feat: stabilize admin dashboard, refactor group management, implement PWA, and fix routing

app/pages/login.vue

@@ -33,7 +33,7 @@ definePageMeta({
   layout: 'default'
 })
 
-const { googleSignIn, initAuth } = useAuth()
+const { googleSignIn, initAuth, isAuthenticated } = useAuth()
 const loading = ref(false)
 
 const signInWithGoogle = async () => {
@@ -49,6 +49,13 @@ const signInWithGoogle = async () => {
 }
 
 onMounted(() => {
+  if (isAuthenticated.value) {
+    navigateTo('/')
+  }
   initAuth()
 })
+
+watch(isAuthenticated, (val) => {
+  if (val) navigateTo('/')
+})
 </script>