테블릿 로딩 이슈 수정

frontend/src/utils/strategyTimeframeSync.ts

@@ -146,7 +146,7 @@ export async function syncStrategyTimeframesFromLayoutIfNeeded(
   strategy?: StrategyDto | null,
 ): Promise<boolean> {
   const strat = (await loadStrategy(strategyId)) ?? strategy ?? null;
-  if (!strat) return true;
+  if (!strat) return false;
 
   const uiTfs = collectUiEvaluationTimeframes(strategyId, strat);
   if (uiTfs.length === 0) return true;