修正AiQuant策略严格买入预算

crates/fidc-core/src/platform_strategy_spec.rs

@@ -1112,6 +1112,7 @@ pub fn platform_expr_config_from_spec(
     );
     if aiquant_profile {
         cfg.aiquant_transaction_cost = true;
+        cfg.strict_value_budget = true;
         let trading = spec
             .runtime_expressions
             .as_ref()
@@ -1174,6 +1175,9 @@ pub fn platform_expr_config_from_spec(
     {
         cfg.minimum_commission = None;
     }
+    if aiquant_profile {
+        cfg.strict_value_budget = true;
+    }
 
     Ok(cfg)
 }
@@ -1828,6 +1832,7 @@ mod tests {
         assert!(cfg.aiquant_transaction_cost);
         assert!(cfg.daily_top_up_enabled);
         assert!(cfg.retry_empty_rebalance);
+        assert!(cfg.strict_value_budget);
 
         let explicit_off = serde_json::json!({
             "engineConfig": {