전략편집기 화면접속 시 에러 수정

frontend/src/App.tsx

@@ -129,6 +129,7 @@ import type { ChartRealtimeSource } from './hooks/useChartRealtimeData';
 import { VIRTUAL_SESSION_CHANGED_EVENT } from './utils/virtualTradingStorage';
 import { notifyPaperTradesChanged } from './utils/paperTradeEvents';
 import { useIsMobile, useIsCompactDevice } from './hooks/useMediaQuery';
+import { isTickerFeedPage } from './utils/tickerFeedPages';
 import MobileChartDock from './components/MobileChartDock';
 import LoginModal from './components/LoginModal';
 import AppDownloadModal from './components/AppDownloadModal';
@@ -241,15 +242,17 @@ function App() {
   const chartVisible = menuPage === 'chart';
   const isMobile = useIsMobile();
   const isCompactDevice = useIsCompactDevice();
+  const tickerFeedActive = isTickerFeedPage(menuPage);
 
   const priorityMarketsRef = useRef<string[]>([symbol]);
   const getPriorityMarkets = useCallback(() => priorityMarketsRef.current, []);
-  /** lite=모바일·태블릿(Upbit 직접 REST 최소). loadFull=마켓 패널 열림 시 백엔드 일괄 */
+  /** enabled=차트·매매 화면만. lite=태블릿. loadFull=마켓 패널 열림 */
   const marketTickerOpts = useMemo(() => ({
+    enabled: tickerFeedActive,
     lite: isCompactDevice,
-    loadFull: showMarketPanel,
+    loadFull: showMarketPanel && tickerFeedActive,
     getPriorityMarkets,
-  }), [isCompactDevice, showMarketPanel, getPriorityMarkets]);
+  }), [tickerFeedActive, isCompactDevice, showMarketPanel, getPriorityMarkets]);
   const { tickers: marketTickers, loading: marketLoading, usdRate } = useMarketTicker(marketTickerOpts);
 
   // ── 레이아웃 상태 ─────────────────────────────────────────────────────
@@ -1156,9 +1159,9 @@ function App() {
     useMemo(() => ({
       onTickUpdate: handleTickUpdate,
       onNewCandle:  handleNewCandle,
-      enabled:      useUpbit,
+      enabled:      chartScreenActive && useUpbit,
       source:       chartRealtimeSource as 'BACKEND_STOMP' | 'UPBIT_DIRECT',
-    }), [handleTickUpdate, handleNewCandle, useUpbit, chartRealtimeSource]),
+    }), [handleTickUpdate, handleNewCandle, chartScreenActive, useUpbit, chartRealtimeSource]),
   );
 
   // 실제로 차트에 넘길 bars (초기 200개, 실시간 수신 후에도 변경 없음)