feat: implement validateRedirect utility for open redirect protection

app/pages/login.vue

@@ -24,14 +24,14 @@ definePageMeta({
 });
 
 const route = useRoute();
-const redirectPath = (route.query.redirect as string) || '/dashboard';
+const redirectPath = validateRedirect(route.query.redirect, '/dashboard');
 const { authProviders, error, isAuthenticated } = useAuth();
-
 const providers = await authProviders();
-
-watch(isAuthenticated, (authenticated) => {
+const redirect = (authenticated: boolean) => {
   if (authenticated) {
     navigateTo(redirectPath);
   }
-});
+};
+redirect(isAuthenticated.value);
+watch(isAuthenticated, redirect);
 </script>