perf(selection): 优化选股执行性能

zhixing-server/src/zhixing_server/modules/selection/application/evaluate.py

@@ -2,6 +2,7 @@
 
 from __future__ import annotations
 
+from collections.abc import Sequence
 from datetime import date
 
 from ..domain.models import SelectionEvaluation, StockHistory
@@ -44,3 +45,12 @@ class EvaluateZhixingB1:
         """Evaluate an already loaded history for deterministic unit tests."""
 
         return self.strategy.evaluate(history, target_trade_date)
+
+    def execute_histories(
+        self,
+        histories: Sequence[StockHistory],
+        target_trade_date: date,
+    ) -> tuple[SelectionEvaluation, ...]:
+        """Evaluate loaded histories without issuing one read per stock."""
+
+        return tuple(self.execute_history(history, target_trade_date) for history in histories)