修复AiQuant策略表达式回测执行语义

crates/fidc-core/src/risk_control.rs

@@ -41,6 +41,21 @@ impl ChinaAShareRiskControl {
         candidate: &CandidateEligibility,
         market: &DailyMarketSnapshot,
         instrument: Option<&Instrument>,
+    ) -> Option<&'static str> {
+        if let Some(reason) = Self::baseline_rejection_reason(date, candidate, market, instrument) {
+            return Some(reason);
+        }
+        if !candidate.allow_buy || !candidate.allow_sell {
+            return Some("trade_disabled");
+        }
+        None
+    }
+
+    pub fn baseline_rejection_reason(
+        date: NaiveDate,
+        candidate: &CandidateEligibility,
+        market: &DailyMarketSnapshot,
+        instrument: Option<&Instrument>,
     ) -> Option<&'static str> {
         if let Some(reason) = Self::instrument_rejection_reason(instrument, date) {
             return Some(reason);
@@ -60,9 +75,6 @@ impl ChinaAShareRiskControl {
         if candidate.is_one_yuan || market.day_open <= 1.0 {
             return Some("one_yuan");
         }
-        if !candidate.allow_buy || !candidate.allow_sell {
-            return Some("trade_disabled");
-        }
         None
     }
 
@@ -73,8 +85,7 @@ impl ChinaAShareRiskControl {
         instrument: Option<&Instrument>,
         check_price: f64,
     ) -> Option<&'static str> {
-        if let Some(reason) = Self::selection_rejection_reason(date, candidate, market, instrument)
-        {
+        if let Some(reason) = Self::baseline_rejection_reason(date, candidate, market, instrument) {
             return Some(reason);
         }
         if !candidate.allow_buy {