실시간 차트 갱신오류 수정

frontend/src/components/ChartSlot.tsx

@@ -1014,7 +1014,7 @@ const ChartSlot = forwardRef<ChartSlotHandle, ChartSlotProps>(function ChartSlot
               if (last && pending.time === last.time) mgr.updateBar(pending);
               else if (!last || pending.time > last.time) void mgr.appendBar(pending);
               else mgr.updateBar({ ...pending, time: last.time });
-            } else {
+            } else if (chartLiveReadyRef.current) {
               pendingRealtimeBarRef.current = null;
             }
             mgr.setCandleAreaPriceLabelsEnabled(chartCandleAreaPriceLabels);

frontend/src/components/TradingChart.tsx

@@ -994,6 +994,8 @@ const TradingChart: React.FC<TradingChartProps> = ({
       }
       const m = managerRef.current;
       if (m?.hasMainSeries()) {
+        // 지표 일부만 로드된 경우에도 메인 캔들은 준비됨 — 실시간 틱 허용
+        onCandlesReady?.();
         const expected = countExpectedVisibleIndicators(indicatorsRef.current);
         const loaded = m.getLoadedIndicatorCount();
         if (expected === 0 || loaded >= expected) {