update results when clear strategy positions but strategy does not exist

src/base_trader.py

@@ -224,3 +224,5 @@ class BaseTrader(ABC):
         """清除指定策略的持仓管理器"""
         if strategy_name in self.position_managers:
             self.position_managers[strategy_name].clear()
+            return True
+        return False

src/trade_server.py

@@ -435,9 +435,10 @@ def clear_strategy(strategy_name):
     """清除指定策略的持仓管理数据"""
     logger.info(f"接收到清除策略持仓请求: {strategy_name}")
     try:
-        get_trader().clear_position_manager(strategy_name)
-
-        return jsonify({"success": True, "message": "clear success"}), 200
+        if get_trader().clear_position_manager(strategy_name):
+            return jsonify({"success": True, "message": "clear success"}), 200
+        else:
+            return jsonify({"success": False, "message": "策略不存在: " + strategy_name}), 400
 
     except Exception as e:
         logger.error(f"清除策略持仓时出错: {str(e)}")