벡테스팅 수정

frontend/src/hooks/useVirtualTradingCore.ts

@@ -37,7 +37,7 @@ import {
 import { pinStrategyEvaluationTimeframes } from '../utils/strategyTimeframePin';
 import { persistVirtualTargetPinned } from '../utils/virtualTargetMutations';
 import {
-  coalesceTargetsToDefaultStrategy,
+  freezeTargetsBeforeGlobalStrategyChange,
   resolveVirtualTargetStrategyId,
 } from '../utils/virtualTargetStrategy';
 import {
@@ -186,11 +186,6 @@ export function useVirtualTradingCore(options: UseVirtualTradingCoreOptions = {}
   }, [session]);
   useEffect(() => { saveVirtualCardViewMode(viewMode); }, [viewMode]);
 
-  useEffect(() => {
-    if (session.globalStrategyId == null) return;
-    setTargets(prev => coalesceTargetsToDefaultStrategy(prev, session.globalStrategyId));
-  }, [session.globalStrategyId]);
-
   const strategyNames = useMemo(
     () => Object.fromEntries(strategies.map(s => [s.id, s.name])),
     [strategies],
@@ -258,13 +253,13 @@ export function useVirtualTradingCore(options: UseVirtualTradingCoreOptions = {}
     const names = resolveVirtualTargetNames(market, meta?.koreanName, meta?.englishName);
     setTargets(prev => [...prev, {
       market,
-      strategyId: null,
+      strategyId: session.globalStrategyId,
       koreanName: names.koreanName,
       englishName: names.englishName,
     }]);
     setSelectedMarket(market);
     return true;
-  }, [targets, virtualTargetMaxCount]);
+  }, [targets, session.globalStrategyId, virtualTargetMaxCount]);
 
   const handleRemoveTarget = useCallback((market: string) => {
     setTargets(prev => prev.filter(x => x.market !== market));
@@ -282,13 +277,11 @@ export function useVirtualTradingCore(options: UseVirtualTradingCoreOptions = {}
     });
   }, []);
 
+  /** 상단 기본전략 — 신규 추가 종목 템플릿만 변경, 기존 종목 전략은 유지 */
   const handleGlobalStrategyChange = useCallback((strategyId: number | null) => {
-    const next = { ...session, globalStrategyId: strategyId };
-    setSession(next);
-    if (session.running && strategyId) {
-      void syncVirtualTargetsToBackend(targets, next, true);
-    }
-  }, [session, targets]);
+    setTargets(prev => freezeTargetsBeforeGlobalStrategyChange(prev, session.globalStrategyId));
+    setSession(prev => ({ ...prev, globalStrategyId: strategyId }));
+  }, [session.globalStrategyId]);
 
   const handleStart = useCallback(async () => {
     if (targets.length === 0) {