모의투자, 백테스팅 레이아웃 수정

frontend/src/utils/strategyCanvasInteractionStorage.ts

@@ -0,0 +1,20 @@
+export type StrategyCanvasInteractionMode = 'pan' | 'select';
+
+const STORAGE_KEY = 'gc_se_canvas_interaction';
+
+export function loadCanvasInteractionMode(): StrategyCanvasInteractionMode {
+  try {
+    const raw = localStorage.getItem(STORAGE_KEY);
+    return raw === 'pan' ? 'pan' : 'select';
+  } catch {
+    return 'select';
+  }
+}
+
+export function saveCanvasInteractionMode(mode: StrategyCanvasInteractionMode): void {
+  try {
+    localStorage.setItem(STORAGE_KEY, mode);
+  } catch {
+    /* ignore */
+  }
+}