feat(editor): save leptos island and page aggregate alignment progress

- switch main document flow toward leptos tiptap island host and generated runtime assets

- align page aggregate loading, page head single-source updates, and AI tool result recovery

- add tests and smoke scripts for title sync, AI route recovery, and editor host cutover

wolai-frontend/src/store/editor-bridge.ts

@@ -32,6 +32,7 @@ export interface EditorReferenceBridge {
   insertOnlineTableAsset?: (args: { documentId: string; tableId: string }) => void;
   replaceWithSnapshot: (blocks: Json) => void;
   openTableFullScreen?: (tableId: string) => void;
+  requestFallbackToBlockNote?: () => void;
 }
 
 interface EditorBridgeState {

wolai-frontend/src/store/sidebar.test.ts

@@ -0,0 +1,47 @@
+import { afterEach, describe, expect, it } from "vitest";
+import { useSidebarStore } from "@/store/sidebar";
+
+describe("useSidebarStore hydration", () => {
+  afterEach(() => {
+    localStorage.clear();
+  });
+
+  it("模块初始化时应保持默认首帧状态，避免先读持久化状态", () => {
+    const state = useSidebarStore.getState();
+
+    expect(state.open).toBe(false);
+    expect(state.width).toBe(280);
+    expect(state.viewMode).toBe("section");
+  });
+
+  it("手动 hydrate 后才应用持久化状态", () => {
+    localStorage.setItem(
+      "sidebar-ui",
+      JSON.stringify({
+        state: {
+          open: true,
+          width: 360,
+          collapsedSections: {
+            starred: false,
+            public: false,
+            shared: false,
+            private: true,
+            templates: false,
+          },
+          trashConfirm: false,
+          viewMode: "filesystem",
+        },
+        version: 4,
+      }),
+    );
+
+    const store = useSidebarStore;
+    expect(store.persist.hasHydrated()).toBe(false);
+    void store.persist.rehydrate();
+
+    expect(store.getState().open).toBe(true);
+    expect(store.getState().width).toBe(360);
+    expect(store.getState().viewMode).toBe("filesystem");
+    expect(store.persist.hasHydrated()).toBe(true);
+  });
+});

wolai-frontend/src/store/sidebar.ts

@@ -56,6 +56,7 @@ export const useSidebarStore = create<SidebarState>()(
     {
       name: "sidebar-ui",
       version: 4,
+      skipHydration: true,
       migrate: (persistedState, version) => {
         const state = persistedState as
           | Partial<