Add UI XML files for current and initial app layout

- Created `ui-current.xml` to represent the current state of the app's UI hierarchy.
- Created `ui.xml` to represent the initial state of the app's UI hierarchy.

plugins/auth-sync.client.js

@@ -0,0 +1,25 @@
+export default defineNuxtPlugin((nuxtApp) => {
+  const authStore = useAuthStore()
+
+  const syncAuthState = async () => {
+    await authStore.checkAuth()
+  }
+
+  nuxtApp.hook('app:mounted', () => {
+    syncAuthState()
+  })
+
+  if (typeof window !== 'undefined') {
+    window.addEventListener('pageshow', (event) => {
+      if (event.persisted) {
+        syncAuthState()
+      }
+    })
+
+    document.addEventListener('visibilitychange', () => {
+      if (document.visibilityState === 'visible') {
+        syncAuthState()
+      }
+    })
+  }
+})