fix(stock-pool): separate cumulative condition facts from quote capacity

crates/fidc-core/src/broker.rs

@@ -8324,7 +8324,7 @@ mod tests {
 
     fn limit_test_quote(last_price: f64, bid1: f64, ask1: f64) -> IntradayExecutionQuote {
         let date = chrono::NaiveDate::from_ymd_opt(2025, 1, 2).expect("valid date");
-        IntradayExecutionQuote {
+        IntradayExecutionQuote { observation_kind: Default::default(),
             date,
             symbol: "000001.SZ".to_string(),
             timestamp: date.and_hms_opt(9, 33, 0).expect("valid timestamp"),
@@ -11729,7 +11729,7 @@ mod tests {
             lower_limit: 5.27,
             price_tick: 0.01,
         };
-        let quote = IntradayExecutionQuote {
+        let quote = IntradayExecutionQuote { observation_kind: Default::default(),
             date,
             symbol: symbol.to_string(),
             timestamp: date.and_hms_opt(10, 39, 59).expect("valid timestamp"),

crates/fidc-core/src/broker_stock_pool.rs

@@ -47,8 +47,10 @@ impl<C: CostModel, R: EquityRuleHooks> BrokerSimulator<C, R> {
         data: &DataSet,
         symbols: &BTreeSet<String>,
         execution_clock: Option<NaiveDateTime>,
-    ) -> Result<Vec<pool::MarketSnapshot>, BacktestError> {
-        symbols
+        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(|| {
@@ -134,11 +136,17 @@ impl<C: CostModel, R: EquityRuleHooks> BrokerSimulator<C, R> {
                         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,
-                        Some(quote.volume_delta as f64),
-                        Some(quote.amount_delta),
+                        totals.map(|total| total.0),
+                        totals.map(|total| total.1),
                         Some(quote.bid1),
                         Some(quote.ask1),
                         buy,
@@ -153,13 +161,24 @@ impl<C: CostModel, R: EquityRuleHooks> BrokerSimulator<C, R> {
                     }
                     // 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,
-                        completed.then_some(snapshot.volume as f64),
+                        if completed { Some(Decimal::from(snapshot.volume)) } else { totals.map(|total| total.0) },
+                        amount,
+                        None,
                         None,
-                        Some(price),
-                        Some(price),
                         self.snapshot_execution_price(data, snapshot, OrderSide::Buy, None)?,
                         self.snapshot_execution_price(data, snapshot, OrderSide::Sell, None)?,
                     )
@@ -168,8 +187,8 @@ impl<C: CostModel, R: EquityRuleHooks> BrokerSimulator<C, R> {
                     symbol: symbol.clone(),
                     last_price: decimal(price, "price")?,
                     prev_close: Some(decimal(prev, "prev_close")?),
-                    volume: volume.map(|v| decimal(v, "volume")).transpose()?,
-                    turnover: amount.map(|v| decimal(v, "amount")).transpose()?,
+                    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")),
@@ -182,7 +201,8 @@ impl<C: CostModel, R: EquityRuleHooks> BrokerSimulator<C, R> {
                     sell_sizing_price: Some(decimal(sell_price, "sell_price")?),
                 })
             })
-            .collect()
+            .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> {
@@ -328,8 +348,8 @@ impl<C: CostModel, R: EquityRuleHooks> BrokerSimulator<C, R> {
                     fallback_references.insert(symbol.clone(), reference);
                 }
             }
-            let quotes =
-                self.pool_quote_inputs(date, data, &quote_scope, *global_execution_cursor)?;
+            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)
@@ -448,7 +468,11 @@ impl<C: CostModel, R: EquityRuleHooks> BrokerSimulator<C, R> {
                 Decimal::ZERO,
                 Some(&fee),
             )
-            .map_err(BacktestError::Execution)?;
+            .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)?;

crates/fidc-core/src/data.rs

@@ -284,6 +284,8 @@ pub struct CorporateAction {
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct IntradayExecutionQuote {
+    #[serde(default)]
+    pub observation_kind: QuoteObservationKind,
     #[serde(with = "date_format")]
     pub date: NaiveDate,
     pub symbol: String,
@@ -301,6 +303,14 @@ pub struct IntradayExecutionQuote {
     pub trading_phase: Option<String>,
 }
 
+#[derive(Debug, Clone, Copy, Default, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum QuoteObservationKind {
+    #[default]
+    Unspecified,
+    MinuteBar,
+}
+
 /// Sparse same-day fields layered onto an already-built immutable daily panel.
 ///
 /// These fields do not participate in daily price series, adjustment series,
@@ -1407,6 +1417,7 @@ pub struct DataSet {
     corporate_actions_by_date: Arc<BTreeMap<NaiveDate, Vec<CorporateAction>>>,
     execution_quotes_by_date: Arc<HashMap<NaiveDate, HashMap<String, Vec<IntradayExecutionQuote>>>>,
     execution_quote_dates: Arc<Vec<NaiveDate>>,
+    condition_totals: Arc<std::sync::Mutex<crate::stock_pool_quote_facts::SessionTotalsCache>>,
     order_book_depth_index: Arc<HashMap<(NaiveDate, String), Vec<IntradayOrderBookDepthLevel>>>,
     benchmark_by_date: Arc<BTreeMap<NaiveDate, BenchmarkSnapshot>>,
     market_series_by_symbol: Arc<AHashMap<String, Arc<SymbolPriceSeries>>>,
@@ -1941,6 +1952,7 @@ impl DataSet {
             candidate_row_positions_by_date: Arc::new(candidate_row_positions_by_date),
             corporate_actions_by_date: Arc::new(corporate_actions_by_date),
             execution_quotes_by_date: Arc::new(execution_quotes_by_date),
+            condition_totals: Arc::new(std::sync::Mutex::new(Default::default())),
             execution_quote_dates: Arc::new(execution_quote_dates),
             order_book_depth_index: Arc::new(order_book_depth_index),
             benchmark_by_date: Arc::new(benchmark_by_date),
@@ -2279,6 +2291,15 @@ impl DataSet {
             .unwrap_or(&[])
     }
 
+    pub fn execution_session_totals(&self, symbol: &str, at: NaiveDateTime) -> Result<(rust_decimal::Decimal, rust_decimal::Decimal), String> {
+        let mut cache = self.condition_totals.lock().map_err(|_| "stock_pool_session_prefix_cache_poisoned")?;
+        if cache.date != Some(at.date()) {
+            cache.date = Some(at.date());
+            cache.symbols.clear();
+        }
+        cache.symbols.entry(symbol.into()).or_insert_with(|| crate::stock_pool_quote_facts::MinutePrefix::build(at.date(), symbol, self.execution_quotes_on(at.date(), symbol))).at(at)
+    }
+
     pub fn has_execution_quotes_on_date(&self, date: NaiveDate) -> bool {
         self.execution_quotes_by_date
             .get(&date)
@@ -2451,6 +2472,7 @@ impl DataSet {
     /// Replaces the run-local execution quote layer without touching the
     /// immutable daily panel.
     pub fn replace_execution_quotes(&mut self, quotes: Vec<IntradayExecutionQuote>) -> usize {
+        self.condition_totals = Arc::new(std::sync::Mutex::new(Default::default()));
         let execution_quotes_by_date = build_execution_quote_index(quotes);
         let quote_count = execution_quotes_by_date
             .values()
@@ -2466,6 +2488,7 @@ impl DataSet {
     }
 
     pub fn add_execution_quotes(&mut self, quotes: Vec<IntradayExecutionQuote>) -> usize {
+        self.condition_totals = Arc::new(std::sync::Mutex::new(Default::default()));
         let mut grouped = HashMap::<NaiveDate, HashMap<String, Vec<IntradayExecutionQuote>>>::new();
         for quote in quotes {
             grouped
@@ -2566,6 +2589,7 @@ impl DataSet {
     }
 
     pub fn remove_execution_quotes_on_date(&mut self, date: NaiveDate) -> usize {
+        self.condition_totals = Arc::new(std::sync::Mutex::new(Default::default()));
         let removed = Arc::make_mut(&mut self.execution_quotes_by_date).remove(&date);
         let Some(rows_by_symbol) = removed else {
             return 0;
@@ -2578,6 +2602,7 @@ impl DataSet {
     }
 
     pub fn release_execution_quotes_on_date(&mut self, date: NaiveDate) -> usize {
+        self.condition_totals = Arc::new(std::sync::Mutex::new(Default::default()));
         let row_count = self
             .execution_quotes_by_date
             .get(&date)
@@ -5158,7 +5183,7 @@ mod tests {
             &run_data.execution_quote_dates
         ));
 
-        run_data.add_execution_quotes(vec![IntradayExecutionQuote {
+        run_data.add_execution_quotes(vec![IntradayExecutionQuote { observation_kind: Default::default(),
             date,
             timestamp: NaiveDateTime::parse_from_str("2025-01-02 10:18:00", "%Y-%m-%d %H:%M:%S")
                 .unwrap(),
@@ -5301,7 +5326,7 @@ mod tests {
             vec![benchmark_row("2025-01-02", 12.0)],
         )
         .unwrap();
-        let quote = IntradayExecutionQuote {
+        let quote = IntradayExecutionQuote { observation_kind: Default::default(),
             date,
             symbol: "000001.SZ".to_string(),
             timestamp,
@@ -5403,7 +5428,7 @@ mod tests {
                 successor_cash: None,
             };
             corporate_actions.push(corporate_action.clone());
-            execution_quotes.push(IntradayExecutionQuote {
+            execution_quotes.push(IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: symbols[0].to_string(),
                 timestamp: date.and_hms_opt(10, 18, 0).unwrap(),
@@ -6114,7 +6139,7 @@ mod tests {
             vec![benchmark_row("2025-01-02", 12.0)],
         )
         .unwrap();
-        let quote = |symbol: &str, time: &str| IntradayExecutionQuote {
+        let quote = |symbol: &str, time: &str| IntradayExecutionQuote { observation_kind: Default::default(),
             date,
             timestamp: NaiveDateTime::parse_from_str(
                 &format!("2025-01-02 {time}"),
@@ -6193,7 +6218,7 @@ mod tests {
     #[test]
     fn shared_execution_quote_release_does_not_clone_the_base_map() {
         let date = NaiveDate::parse_from_str("2025-01-02", "%Y-%m-%d").unwrap();
-        let quote = IntradayExecutionQuote {
+        let quote = IntradayExecutionQuote { observation_kind: Default::default(),
             date,
             timestamp: NaiveDateTime::parse_from_str("2025-01-02 10:18:00", "%Y-%m-%d %H:%M:%S")
                 .unwrap(),

crates/fidc-core/src/engine.rs

@@ -746,6 +746,15 @@ where
         if self.execution_quote_loader.is_none() {
             return Ok(());
         }
+        let cumulative_conditions = decision.order_intents.iter().any(|intent| {
+            matches!(intent.unwrapped(), OrderIntent::StockPool { contract }
+                if crate::stock_pool_quote_facts::requires_session_totals(&contract.rule))
+        });
+        if cumulative_conditions && (self.broker.execution_price_field() != PriceField::Close
+            || start_time.is_some() || self.broker.intraday_execution_start_time().is_some()) {
+            let mut symbols = execution_quote_symbols_for_decision(decision, portfolio, open_orders);
+            self.load_missing_execution_quotes(execution_date, None, None, &mut symbols)?;
+        }
         let submission_time = start_time.or_else(|| self.broker.intraday_execution_start_time());
         let post_close_window = self.broker.post_close_execution_quote_window_for_order(
             execution_date,
@@ -5796,7 +5805,7 @@ mod tests {
     fn physical_on_day_rules_keep_each_actual_submission_time() {
         let date = d(2026, 7, 6);
         let quotes = vec![
-            IntradayExecutionQuote {
+            IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: SYMBOL.to_string(),
                 timestamp: date.and_hms_opt(10, 18, 0).expect("morning timestamp"),
@@ -5809,7 +5818,7 @@ mod tests {
                 amount_delta: 110_000.0,
                 trading_phase: Some("continuous_auction".to_string()),
             },
-            IntradayExecutionQuote {
+            IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: SYMBOL.to_string(),
                 timestamp: date.and_hms_opt(10, 19, 0).expect("future timestamp"),
@@ -5822,7 +5831,7 @@ mod tests {
                 amount_delta: 990_000.0,
                 trading_phase: Some("continuous_auction".to_string()),
             },
-            IntradayExecutionQuote {
+            IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: SYMBOL.to_string(),
                 timestamp: date.and_hms_opt(15, 10, 0).expect("post-close timestamp"),
@@ -5950,7 +5959,7 @@ mod tests {
         let closing_only = matches!(scenario,2|3);
         let delayed = scenario == 4;
         let date = if closing_only { d(2026, 7, 6) } else if delayed { d(2026, 6, 2) } else { d(2026, 6, 1) };
-        let quote = |hour, minute, price| IntradayExecutionQuote {
+        let quote = |hour, minute, price| IntradayExecutionQuote { observation_kind: Default::default(),
             date, symbol: SYMBOL.into(), timestamp: date.and_hms_opt(hour, minute, 0).unwrap(),
             last_price: price, bid1: price, ask1: price, bid1_volume: 10_000, ask1_volume: 10_000,
             volume_delta: 10_000, amount_delta: price * 10_000.0, trading_phase: None,
@@ -6073,7 +6082,7 @@ mod tests {
             Ok(request
                 .symbols
                 .into_iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date: request.date,
                     symbol,
                     timestamp: request.date.and_hms_opt(15, 5, 0).expect("valid timestamp"),

crates/fidc-core/src/lib.rs

@@ -37,6 +37,7 @@ 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;

crates/fidc-core/src/platform_expr_strategy.rs

@@ -14718,7 +14718,7 @@ mod tests {
         let date = d(2025, 1, 2);
         let symbol = "000001.SZ";
         let parts = single_symbol_platform_data(&[date], symbol).snapshot_components();
-        let quotes = [(10, 18, 9.5), (14, 59, 10.5)].into_iter().map(|(hour, minute, price)| IntradayExecutionQuote {
+        let quotes = [(10, 18, 9.5), (14, 59, 10.5)].into_iter().map(|(hour, minute, price)| IntradayExecutionQuote { observation_kind: Default::default(),
             date, symbol: symbol.to_string(), timestamp: date.and_hms_opt(hour, minute, 0).unwrap(),
             last_price: price, bid1: price, ask1: price, bid1_volume: 1000, ask1_volume: 1000,
             volume_delta: 1000, amount_delta: price * 1000.0, trading_phase: Some("continuous".to_string()),
@@ -17846,7 +17846,7 @@ mod tests {
                 volume: 1_000_000,
             }],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: symbol.to_string(),
                 timestamp: date.and_hms_opt(10, 40, 0).expect("timestamp"),
@@ -17989,7 +17989,7 @@ mod tests {
                 volume: 1_000_000,
             }],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: symbol.to_string(),
                 timestamp: date.and_hms_opt(10, 40, 0).expect("timestamp"),
@@ -18077,7 +18077,7 @@ mod tests {
             lower_limit: 4.50,
             price_tick: 0.01,
         };
-        let quote = IntradayExecutionQuote {
+        let quote = IntradayExecutionQuote { observation_kind: Default::default(),
             date,
             symbol: symbol.to_string(),
             timestamp: date.and_hms_opt(10, 40, 0).expect("timestamp"),
@@ -18209,7 +18209,7 @@ mod tests {
                 volume: 1_000_000,
             }],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: symbol.to_string(),
                 timestamp: date.and_hms_opt(10, 40, 0).expect("timestamp"),
@@ -18454,7 +18454,7 @@ mod tests {
                 volume: 1_000_000,
             }],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: symbol.to_string(),
                 timestamp: date.and_hms_opt(10, 39, 59).unwrap(),
@@ -18871,7 +18871,7 @@ mod tests {
             ],
             Vec::new(),
             vec![
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date: first_date,
                     symbol: symbol.to_string(),
                     timestamp: first_date.and_hms_opt(10, 40, 0).expect("valid timestamp"),
@@ -18884,7 +18884,7 @@ mod tests {
                     amount_delta: 23_990.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date: second_date,
                     symbol: symbol.to_string(),
                     timestamp: second_date.and_hms_opt(10, 31, 0).expect("valid timestamp"),
@@ -19149,7 +19149,7 @@ mod tests {
             }],
             Vec::new(),
             vec![
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: delayed_symbol.to_string(),
                     timestamp: date.and_hms_opt(9, 31, 0).expect("valid timestamp"),
@@ -19162,7 +19162,7 @@ mod tests {
                     amount_delta: 146_200.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: delayed_symbol.to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -19175,7 +19175,7 @@ mod tests {
                     amount_delta: 145_000.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: other_symbol.to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -19450,7 +19450,7 @@ mod tests {
             }],
             Vec::new(),
             vec![
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: delayed_symbol.to_string(),
                     timestamp: date.and_hms_opt(9, 31, 0).expect("valid timestamp"),
@@ -19463,7 +19463,7 @@ mod tests {
                     amount_delta: 146_300.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: other_symbol.to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -19699,7 +19699,7 @@ mod tests {
             ],
             Vec::new(),
             vec![
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date: first_date,
                     symbol: symbol.to_string(),
                     timestamp: first_date.and_hms_opt(9, 31, 0).expect("valid timestamp"),
@@ -19712,7 +19712,7 @@ mod tests {
                     amount_delta: 56_450.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date: first_date,
                     symbol: symbol.to_string(),
                     timestamp: first_date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -19725,7 +19725,7 @@ mod tests {
                     amount_delta: 49_300.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date: second_date,
                     symbol: symbol.to_string(),
                     timestamp: second_date.and_hms_opt(9, 31, 0).expect("valid timestamp"),
@@ -20027,7 +20027,7 @@ mod tests {
                 volume: 1_000_000,
             }],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: symbol.to_string(),
                 timestamp: date.and_hms_opt(10, 18, 0).expect("timestamp"),
@@ -20485,7 +20485,7 @@ mod tests {
             vec![candidate],
             vec![benchmark],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: symbol.to_string(),
                 timestamp: date.and_hms_opt(9, 30, 0).expect("timestamp"),
@@ -20672,7 +20672,7 @@ mod tests {
             prev_close: 998.0,
             volume: 1_000_000,
         };
-        let quote = |date: NaiveDate, last_price: f64, volume_delta: u64| IntradayExecutionQuote {
+        let quote = |date: NaiveDate, last_price: f64, volume_delta: u64| IntradayExecutionQuote { observation_kind: Default::default(),
             date,
             symbol: symbol.to_string(),
             timestamp: date.and_hms_opt(10, 15, 0).expect("timestamp"),
@@ -22285,7 +22285,7 @@ mod tests {
                 volume: 1_000_000,
             }],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: symbol.to_string(),
                 timestamp: date.and_hms_opt(10, 18, 0).expect("timestamp"),
@@ -22936,7 +22936,7 @@ mod tests {
             Vec::new(),
             symbols
                 .iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: (*symbol).to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("timestamp"),
@@ -23090,7 +23090,7 @@ mod tests {
             }],
             Vec::new(),
             vec![
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: symbol.to_string(),
                     timestamp: date.and_hms_opt(9, 31, 0).expect("timestamp"),
@@ -23103,7 +23103,7 @@ mod tests {
                     amount_delta: 110_000.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: symbol.to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("timestamp"),
@@ -23247,7 +23247,7 @@ mod tests {
             }],
             Vec::new(),
             vec![
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: symbol.to_string(),
                     timestamp: date.and_hms_opt(9, 31, 0).expect("timestamp"),
@@ -23260,7 +23260,7 @@ mod tests {
                     amount_delta: 108_000.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: symbol.to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("timestamp"),
@@ -23404,7 +23404,7 @@ mod tests {
             }],
             Vec::new(),
             vec![
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: symbol.to_string(),
                     timestamp: date.and_hms_opt(9, 31, 0).expect("timestamp"),
@@ -23417,7 +23417,7 @@ mod tests {
                     amount_delta: 110_000.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: symbol.to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("timestamp"),
@@ -23574,7 +23574,7 @@ mod tests {
             Vec::new(),
             symbols
                 .iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: (*symbol).to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("timestamp"),
@@ -23889,7 +23889,7 @@ mod tests {
                 volume: 1_000_000,
             }],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: symbol.to_string(),
                 timestamp: date.and_hms_opt(10, 40, 0).expect("timestamp"),
@@ -24045,7 +24045,7 @@ mod tests {
             Vec::new(),
             symbols
                 .iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: (*symbol).to_string(),
                     timestamp: date.and_hms_opt(10, 15, 0).expect("timestamp"),
@@ -24214,7 +24214,7 @@ mod tests {
                 volume: 1_000_000,
             }],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: symbol.to_string(),
                 timestamp: date.and_hms_opt(10, 15, 0).expect("timestamp"),
@@ -24372,7 +24372,7 @@ mod tests {
                 volume: 1_000_000,
             }],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: symbol.to_string(),
                 timestamp: date.and_hms_opt(9, 33, 0).expect("valid timestamp"),
@@ -24494,7 +24494,7 @@ mod tests {
             }],
             Vec::new(),
             vec![
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: symbol.to_string(),
                     timestamp: date.and_hms_opt(10, 40, 0).expect("valid timestamp"),
@@ -24507,7 +24507,7 @@ mod tests {
                     amount_delta: 1_000.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: symbol.to_string(),
                     timestamp: date.and_hms_opt(14, 58, 59).expect("valid timestamp"),
@@ -24520,7 +24520,7 @@ mod tests {
                     amount_delta: 2_000.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: symbol.to_string(),
                     timestamp: date.and_hms_opt(14, 59, 2).expect("valid timestamp"),
@@ -24743,7 +24743,7 @@ mod tests {
                 volume: 1_000_000,
             }],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: symbol.to_string(),
                 timestamp: date.and_hms_opt(10, 39, 59).unwrap(),
@@ -24980,7 +24980,7 @@ mod tests {
                 .collect(),
             Vec::new(),
             vec![
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date: execution_date,
                     symbol: limit_symbol.to_string(),
                     timestamp: execution_date
@@ -24995,7 +24995,7 @@ mod tests {
                     amount_delta: 233.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date: execution_date,
                     symbol: fallback_symbol.to_string(),
                     timestamp: execution_date
@@ -25233,7 +25233,7 @@ mod tests {
                 })
                 .collect(),
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date: execution_date,
                 symbol: candidate_symbol.to_string(),
                 timestamp: execution_date.and_hms_opt(9, 33, 0).unwrap(),
@@ -27761,7 +27761,7 @@ mod tests {
                 volume: 1_000_000,
             }],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: "000002.SZ".to_string(),
                 timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -28084,7 +28084,7 @@ mod tests {
             Vec::new(),
             symbols
                 .iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: (*symbol).to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -28242,7 +28242,7 @@ mod tests {
             Vec::new(),
             symbols
                 .iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: (*symbol).to_string(),
                     timestamp: date.and_hms_opt(10, 40, 0).expect("timestamp"),
@@ -28572,7 +28572,7 @@ mod tests {
             Vec::new(),
             symbols
                 .iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: (*symbol).to_string(),
                     timestamp: date.and_hms_opt(10, 40, 0).expect("timestamp"),
@@ -29342,7 +29342,7 @@ mod tests {
             Vec::new(),
             symbols
                 .iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: (*symbol).to_string(),
                     timestamp: date.and_hms_opt(9, 33, 0).expect("valid timestamp"),
@@ -29525,7 +29525,7 @@ mod tests {
             Vec::new(),
             symbols
                 .iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: (*symbol).to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -29736,7 +29736,7 @@ mod tests {
             Vec::new(),
             symbols
                 .iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: (*symbol).to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -29987,7 +29987,7 @@ mod tests {
             Vec::new(),
             symbols
                 .iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: (*symbol).to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -30203,7 +30203,7 @@ mod tests {
             Vec::new(),
             symbols
                 .iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: (*symbol).to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -30569,7 +30569,7 @@ mod tests {
                 volume: 1_000_000,
             }],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: symbol.to_string(),
                 timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -30750,7 +30750,7 @@ mod tests {
             }],
             Vec::new(),
             vec![
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: delayed_symbol.to_string(),
                     timestamp: date.and_hms_opt(9, 31, 0).expect("valid timestamp"),
@@ -30763,7 +30763,7 @@ mod tests {
                     amount_delta: 105_000.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: delayed_symbol.to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -30776,7 +30776,7 @@ mod tests {
                     amount_delta: 90_000.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: held_symbol.to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -30789,7 +30789,7 @@ mod tests {
                     amount_delta: 100_000.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: buy_symbol.to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -30978,7 +30978,7 @@ mod tests {
             }],
             Vec::new(),
             vec![
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: delayed_symbol.to_string(),
                     timestamp: date.and_hms_opt(9, 31, 0).expect("valid timestamp"),
@@ -30991,7 +30991,7 @@ mod tests {
                     amount_delta: 4_200.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: held_symbol.to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -31004,7 +31004,7 @@ mod tests {
                     amount_delta: 100_000.0,
                     trading_phase: Some("continuous".to_string()),
                 },
-                IntradayExecutionQuote {
+                IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: buy_symbol.to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -31215,7 +31215,7 @@ mod tests {
                 .flat_map(|symbol| {
                     let mut quotes = Vec::new();
                     if *symbol == delayed_symbol {
-                        quotes.push(IntradayExecutionQuote {
+                        quotes.push(IntradayExecutionQuote { observation_kind: Default::default(),
                             date,
                             symbol: (*symbol).to_string(),
                             timestamp: date.and_hms_opt(9, 31, 0).expect("valid timestamp"),
@@ -31229,7 +31229,7 @@ mod tests {
                             trading_phase: Some("continuous".to_string()),
                         });
                     }
-                    quotes.push(IntradayExecutionQuote {
+                    quotes.push(IntradayExecutionQuote { observation_kind: Default::default(),
                         date,
                         symbol: (*symbol).to_string(),
                         timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -31455,7 +31455,7 @@ mod tests {
                 .flat_map(|symbol| {
                     let mut quotes = Vec::new();
                     if *symbol == delayed_symbol {
-                        quotes.push(IntradayExecutionQuote {
+                        quotes.push(IntradayExecutionQuote { observation_kind: Default::default(),
                             date,
                             symbol: (*symbol).to_string(),
                             timestamp: date.and_hms_opt(9, 31, 0).expect("valid timestamp"),
@@ -31469,7 +31469,7 @@ mod tests {
                             trading_phase: Some("continuous".to_string()),
                         });
                     }
-                    quotes.push(IntradayExecutionQuote {
+                    quotes.push(IntradayExecutionQuote { observation_kind: Default::default(),
                         date,
                         symbol: (*symbol).to_string(),
                         timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -32141,7 +32141,7 @@ mod tests {
             Vec::new(),
             symbols
                 .iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: (*symbol).to_string(),
                     timestamp: date.and_hms_opt(9, 33, 0).expect("valid timestamp"),
@@ -32430,7 +32430,7 @@ mod tests {
             Vec::new(),
             symbols
                 .iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: (*symbol).to_string(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -32641,7 +32641,7 @@ mod tests {
             Vec::new(),
             symbols
                 .iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: symbol.clone(),
                     timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -32848,7 +32848,7 @@ mod tests {
             Vec::new(),
             symbols
                 .iter()
-                .map(|symbol| IntradayExecutionQuote {
+                .map(|symbol| IntradayExecutionQuote { observation_kind: Default::default(),
                     date,
                     symbol: (*symbol).to_string(),
                     timestamp: date.and_hms_opt(14, 59, 0).expect("valid timestamp"),
@@ -32991,7 +32991,7 @@ mod tests {
                 volume: 1_000_000,
             }],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: symbol.to_string(),
                 timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
@@ -33214,7 +33214,7 @@ mod tests {
                 volume: 1_000_000,
             }],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: symbol.to_string(),
                 timestamp: date.and_hms_opt(9, 33, 0).expect("valid timestamp"),
@@ -33351,7 +33351,7 @@ mod tests {
                 volume: 1_000_000,
             }],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date,
                 symbol: other_symbol.to_string(),
                 timestamp: date.and_hms_opt(10, 18, 0).unwrap(),
@@ -33492,7 +33492,7 @@ mod tests {
                 volume: 1_000_000,
             }],
             Vec::new(),
-            vec![IntradayExecutionQuote {
+            vec![IntradayExecutionQuote { observation_kind: Default::default(),
                 date: decision_date,
                 symbol: other_symbol.to_string(),
                 timestamp: decision_date.and_hms_opt(10, 18, 0).unwrap(),

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");
+    }
+}