전략 시간봉 오류 수정

frontend/src/App.tsx

@@ -1361,7 +1361,7 @@ function App() {
         cfg = { ...fromConfig, id: newIndId(), type: def.type };
       } else {
         const params = getParams(type, def.defaultParams);
-        const { plots, hlines, cloudColors } = getVisualConfig(type, def.plots, def.hlines);
+        const { plots, hlines, cloudColors, bandBackground } = getVisualConfig(type, def.plots, def.hlines);
         cfg = {
           id: newIndId(),
           type: def.type,
@@ -1369,6 +1369,7 @@ function App() {
           plots,
           hlines,
           ...(cloudColors ? { cloudColors } : {}),
+          ...(bandBackground ? { bandBackground } : {}),
         };
       }
       if (type === 'SMA') {
@@ -1463,7 +1464,13 @@ function App() {
       isIndicatorSettingsTemplateId(settingsModalId ?? '')
       || updated.id.startsWith('template_');
     saveParams(updated.type, updated.params);
-    saveVisual(updated.type, updated.plots, updated.hlines, updated.cloudColors);
+    saveVisual(
+      updated.type,
+      updated.plots,
+      updated.hlines,
+      updated.cloudColors,
+      updated.bandBackground,
+    );
 
     const applyUpdate = (prev: IndicatorConfig[]): IndicatorConfig[] => {
       if (fromTemplate) {
@@ -1539,7 +1546,7 @@ function App() {
     applyChartIndicators(chartIndicators);
     allConfigs.forEach(ind => {
       saveParams(ind.type, ind.params);
-      saveVisual(ind.type, ind.plots, ind.hlines, ind.cloudColors);
+      saveVisual(ind.type, ind.plots, ind.hlines, ind.cloudColors, ind.bandBackground);
     });
     setShowBulkIndSettings(false);
   }, [applyChartIndicators, saveParams, saveVisual]);