실시간 차트 갱신오류 수정

frontend/src/utils/chartLiveQuote.ts

@@ -17,10 +17,15 @@ export function resolveChartLiveQuote(
   lastBar: OHLCVBar | null,
   bars: OHLCVBar[],
 ): ChartLiveQuote {
+  // 실시간 차트: STOMP/WS로 갱신되는 최신 봉 종가 우선 (티커 REST 초기값에 고정되지 않도록)
+  const barPrice = lastBar?.close;
+  const tickerPrice = ticker?.tradePrice;
   const price =
-    ticker?.tradePrice != null && Number.isFinite(ticker.tradePrice)
-      ? ticker.tradePrice
-      : lastBar?.close ?? null;
+    barPrice != null && Number.isFinite(barPrice)
+      ? barPrice
+      : tickerPrice != null && Number.isFinite(tickerPrice)
+        ? tickerPrice
+        : null;
 
   if (ticker?.changeRate != null && Number.isFinite(ticker.changeRate)) {
     const changePct = ticker.changeRate * 100;