fix: 修复 AI 设计会话失效后的伪登录

问题：Main 刷新令牌返回 401 后已清空会话，但 Renderer 仍保留用户信息，AI 设计持续返回 AUTH_REQUIRED。

实现：认证初始化等待 Main 同步完成；同步或刷新失败清理登录态；Workspace 识别结构化认证错误并在重新登录后恢复加载；路由守卫响应登录状态变化。

验证：49 个聚焦测试通过，TypeScript、聚焦 Lint 与 Vite 生产构建通过。

src/App.tsx

@@ -123,7 +123,7 @@ function ProtectedLayout({
   setupReady: boolean;
 }) {
   const location = useLocation();
-  const isAuthenticated = useAuthStore((state) => state.isAuthenticated);
+  const authenticated = useAuthStore((state) => state.isAuthenticated());
   const allowsAnonymousImageWorkspace = imageWorkspaceLocalDevelopment
     && (location.pathname === '/'
       || location.pathname === '/image-canvas'
@@ -137,7 +137,7 @@ function ProtectedLayout({
     return <StartupScreen />;
   }
 
-  if (authRequired && !allowsAnonymousImageWorkspace && !isAuthenticated()) {
+  if (authRequired && !allowsAnonymousImageWorkspace && !authenticated) {
     return (
       <Navigate
         to="/login"
@@ -161,7 +161,7 @@ function ProtectedModuleSelection({
   imageWorkspaceLocalDevelopment: boolean;
   setupReady: boolean;
 }) {
-  const isAuthenticated = useAuthStore((state) => state.isAuthenticated);
+  const authenticated = useAuthStore((state) => state.isAuthenticated());
 
   if (!setupReady) {
     return <StartupScreen />;
@@ -171,7 +171,7 @@ function ProtectedModuleSelection({
     return <StartupScreen />;
   }
 
-  if (authRequired && !imageWorkspaceLocalDevelopment && !isAuthenticated()) {
+  if (authRequired && !imageWorkspaceLocalDevelopment && !authenticated) {
     return <Navigate to="/login" replace state={{ from: AI_MODULE_SELECTION_PATH }} />;
   }
 
@@ -242,14 +242,14 @@ function App() {
   const initProviders = useProviderStore((state) => state.init);
   const initAuth = useAuthStore((state) => state.init);
   const authInitialized = useAuthStore((state) => state.initialized);
-  const isAuthenticated = useAuthStore((state) => state.isAuthenticated);
+  const authenticated = useAuthStore((state) => state.isAuthenticated());
   const bootstrapUserSync = useUserSyncStore((state) => state.bootstrap);
   const setupReady = setupComplete || skipSetupForE2E || rendererOnlyPreview;
   const authRequired = !skipSetupForE2E && !rendererOnlyPreview;
   const imageWorkspaceLocalDevelopment = window.electron?.imageWorkspaceLocalDevelopment === true;
 
   useEffect(() => {
-    initAuth();
+    void initAuth();
   }, [initAuth]);
 
   useEffect(() => {
@@ -274,9 +274,9 @@ function App() {
     if (rendererOnlyPreview) return;
     if (!setupReady) return;
     if (!authInitialized) return;
-    if (!isAuthenticated()) return;
+    if (!authenticated) return;
     void bootstrapUserSync();
-  }, [authInitialized, bootstrapUserSync, isAuthenticated, rendererOnlyPreview, setupReady]);
+  }, [authenticated, authInitialized, bootstrapUserSync, rendererOnlyPreview, setupReady]);
 
   // Redirect to setup wizard if not complete
   useEffect(() => {