loading 오류 수정

frontend/src/components/MarketSearchPanel.tsx

@@ -5,6 +5,7 @@ import {
   toggleFavorite,
   FAVORITES_CHANGED_EVENT,
 } from '../utils/marketStorage';
+import { API_BASE } from '../utils/backendApi';
 import { UPBIT_API } from '../utils/upbitApi';
 import { fetchTickersThrottled } from '../utils/upbitTickerFetch';
 import { safeToFixed } from '../utils/safeFormat';
@@ -98,7 +99,11 @@ export const MarketSearchPanel: React.FC<MarketSearchPanelProps> = ({
   // ── 1. 마켓 목록 로드 ─────────────────────────────────────────────────────
   useEffect(() => {
     setLoading(true);
-    fetch(`${UPBIT_API}/market/all?isDetails=false`)
+    fetch(`${API_BASE}/markets/all?isDetails=false`)
+      .then(r => {
+        if (!r.ok) return fetch(`${UPBIT_API}/market/all?isDetails=false`);
+        return r;
+      })
       .then(r => {
         if (!r.ok) throw new Error(`market/all ${r.status}`);
         return r.json();