删除隐藏兼容模式并统一撮合风控

crates/fidc-core/src/cost.rs

@@ -5,8 +5,6 @@ use chrono::NaiveDate;
 use crate::events::OrderSide;
 use crate::risk_control::TradingConstraintConfig;
 
-pub const STOCK_PIT_TAX_CHANGE_DATE: (i32, u32, u32) = (2023, 8, 28);
-
 #[derive(Debug, Clone, Copy)]
 pub struct TradingCost {
     pub commission: f64,
@@ -45,26 +43,11 @@ pub struct ChinaAShareCostModel {
 
 impl Default for ChinaAShareCostModel {
     fn default() -> Self {
-        Self {
-            commission_rate: 0.0008,
-            stamp_tax_rate_before_change: 0.001,
-            stamp_tax_rate_after_change: 0.0005,
-            stamp_tax_change_date: default_stamp_tax_change_date(),
-            minimum_commission: 5.0,
-        }
+        Self::from_trading_constraints(TradingConstraintConfig::default())
     }
 }
 
 impl ChinaAShareCostModel {
-    pub fn aiquant_default() -> Self {
-        Self {
-            commission_rate: 0.0003,
-            stamp_tax_rate_before_change: 0.0005,
-            stamp_tax_rate_after_change: 0.0005,
-            ..Self::default()
-        }
-    }
-
     pub fn from_trading_constraints(config: TradingConstraintConfig) -> Self {
         Self {
             commission_rate: config.commission_rate,
@@ -135,15 +118,6 @@ impl ChinaAShareCostModel {
     }
 }
 
-fn default_stamp_tax_change_date() -> NaiveDate {
-    NaiveDate::from_ymd_opt(
-        STOCK_PIT_TAX_CHANGE_DATE.0,
-        STOCK_PIT_TAX_CHANGE_DATE.1,
-        STOCK_PIT_TAX_CHANGE_DATE.2,
-    )
-    .expect("valid pit tax change date")
-}
-
 impl CostModel for ChinaAShareCostModel {
     fn calculate(&self, date: NaiveDate, side: OrderSide, gross_amount: f64) -> TradingCost {
         if gross_amount <= 0.0 {
@@ -192,8 +166,8 @@ mod tests {
     use super::*;
 
     #[test]
-    fn aiquant_default_matches_current_backtest_fee_model() {
-        let model = ChinaAShareCostModel::aiquant_default();
+    fn default_matches_configurable_trading_constraints() {
+        let model = ChinaAShareCostModel::default();
         let date = NaiveDate::from_ymd_opt(2025, 11, 11).expect("valid date");
 
         assert!((model.commission_for(248_059.812) - 74.4179436).abs() < 1e-9);