Connect auth to backend and persist theme preference

webui/src/app/components/ClientLayoutEffect.js

@@ -0,0 +1,21 @@
+'use client';
+
+import { useEffect } from 'react';
+import axios from 'axios';
+
+export default function ClientLayoutEffect() {
+    useEffect(() => {
+        async function fetchData() {
+            try {
+                const res = await axios.get('/token');
+                console.log('Token response:', res.data);
+            } catch (error) {
+                console.error('Token fetch error:', error);
+            }
+        }
+
+        fetchData().then(r => console.log("Ok"));
+    }, []);
+
+    return null;
+}