서버오류 수정

frontend/src/hooks/useMarketTicker.ts

@@ -10,6 +10,7 @@
 
 import { useState, useEffect, useRef, useCallback } from 'react';
 import { setMarketNames } from '../utils/marketNameCache';
+import { UPBIT_API } from '../utils/upbitApi';
 
 export type ChangeDir = 'RISE' | 'FALL' | 'EVEN';
 
@@ -69,7 +70,7 @@ function getMarketCode(raw: UpbitTickerRaw): string {
 }
 
 async function fetchAllMarkets(): Promise<MarketInfo[]> {
-  const res = await fetch('/upbit-api/v1/market/all?isDetails=true');
+  const res = await fetch(`${UPBIT_API}/market/all?isDetails=true`);
   if (!res.ok) throw new Error(`market/all ${res.status}`);
   const data: UpbitMarketAll[] = await res.json();
   const krw = data.filter(m => m.market.startsWith('KRW-'));
@@ -88,7 +89,7 @@ async function fetchAllTickers(markets: string[]): Promise<UpbitTickerRaw[]> {
   for (let i = 0; i < markets.length; i += 100) {
     const chunk = markets.slice(i, i + 100);
     try {
-      const res = await fetch(`/upbit-api/v1/ticker?markets=${chunk.join(',')}`);
+      const res = await fetch(`${UPBIT_API}/ticker?markets=${chunk.join(',')}`);
       if (res.ok) results.push(...(await res.json()));
     } catch { /* 부분 실패 무시 */ }
   }