-private/evidence/batched-current-rolling-rollback-20260905.json"
+  ],
+  "acceptance": {
+    "status": "rejected_and_removed",
+    "reason": "the larger per-stock state and eager batch work cost more than the repeated scalar helper calls on the real five-year workload"
+  }
+}

docs/evidence/cached-symbol-board-rejection-20260905.json

@@ -0,0 +1,54 @@
+{
+  "schemaVersion": "fidc-cached-symbol-board-rejection/v1",
+  "measuredAt": "2026-09-05T03:22:00+08:00",
+  "host": "192.168.31.177",
+  "candidateCommit": "eb8b146",
+  "revertCommit": "f210539",
+  "candidate": {
+    "description": "precompute a symbol-id-aligned BJSE bit vector and share one suffix classifier between platform expressions and risk control",
+    "primaryHotEngineSeconds": [4.656, 4.759, 4.669, 4.698, 4.614],
+    "primaryHotMedianEngineSeconds": 4.669,
+    "acceptedPrimaryBaselineMedianEngineSeconds": 4.729,
+    "primaryObservedImprovementPercent": 1.2687661249735674,
+    "secondaryLowContentionEngineSeconds": [4.404, 4.327, 4.346],
+    "secondaryLowContentionMedianEngineSeconds": 4.346,
+    "acceptedSecondaryBaselineMedianEngineSeconds": 4.049,
+    "secondaryObservedRegressionPercent": 7.33514448011855,
+    "highContentionSecondaryEngineSecondsExcluded": [6.398]
+  },
+  "rollbackComparison": {
+    "primaryEngineSecondsExcluded": [12.736, 12.795, 12.899, 13.845],
+    "hostLoadAverage": 44.84,
+    "reason": "managed symbolic workers entered a roughly 30-core phase, so the rollback batch cannot serve as a same-load wall-time comparison"
+  },
+  "businessContract": {
+    "primaryTotalReturn": 0.9219861819172002,
+    "primaryTradeCount": 26088,
+    "primaryCanonicalSha256": "b42fea66237d06eadb24f6b8c9e2760e7319fe3699f315b99e01f433ef2aa234",
+    "primaryResultStoreSha256": "92343fb369fea68b2544b654151c5c43a935940580b14afbe8eefb3844f72a54",
+    "secondaryTotalReturn": 1.1342962298106998,
+    "secondaryTradeCount": 19404,
+    "secondaryCanonicalSha256": "0dbd3fad624097c673c4a5ec2f545f95e9c21d1d5337bb2b48ffeb22b16cb2b9",
+    "secondaryResultStoreSha256": "416d2f87241fb4c6b917f6aeecb588f82f6e7d51a103f4c53a74d11971f16839",
+    "resultConsistent": true,
+    "terminalAuditStatus": "clean"
+  },
+  "profile": {
+    "allThreadRunId": "btr_1788549525151_3404548_13",
+    "allThreadRunEngineSeconds": 4.957,
+    "trimMatchesPercent": 2.0,
+    "typedBaselineSingleWorkerProfileTrimMatchesPercent": 2.85,
+    "comparisonLimited": true,
+    "reason": "the two profiles used different thread attachment sets and cannot establish an end-to-end speedup"
+  },
+  "remoteArtifacts": [
+    "/srv/fidc/canonical/run/fidc-private/evidence/cached-symbol-board-primary-20260905.json",
+    "/srv/fidc/canonical/run/fidc-private/evidence/cached-symbol-board-secondary-20260905.json",
+    "/srv/fidc/canonical/run/fidc-private/evidence/cached-symbol-board-rollback-primary-20260905.json",
+    "/srv/fidc/canonical/run/fidc-private/evidence/cached-symbol-board-all-threads-profile-20260905/perf.data"
+  ],
+  "acceptance": {
+    "status": "rejected_and_removed",
+    "reason": "the candidate preserved correctness but did not improve both five-year strategies, and the later rollback batch was too heavily contended to overturn the cross-strategy regression"
+  }
+}

docs/evidence/calendar-major-series-boundary-index-20260905.json

@@ -0,0 +1,85 @@
+{
+  "schemaVersion": "fidc-calendar-major-series-boundary-index/v1",
+  "measuredAt": "2026-09-05T02:24:00+08:00",
+  "host": "192.168.31.177",
+  "engineCommit": "abe4fed4527e07ad7ae4464e574fa582150e306e",
+  "serviceCommit": "9fd5a9e6d5668af57f6942fc3c4127953545d9c6",
+  "runnerBinarySha256": "a4135986b69625a0f3443e9091754874b3f9d65e9913424298c5d8fedf733985",
+  "implementation": {
+    "description": "transpose immutable decision/current market-series boundary indexes from symbol-major vectors to calendar-major contiguous symbol rows",
+    "logicalEntryCountChanged": false,
+    "entryType": "u32",
+    "missingSentinel": "u32::MAX",
+    "factorValuesCached": false,
+    "selectionResultsCached": false,
+    "pitSemanticsChanged": false
+  },
+  "primaryFiveYearContract": {
+    "startDate": "2021-08-23",
+    "endDate": "2026-08-28",
+    "frequency": "1d",
+    "matchingType": "next_bar_open",
+    "totalReturn": 0.9219861819172002,
+    "tradeCount": 26088,
+    "canonicalSha256": "b42fea66237d06eadb24f6b8c9e2760e7319fe3699f315b99e01f433ef2aa234",
+    "resultStoreSha256": "92343fb369fea68b2544b654151c5c43a935940580b14afbe8eefb3844f72a54",
+    "processCold": {
+      "totalSeconds": 18.605,
+      "dataSeconds": 12.849,
+      "dataSetConstructSeconds": 4.052,
+      "marketIndexBuildSeconds": 2.396,
+      "engineSeconds": 5.06
+    },
+    "processHotEngineSeconds": [5.297, 5.227, 5.029, 5.012, 5.202],
+    "processHotMedianEngineSeconds": 5.202,
+    "fieldProjectionBaselineMedianEngineSeconds": 5.356,
+    "observedMedianImprovementPercent": 2.875280059746078,
+    "resultConsistent": true,
+    "terminalAuditStatus": "clean"
+  },
+  "secondaryFiveYearContract": {
+    "totalReturn": 1.1342962298106998,
+    "tradeCount": 19404,
+    "canonicalSha256": "0dbd3fad624097c673c4a5ec2f545f95e9c21d1d5337bb2b48ffeb22b16cb2b9",
+    "resultStoreSha256": "416d2f87241fb4c6b917f6aeecb588f82f6e7d51a103f4c53a74d11971f16839",
+    "engineSeconds": [4.646, 4.87, 4.886, 5.056],
+    "medianEngineSeconds": 4.878,
+    "resultConsistent": true,
+    "terminalAuditStatus": "clean"
+  },
+  "profile": {
+    "runId": "btr_1788546155152_3120069_10",
+    "engineSeconds": 5.211,
+    "eventCycles": 14556215580,
+    "seriesEndIndexPresentInTopProfile": false,
+    "fieldProjectionBaselineSeriesEndIndexPercent": 4.74,
+    "stockStateSelfPercent": 15.19,
+    "adjustedCloseMovingAveragePercent": 6.24,
+    "numericVmPercent": 6.77
+  },
+  "memory": {
+    "serviceCgroupCurrentBytes": 11493711872,
+    "serviceCgroupPeakBytes": 11495387136,
+    "processRssKiB": 11212504,
+    "processAnonymousKiB": 11196148,
+    "fieldProjectionBaselineCgroupCurrentBytes": 11485425664,
+    "observedCgroupIncreaseBytes": 8286208
+  },
+  "testGate": {
+    "coreUnitTotal": 421,
+    "corePassed": 415,
+    "ignoredManualBenchmarks": 6,
+    "failed": 0,
+    "integrationSuitesPassed": true
+  },
+  "remoteArtifacts": [
+    "/srv/fidc/canonical/run/fidc-private/evidence/calendar-major-series-boundary-primary-20260905.json",
+    "/srv/fidc/canonical/run/fidc-private/evidence/calendar-major-series-boundary-secondary-20260905.json",
+    "/srv/fidc/canonical/run/fidc-private/evidence/calendar-major-series-boundary-profile-20260905/perf.data",
+    "/srv/fidc/canonical/run/fidc-private/evidence/calendar-major-series-boundary-profile-20260905/perf-report.txt"
+  ],
+  "acceptance": {
+    "status": "accepted_generic_calendar_major_boundary_index",
+    "reason": "both five-year contracts preserve exact outputs and clean terminal audits, the primary hot median improves, the former boundary lookup leaves the top profile, and steady-state memory remains effectively unchanged"
+  }
+}

docs/evidence/callback-target-20260914/acceptance.json

@@ -0,0 +1,191 @@
+{
+  "verified_at": "2026-09-13T22:22:38.597836+00:00",
+  "tag": "v2026.9.14.5",
+  "processes": {
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+      "journal_since": "2026-09-13T22:15:53.225719+00:00",
+      "journal_lines": 54,
+      "error_lines": 0
+    },
+    "fidc-trading-control-highmem177.service": {
+      "pid": 3697497,
+      "sha256": "a8f62ba74caf7ce2f5ba9cc6f67f41c844dee3747852611051c8dfb7b36295a3",
+      "journal_since": "2026-09-13T22:21:09.122548+00:00",
+      "journal_lines": 5,
+      "error_lines": 0
+    },
+    "fidc-market-data-highmem177.service": {
+      "pid": 3697498,
+      "sha256": "89395ab4c9e11274f171f4386f88949ce616fe45d15aae9a829216d53ed11db7",
+      "journal_since": "2026-09-13T22:21:09.122548+00:00",
+      "journal_lines": 5,
+      "error_lines": 0
+    },
+    "fidc-strategy-runtime-highmem177.service": {
+      "pid": 3697688,
+      "sha256": "041a0103d2c46c55221d169965ece9fdacee3905abc0d46edd9c8a2a86f6cd54",
+      "journal_since": "2026-09-13T22:21:09.122548+00:00",
+      "journal_lines": 5,
+      "error_lines": 0
+    },
+    "fidc-paper-trading-highmem177.service": {
+      "pid": 3697792,
+      "sha256": "8460008f712810f7d3876b9f2274aef88f82d46cd33e1593dbd0361f6d158b75",
+      "journal_since": "2026-09-13T22:21:09.122548+00:00",
+      "journal_lines": 6,
+      "error_lines": 0
+    },
+    "fidc-live-trading-highmem177.service": {
+      "pid": 3697762,
+      "sha256": "e89d6ba68655a5d4a164793ad67a9003cf2c49733063018497339930feafaac3",
+      "journal_since": "2026-09-13T22:21:09.122548+00:00",
+      "journal_lines": 6,
+      "error_lines": 0
+    }
+  },
+  "source": {
+    "commit": "d5b682c6d097",
+    "pid": 1700096,
+    "loaded_at": "2026-09-12T03:57:06.665536+00:00",
+    "source_stale": false,
+    "loaded_server_sha256": "ef827ce6b95e0ea63047a0068af2677633716e0a5d63cf350de6c91a3413e352"
+  },
+  "source_checkouts": {
+    "fidc-backtest-engine": {
+      "head": "9a54156df94cfbf11a1e6335ec6ef5449bd6ac17",
+      "runtime_commit": "81acc5422878abc855fca72b35766ffad6159200",
+      "tracked_dirty": false
+    },
+    "fidc-backtest-service": {
+      "head": "5ec8dc86d99736a0c0140440bd039d11e118c1c6",
+      "runtime_commit": "e81bf47806f5ac4ae4798bb5f5955a56638f754c",
+      "tracked_dirty": false
+    },
+    "fidc-trading-platform": {
+      "head": "94f99d20f49f6cd1810996706cb94f610c302385",
+      "runtime_commit": "94f99d20f49f6cd1810996706cb94f610c302385",
+      "tracked_dirty": false
+    },
+    "omniquant": {
+      "head": "6a2b2604b40505fa754453307c517fef60743426",
+      "runtime_commit": "6a2b2604b40505fa754453307c517fef60743426",
+      "tracked_dirty": false
+    }
+  },
+  "ui_unchanged": {
+    "commit": "6a2b2604b40505fa754453307c517fef60743426",
+    "pid": 3089476
+  },
+  "http_cases": [
+    {
+      "name": "manual_first",
+      "run_id": "btr_req_44f1bb067559946ef22941a0c425ed53e47515e04b399e20",
+      "status": "succeeded",
+      "canonical_sha256": "0830216850b64d6e83291e072b31a9989f179915ee3341a75a77c73d1f9081a3",
+      "trade_count": 10,
+      "holding_count": 4,
+      "final_equity": 9706248.648662,
+      "old_result_unchanged": true
+    },
+    {
+      "name": "automatic_first",
+      "run_id": "btr_req_078f129ed46b55ba72b47605983a00ae3eef14b1995e1237",
+      "status": "succeeded",
+      "canonical_sha256": "c75cabcc03760f415bb664d20060e81c620d7a0201dd348ea71f75c932571de7",
+      "trade_count": 10,
+      "holding_count": 4,
+      "final_equity": 9706248.648662,
+      "old_result_unchanged": true
+    },
+    {
+      "name": "stock24",
+      "run_id": "btr_req_ef37b8ea403f489e4798d2878e0ef85966ace550f6b4f3c4",
+      "status": "succeeded",
+      "canonical_sha256": "270b403542ab41290c3d6e027b89cdab24dd41a8e2851d8786b33daa51e0051f",
+      "trade_count": 51,
+      "holding_count": 21,
+      "final_equity": 9685563.876924999,
+      "old_result_unchanged": true
+    }
+  ],
+  "durable_events": [
+    {
+      "run_id": "btr_req_44f1bb067559946ef22941a0c425ed53e47515e04b399e20",
+      "count": 27,
+      "unique_keys": 27,
+      "days": 5
+    },
+    {
+      "run_id": "btr_req_078f129ed46b55ba72b47605983a00ae3eef14b1995e1237",
+      "count": 18,
+      "unique_keys": 18,
+      "days": 5
+    },
+    {
+      "run_id": "btr_req_ef37b8ea403f489e4798d2878e0ef85966ace550f6b4f3c4",
+      "count": 32,
+      "unique_keys": 32,
+      "days": 5
+    },
+    {
+      "run_id": "btr_req_a3c3dfe5cd81e27e565064a65665f561c60adebdc6c9c9b4",
+      "count": 27,
+      "unique_keys": 27,
+      "days": 5
+    }
+  ],
+  "trading_state": {
+    "paper": {
+      "configuration": {
+        "count": 3,
+        "hash": "93f3224edef59c381164e0236529dacc"
+      },
+      "active": {
+        "claims": 0,
+        "orders": 0
+      }
+    },
+    "live": {
+      "configuration": {
+        "count": 0,
+        "hash": "d41d8cd98f00b204e9800998ecf8427e"
+      },
+      "active": {
+        "claims": 0,
+        "orders": 1,
+        "today_orders": 0,
+        "orders_hash": "d4b56fbf3a541a41a383ad4e48891bb8",
+        "route_mode": "disabled"
+      }
+    }
+  },
+  "manual_facts_unchanged": {
+    "paper": {
+      "shadow_configurations": 0,
+      "shadow_runs": 0,
+      "manual_count": 3,
+      "manual_hash": "82572901ac0b5fdb4d8b984f71e1763d",
+      "migrations_hash": "21d711b2ee52d2d66a8be4e99b179190",
+      "new_orders": 0
+    },
+    "live": {
+      "shadow_configurations": 0,
+      "shadow_runs": 0,
+      "manual_count": 0,
+      "manual_hash": "d41d8cd98f00b204e9800998ecf8427e",
+      "migrations_hash": "610528d4f350309379c9398c4ea43f66",
+      "new_orders": 0
+    }
+  },
+  "broker_submission": false,
+  "linux_core_tests": {
+    "passed": 834,
+    "failed": 0,
+    "ignored": 9,
+    "log": "/srv/fidc/canonical/run/fidc-private/evidence/callback-candidate-6qumwky7/linux-core-tests.log"
+  },
+  "scope": "Callback and pending-target release verification; historical simulation only. Full manual shadow replay remains incomplete.",
+  "native_replays": 6
+}

docs/evidence/compact-adjusted-close-rejection-20260905.json

@@ -0,0 +1,46 @@
+{
+  "schemaVersion": "fidc-compact-adjusted-close-rejection/v1",
+  "measuredAt": "2026-09-05T04:29:00+08:00",
+  "host": "192.168.31.177",
+  "candidateCommit": "ab87e18",
+  "revertCommit": "0c2681e6996800eae5f3b881e75a01e7a078863f",
+  "restoredRunnerBinarySha256": "3e69af42e41321d31c69b552cf22d7033ce1ea8d94305a32e32461148cdbfc60",
+  "candidate": {
+    "description": "replace two Vec<Option<f64>> adjusted-close arrays with f64 arrays using NaN as the internal missing sentinel",
+    "theoreticalSteadyStateMemoryReductionBytesPerMarketRow": 16,
+    "hotEngineSeconds": [5.119, 5.168, 5.516, 5.332, 4.69],
+    "hotMedianEngineSeconds": 5.168
+  },
+  "acceptedBaseline": {
+    "historicalMedianEngineSeconds": 3.896,
+    "sameWindowRollbackEngineSeconds": [4.144, 4.169],
+    "sameWindowRollbackMedianEngineSeconds": 4.169
+  },
+  "observed": {
+    "regressionVersusHistoricalBaselinePercent": 32.64887063655031,
+    "regressionVersusSameWindowRollbackPercent": 23.962580954665402
+  },
+  "businessContract": {
+    "totalReturn": 0.9219861819172002,
+    "tradeCount": 26088,
+    "canonicalSha256": "b42fea66237d06eadb24f6b8c9e2760e7319fe3699f315b99e01f433ef2aa234",
+    "resultStoreSha256": "92343fb369fea68b2544b654151c5c43a935940580b14afbe8eefb3844f72a54",
+    "resultConsistent": true,
+    "terminalAuditStatus": "clean"
+  },
+  "testGate": {
+    "coreUnitTotal": 422,
+    "corePassed": 416,
+    "ignoredManualBenchmarks": 6,
+    "failed": 0,
+    "integrationSuitesPassed": true
+  },
+  "remoteArtifacts": [
+    "/srv/fidc/canonical/run/fidc-private/evidence/compact-adjusted-close-primary-20260905.json",
+    "/srv/fidc/canonical/run/fidc-private/evidence/compact-adjusted-close-rollback-primary-20260905.json"
+  ],
+  "acceptance": {
+    "status": "rejected_and_removed",
+    "reason": "the memory-dense NaN representation materially slowed the hottest moving-average path despite preserving exact business results"
+  }
+}

docs/evidence/compact-daily-stock-state-cache-key-20260905.json

@@ -0,0 +1,79 @@
+{
+  "schemaVersion": "fidc-compact-daily-stock-state-cache-key/v1",
+  "measuredAt": "2026-09-05T01:20:00+08:00",
+  "host": "192.168.31.177",
+  "engineCommit": "6f81e1940ad4ddd4eefbe12c056be28f2b64d127",
+  "runnerBinarySha256": "c2d9101a89b71b51051b8762375476518e40d40e29a8ee0f9615ac4c55fcdb0a",
+  "implementation": {
+    "description": "remove the redundant execution date from stock-state cache keys because the complete cache is already cleared before the active date changes",
+    "keyBefore": "(execution_date, factor_date, symbol_id, execution_time, use_intraday_quote)",
+    "keyAfter": "(factor_date, symbol_id, execution_time, use_intraday_quote)",
+    "crossDateResetTested": true,
+    "cachedFactorValues": false,
+    "cachedSelectionResults": false,
+    "pitSemanticsChanged": false
+  },
+  "primaryFiveYearContract": {
+    "startDate": "2021-08-23",
+    "endDate": "2026-08-28",
+    "frequency": "1d",
+    "matchingType": "next_bar_open",
+    "totalReturn": 0.9219861819172002,
+    "tradeCount": 26088,
+    "canonicalSha256": "b42fea66237d06eadb24f6b8c9e2760e7319fe3699f315b99e01f433ef2aa234",
+    "resultStoreSha256": "92343fb369fea68b2544b654151c5c43a935940580b14afbe8eefb3844f72a54",
+    "hotEngineSeconds": [5.262, 5.734, 5.89, 5.612, 6.301],
+    "hotMedianEngineSeconds": 5.734,
+    "sharedOrderBaselineMedianEngineSeconds": 5.742,
+    "observedMedianImprovementPercent": 0.13932427725531174,
+    "resultConsistent": true,
+    "terminalAuditStatus": "clean"
+  },
+  "secondaryFiveYearContract": {
+    "totalReturn": 1.1342962298106998,
+    "tradeCount": 19404,
+    "canonicalSha256": "0dbd3fad624097c673c4a5ec2f545f95e9c21d1d5337bb2b48ffeb22b16cb2b9",
+    "resultStoreSha256": "416d2f87241fb4c6b917f6aeecb588f82f6e7d51a103f4c53a74d11971f16839",
+    "engineSeconds": [5.889, 5.853, 5.342],
+    "medianEngineSeconds": 5.853,
+    "resultConsistent": true,
+    "terminalAuditStatus": "clean"
+  },
+  "coldDataObservation": {
+    "runId": "btr_1788542108713_2936456_0",
+    "totalSeconds": 54.502,
+    "dataSeconds": 46.584,
+    "engineSeconds": 7.011,
+    "sourceQuerySeconds": 17.585,
+    "datasetConstructSeconds": 12.913,
+    "marketIndexBuildSeconds": 7.671,
+    "adjustmentValidationSeconds": 1.855,
+    "hotDataSecondsRange": [0.002, 0.006],
+    "performanceComparisonExcluded": true
+  },
+  "memoryObservation": {
+    "processRssKiB": 11136672,
+    "processAnonymousKiB": 11120428,
+    "cgroupCurrentBytes": 12445237248,
+    "cgroupFileCacheBytes": 1029632000,
+    "cgroupActiveFileBytes": 1009012736,
+    "duplicateDataSetLeakObserved": false,
+    "note": "the gap between process RSS and cgroup memory is reclaimable file-page cache rather than a second resident DataSet"
+  },
+  "testGate": {
+    "coreUnitTotal": 420,
+    "corePassed": 414,
+    "ignoredManualBenchmarks": 6,
+    "failed": 0,
+    "integrationSuitesPassed": true
+  },
+  "remoteArtifacts": [
+    "/srv/fidc/canonical/run/fidc-private/evidence/compact-stock-cache-key-20260905.json",
+    "/srv/fidc/canonical/run/fidc-private/evidence/compact-stock-cache-key-secondary-20260905.json"
+  ],
+  "acceptance": {
+    "status": "accepted_structural_compaction_no_regression",
+    "endToEndSpeedupClaimed": false,
+    "reason": "the key is smaller, the cross-date isolation test passes, both five-year strategies retain exact results, and observed wall time is neutral to slightly better"
+  }
+}

docs/evidence/current-rolling-boundary-reuse-20260904.json

@@ -0,0 +1,74 @@
+{
+  "schemaVersion": "fidc-current-rolling-boundary-reuse-ab/v1",
+  "measuredAt": "2026-09-04T15:17:49Z",
+  "host": "192.168.31.177",
+  "engineCommit": "52b07be19bdd1597e5b412b5a549e57640efa415",
+  "implementation": {
+    "description": "resolve the current market-series end once per stock state and reuse the integer boundary for literal stock rolling_mean_current calls",
+    "cachedFactorValues": false,
+    "cachedStrategyResults": false,
+    "additionalHeapCollectionsPerStock": 0,
+    "fallback": "dynamic or non-market fields retain the original date and factor-series lookup",
+    "pitSemanticsChanged": false,
+    "adjustmentSemanticsChanged": false
+  },
+  "componentBenchmark": {
+    "iterations": 100000,
+    "helperCallsPerIteration": 5,
+    "repeatedLookupSeconds": 0.009142143,
+    "reusedBoundarySeconds": 0.006728638,
+    "speedup": 1.3586914617787433,
+    "equal": true
+  },
+  "testGate": {
+    "total": 418,
+    "passed": 413,
+    "ignoredManualBenchmarks": 5,
+    "failed": 0
+  },
+  "backtestEvidence": {
+    "runId": "btr_1788535029326_2441112_5",
+    "startDate": "2021-08-23",
+    "endDate": "2026-08-28",
+    "frequency": "1d",
+    "matchingType": "next_bar_open",
+    "totalSeconds": 7.509,
+    "engineSeconds": 6.494,
+    "totalReturn": 0.9219861819172002,
+    "tradeCount": 26088,
+    "canonicalSha256": "b42fea66237d06eadb24f6b8c9e2760e7319fe3699f315b99e01f433ef2aa234",
+    "resultStoreSha256": "92343fb369fea68b2544b654151c5c43a935940580b14afbe8eefb3844f72a54"
+  },
+  "secondaryStrategyEvidence": {
+    "description": "same frozen bundle and execution contract with target positions changed from 30 to 20",
+    "runId": "btr_1788535290995_2441112_6",
+    "totalSeconds": 9.081,
+    "engineSeconds": 8.367,
+    "dataSeconds": 0.003,
+    "totalReturn": 1.1342962298106998,
+    "tradeCount": 19404,
+    "tradeDateCount": 1216,
+    "canonicalSha256": "0dbd3fad624097c673c4a5ec2f545f95e9c21d1d5337bb2b48ffeb22b16cb2b9",
+    "resultStoreSha256": "416d2f87241fb4c6b917f6aeecb588f82f6e7d51a103f4c53a74d11971f16839",
+    "matchesPreOptimizationBusinessResult": true
+  },
+  "artifacts": [
+    {
+      "path": "/srv/fidc/canonical/run/fidc-private/evidence/current-rolling-boundary-profile-20260904/perf.data",
+      "sha256": "be9f6e04c01a98cb834bc3f207359dc17555e0e660e178d552b525722a13873a"
+    },
+    {
+      "path": "/srv/fidc/canonical/run/fidc-private/evidence/current-rolling-boundary-profile-20260904/perf-report.txt",
+      "sha256": "6f4e1e4370ce996fcf7308a7a723469b417d8c03156eb43b5a26a5fb42c42511"
+    },
+    {
+      "path": "/srv/fidc/canonical/run/fidc-private/evidence/current-rolling-boundary-profile-20260904/run.json",
+      "sha256": "fee9f104d72d8918cdcd7660d7cd40dced9a84edcabcd68e89588ce5690523a5"
+    }
+  ],
+  "acceptance": {
+    "status": "accepted_component_improvement_end_to_end_no_regression",
+    "endToEndSpeedupClaimed": false,
+    "reason": "the component result is positive and exact, while concurrent non-FIDC tan load and symbolic phases make cross-build wall-time medians non-comparable"
+  }
+}

docs/evidence/daily-snapshot-view-stock-state-rejection-20260905.json

@@ -0,0 +1,71 @@
+{
+  "schemaVersion": "fidc-daily-snapshot-view-stock-state-rejection/v1",
+  "measuredAt": "2026-09-05T00:30:00+08:00",
+  "host": "192.168.31.177",
+  "candidateCommit": "1df0081479b93a051f9a40d2acf7060d0eb6929d",
+  "revertCommit": "1f10a6bb3decdd40c77397a7596c6f23a9f90a18",
+  "candidate": {
+    "description": "carry symbol_id in EligibleUniverseSnapshot and pass pre-resolved execution/factor DailySnapshotView values into stock-state construction",
+    "componentBenchmark": {
+      "symbols": 6000,
+      "rounds": 200,
+      "dateMapLookupSeconds": 0.020211,
+      "dailyViewLookupSeconds": 0.006410,
+      "speedup": 3.1530421216848675,
+      "equal": true
+    },
+    "fiveYearRuns": [
+      {"runId": "btr_1788538826285_2693431_0", "engineSeconds": 8.075},
+      {"runId": "btr_1788538854544_2693431_1", "engineSeconds": 8.488},
+      {"runId": "btr_1788538868210_2693431_2", "engineSeconds": 10.455},
+      {"runId": "btr_1788538887159_2693431_3", "engineSeconds": 10.672},
+      {"runId": "btr_1788538903432_2693431_4", "engineSeconds": 11.284},
+      {"runId": "btr_1788538920072_2693431_5", "engineSeconds": 9.985}
+    ],
+    "hotMedianEngineSeconds": 10.455,
+    "runnerBinarySha256": "cbe20d1bd5c5e02372bd310107a1f4e41aaa9f256b3c31f79c6ad000648d1854"
+  },
+  "restored": {
+    "fiveYearRuns": [
+      {"runId": "btr_1788539286281_2739751_0", "engineSeconds": 7.118},
+      {"runId": "btr_1788539313845_2739751_1", "engineSeconds": 6.702},
+      {"runId": "btr_1788539325631_2739751_2", "engineSeconds": 7.093},
+      {"runId": "btr_1788539338757_2739751_3", "engineSeconds": 6.509}
+    ],
+    "hotMedianEngineSeconds": 6.702,
+    "candidateRegressionPercent": 55.99820948970456,
+    "runnerBinarySha256": "e33dd75aa7b481975c0991cf634d07900cdefa51756802e28e64f18b980a83dc",
+    "matchesPreCandidateRunnerSha256": true
+  },
+  "businessContract": {
+    "startDate": "2021-08-23",
+    "endDate": "2026-08-28",
+    "frequency": "1d",
+    "matchingType": "next_bar_open",
+    "totalReturn": 0.9219861819172002,
+    "tradeCount": 26088,
+    "canonicalSha256": "b42fea66237d06eadb24f6b8c9e2760e7319fe3699f315b99e01f433ef2aa234",
+    "resultStoreSha256": "92343fb369fea68b2544b654151c5c43a935940580b14afbe8eefb3844f72a54",
+    "allRunsConsistent": true
+  },
+  "profile": {
+    "candidateRunId": "btr_1788538966659_2693431_6",
+    "candidateEngineSeconds": 10.566,
+    "stockStatePercent": 28.14,
+    "adjustedCloseMovingAveragePercent": 8.27,
+    "stableSortPercent": 5.46,
+    "mallocPercent": 5.12,
+    "note": "The removed map lookup symbols disappeared, but their component savings were too small to offset the larger universe row and generalized optional-view state path."
+  },
+  "remoteArtifacts": [
+    "/srv/fidc/canonical/run/fidc-private/evidence/daily-view-after-20260905.json",
+    "/srv/fidc/canonical/run/fidc-private/evidence/daily-view-profile-20260905/perf.data",
+    "/srv/fidc/canonical/run/fidc-private/evidence/daily-view-profile-20260905/perf-report.txt",
+    "/srv/fidc/canonical/run/fidc-private/evidence/daily-view-reverted-20260905.json"
+  ],
+  "decision": {
+    "status": "rejected_and_removed",
+    "reason": "a positive lookup microbenchmark did not translate to end-to-end performance; the same frozen five-year workload became about 56 percent slower",
+    "productionEngineCommit": "1f10a6bb3decdd40c77397a7596c6f23a9f90a18"
+  }
+}

docs/evidence/date-numeric-vm-20260906.json

@@ -0,0 +1,90 @@
+{
+  "schemaVersion": "fidc.date-numeric-vm-performance/v1",
+  "generatedAt": "2026-09-06T18:08:00+08:00",
+  "host": "192.168.31.177",
+  "change": {
+    "engineCommit": "bc228980afc02cde483b1a6fe69da4048120cbc4",
+    "serviceCommit": "bac07c208c652a717d312e332d44f90218cc1247",
+    "runnerBinarySha256": "46684dea71273466f8ba0f6351eb6f6adf694393ff23ee278054e3b6b71acbe5",
+    "description": "Valid ISO date literals directly compared with trade_date, current_date, date, decision_date or execution_date compile to the numeric bytecode VM as YYYYMMDD keys. All other strings remain on the Rhai path. Numeric VM floating comparisons now match Rhai relative epsilon semantics."
+  },
+  "correctnessBug": {
+    "previousBehavior": "Numeric VM used exact f64 comparisons while Rhai used relative f64::EPSILON comparisons, so an expression could change result depending on whether it compiled to VM or fell back to Rhai.",
+    "capturedExample": "11.699999999999998 == 11.7",
+    "previousVmResult": false,
+    "rhaiAndFixedVmResult": true,
+    "operatorsAligned": [
+      "==",
+      "!=",
+      "<",
+      "<=",
+      ">",
+      ">="
+    ]
+  },
+  "request": {
+    "sourceRunId": "btr_1788681250851_3170500_1",
+    "startDate": "2023-01-03",
+    "endDate": "2025-12-31",
+    "frequency": "1d",
+    "matchingType": "next_bar_open",
+    "initialCash": 10000000.0,
+    "benchmark": "000852.SH",
+    "frozenBundleReused": true
+  },
+  "baseline": {
+    "engineCommit": "840473362d7032b80d551ba5935723ee823dffa1",
+    "hotEngineMedianSeconds": 5.049,
+    "hotTotalMedianSeconds": 5.796
+  },
+  "candidate": {
+    "coldRun": {
+      "runId": "btr_1788688964051_3295756_0",
+      "totalSeconds": 21.341,
+      "dataSeconds": 7.904,
+      "engineSeconds": 12.519,
+      "classification": "post-deploy process cold and concurrent host-load observation; retained explicitly and excluded from the hot median"
+    },
+    "hotRunIds": [
+      "btr_1788688990229_3295756_1",
+      "btr_1788689001276_3295756_2",
+      "btr_1788689030863_3295756_3",
+      "btr_1788689059131_3295756_4"
+    ],
+    "hotEngineSeconds": [
+      4.963,
+      4.934,
+      4.854,
+      4.859
+    ],
+    "hotEngineMedianSeconds": 4.8965,
+    "hotTotalSeconds": [
+      5.901,
+      5.619,
+      5.738,
+      5.539
+    ],
+    "hotTotalMedianSeconds": 5.6785,
+    "incrementalHotEngineImprovementPercent": 3.0204,
+    "incrementalHotTotalImprovementPercent": 2.0273
+  },
+  "resultParity": {
+    "totalReturn": -0.615167693429,
+    "tradeCount": 4961,
+    "canonicalResultSha256": "f9c26271d4f2096e51429b6106740f600757823789bf6447cd0c524f702f0836",
+    "resultStoreSha256": "56042bd25bd4261e41e8237c9f5ead580b782d897baae58c8e4436f331a1d91f",
+    "allFiveRunsEqualBaseline": true,
+    "returnDelta": 0.0,
+    "tradeCountDelta": 0
+  },
+  "validation": {
+    "numericVmTests": "4 passed, 1 ignored",
+    "capturedRegressionTest": "platform_helpers_support_generic_rolling_stats_and_normalized_factors",
+    "workspaceTests": "423 passed, 6 ignored plus all integration tests passed",
+    "invalidDateLiteralFallsBack": true,
+    "nonDateStringFallsBack": true,
+    "helperDateArgumentPreserved": true,
+    "runtimeUser": "boris",
+    "serviceHealth": "ok"
+  }
+}

docs/evidence/decision-buy-denial-foundation-20260908.json

@@ -0,0 +1,18 @@
+{
+  "date": "2026-09-08",
+  "host": "192.168.31.177",
+  "candidateCommit": "fa6f189",
+  "unitTestsPassed": 453,
+  "integrationTestsPassed": 122,
+  "ignoredManualBenchmarks": 8,
+  "failed": 0,
+  "backtestRunnerCargoCheck": "passed",
+  "covered": ["top-up rejection", "sell permission preserved", "decision context restored", "existing pending order not rewritten", "next-open target direction determined by actual price"],
+  "deployed": false,
+  "factorCompilerConnected": false,
+  "paperLivePlanConnected": false,
+  "orderAmendmentAcceptanceComplete": false,
+  "brokerAmendmentTestsPassed": true,
+  "amendmentPolicy": "Deny buy quantity increases or limit-price increases; allow validated reductions; preserve original state and queue order on rejection.",
+  "realStrategyAcceptanceComplete": false
+}

docs/evidence/duplicate-rolling-lookback-rejection-20260905.json

@@ -0,0 +1,78 @@
+{
+  "schemaVersion": "fidc-duplicate-rolling-lookback-rejection/v1",
+  "measuredAt": "2026-09-05T01:05:00+08:00",
+  "host": "192.168.31.177",
+  "candidateCommits": [
+    "1f02e78b2400c73c5f05351b0beff16d6c724e2a",
+    "e469b0ddf4aa3bb9fe69b785b51ce6c7cf960b90"
+  ],
+  "revertCommit": "5b2a03d416a7bd709680a1adf52013e3eadc199a",
+  "candidate": {
+    "description": "reuse equal lookback values only inside one AdjustedCloseSeries moving_averages_at_end call",
+    "validComponentBenchmark": {
+      "samples": 6,
+      "iterationsPerSample": 3000000,
+      "lookbacks": [1, 2, 3, 1, 2, 3, 1],
+      "repeatedSeconds": 1.40643611,
+      "reusedSeconds": 0.853281932,
+      "speedup": 1.6482666012902287,
+      "checksum": 1458000000.0
+    },
+    "hardwareCounters": {
+      "runId": "btr_1788541184367_2862338_11",
+      "engineSeconds": 8.423,
+      "taskClockMilliseconds": 9030.56,
+      "cycles": 22931608591,
+      "instructions": 28199702874,
+      "branches": 5010114942,
+      "branchMisses": 23586244,
+      "cacheReferences": 268428800,
+      "cacheMisses": 146632717
+    }
+  },
+  "restoredBaseline": {
+    "warmupRunId": "btr_1788541416661_2890172_0",
+    "warmupEngineSeconds": 5.581,
+    "hardwareCounters": {
+      "runId": "btr_1788541455567_2890172_1",
+      "engineSeconds": 6.078,
+      "taskClockMilliseconds": 6643.43,
+      "cycles": 16773013609,
+      "instructions": 28218847364,
+      "branches": 5024236708,
+      "branchMisses": 23209586,
+      "cacheReferences": 266316407,
+      "cacheMisses": 81226408
+    },
+    "runnerBinarySha256": "188269bf0c2ee65d6c11ed37ddddfdaf86695941e8123f69f950054bea39796e"
+  },
+  "comparison": {
+    "candidateInstructionReductionPercent": 0.06784229696471904,
+    "candidateBranchReductionPercent": 0.2810720756590066,
+    "materialSystemImprovementProven": false,
+    "wallTimeComparable": false,
+    "reason": "host-wide thermal and external workload changes produced materially different cache-miss and clock conditions; the instruction reduction itself is below one tenth of one percent"
+  },
+  "businessContract": {
+    "startDate": "2021-08-23",
+    "endDate": "2026-08-28",
+    "frequency": "1d",
+    "matchingType": "next_bar_open",
+    "totalReturn": 0.9219861819172002,
+    "tradeCount": 26088,
+    "canonicalSha256": "b42fea66237d06eadb24f6b8c9e2760e7319fe3699f315b99e01f433ef2aa234",
+    "resultStoreSha256": "92343fb369fea68b2544b654151c5c43a935940580b14afbe8eefb3844f72a54",
+    "allRunsConsistent": true
+  },
+  "remoteArtifacts": [
+    "/srv/fidc/canonical/run/fidc-private/evidence/duplicate-lookback-20260905.json",
+    "/srv/fidc/canonical/run/fidc-private/evidence/duplicate-lookback-low-contention-20260905.json",
+    "/srv/fidc/canonical/run/fidc-private/evidence/duplicate-lookback-perf-stat-candidate-20260905/perf-stat.csv",
+    "/srv/fidc/canonical/run/fidc-private/evidence/duplicate-lookback-perf-stat-baseline-20260905/perf-stat.csv"
+  ],
+  "decision": {
+    "status": "rejected_and_removed",
+    "reason": "the valid microbenchmark improves, but the real five-year workload saves only about 0.068 percent instructions and provides no measurable system-level benefit",
+    "productionEngineCommit": "5b2a03d416a7bd709680a1adf52013e3eadc199a"
+  }
+}