fix: prevent private memos from disappearing during token refresh (#5565)

Root cause: enabled={isInitialized && !!user} prevented displaying cached
data when user auth state transitioned during token refresh.

Changes:
- Remove !!user check from Home page enabled condition
- Add clearAccessToken() in redirectOnAuthFailure for clean logout

Fixes #5565

web/src/pages/Home.tsx

@@ -28,7 +28,7 @@ const Home = () => {
         listSort={listSort}
         orderBy={orderBy}
         filter={memoFilter}
-        enabled={isInitialized && !!user} // Wait for contexts to stabilize before fetching
+        enabled={isInitialized}
       />
     </div>
   );

web/src/utils/auth-redirect.ts

+import { clearAccessToken } from "@/auth-state";
 import { getInstanceConfig } from "@/instance-config";
 import { ROUTES } from "@/router/routes";
 
@@ -31,6 +32,10 @@ export function redirectOnAuthFailure(): void {
 
   // Only redirect if it's a private route or disallowPublicVisibility is enabled
   if (disallowPublicVisibility || isPrivateRoute(currentPath)) {
+    // Clear access token to ensure user is fully logged out
+    // This prevents the issue where user appears logged in but sees only public memos
+    // See: https://github.com/usememos/memos/issues/5565
+    clearAccessToken();
     window.location.replace(target);
   }
 }