앱 실시간 차트 갱신오류 수정

frontend/src/hooks/useStompChartData.ts

@@ -10,7 +10,7 @@ import { getCandleStart, TF_SECONDS } from '../utils/upbitApi';
 import { DISPLAY_COUNT, WARMUP_COUNT, OBV_DEEP_HISTORY } from './useUpbitData';
 import type { WsStatus } from './useUpbitData';
 import { fetchBacktestHistoryCandles } from '../utils/backtestWarmup';
-import { API_BASE } from '../utils/backendApi';
+import { pinCandleWatch } from '../utils/backendApi';
 
 /** 백엔드 BarBuilder 는 틱마다 1m 만 STOMP 발행 — 차트 분봉은 클라이언트에서 집계 */
 const STOMP_TICK_CANDLE_TYPE = '1m';
@@ -28,13 +28,7 @@ function resolveChartBarTime(
 }
 
 async function pinChartWatch(market: string, candleType: string): Promise<void> {
-  try {
-    await fetch(`${API_BASE}/candles/watch?market=${encodeURIComponent(market)}&type=${encodeURIComponent(candleType)}`, {
-      method: 'POST',
-    });
-  } catch {
-    /* watch 실패해도 STOMP 구독은 계속 */
-  }
+  await pinCandleWatch(market, candleType);
 }
 
 interface StompCandlePayload {