feat(*): 创作平台 - 升级短剧分镜工作流并完善模型计费与界面状态

web/src/components/layout/workspace-sidebar-state.ts

@@ -1 +1,29 @@
 export const WORKSPACE_SIDEBAR_STORAGE_KEY = "infinite-canvas:workspace-sidebar-collapsed";
+
+type WorkspaceSidebarStorage = Pick<Storage, "getItem" | "setItem">;
+
+function workspaceSidebarStorage(storage?: WorkspaceSidebarStorage) {
+    if (storage) return storage;
+    if (typeof window === "undefined") return undefined;
+    try {
+        return window.localStorage;
+    } catch {
+        return undefined;
+    }
+}
+
+export function readWorkspaceSidebarCollapsed(storage?: WorkspaceSidebarStorage) {
+    try {
+        return workspaceSidebarStorage(storage)?.getItem(WORKSPACE_SIDEBAR_STORAGE_KEY) === "1";
+    } catch {
+        return false;
+    }
+}
+
+export function writeWorkspaceSidebarCollapsed(collapsed: boolean, storage?: WorkspaceSidebarStorage) {
+    try {
+        workspaceSidebarStorage(storage)?.setItem(WORKSPACE_SIDEBAR_STORAGE_KEY, collapsed ? "1" : "0");
+    } catch {
+        // localStorage 不可用时保留当前内存状态，不能阻断侧栏交互。
+    }
+}