add alot

lib/app/app.dart

@@ -1,23 +1,51 @@
 import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
 import 'package:kooltab2/theme.dart';
+import 'package:kooltab2/utils/app_update_util.dart';
 
-class KoolTabApp extends StatelessWidget {
-  const KoolTabApp({
-    super.key,
-    required this.router,
-  });
+class KoolTabApp extends StatefulWidget {
+  const KoolTabApp({super.key, required this.router});
 
   final GoRouter router;
 
+  @override
+  State<KoolTabApp> createState() => _KoolTabAppState();
+}
+
+class _KoolTabAppState extends State<KoolTabApp> {
+  @override
+  void initState() {
+    super.initState();
+
+    _checkForUpdates();
+  }
+
+  Future<void> _checkForUpdates() async {
+    final updater = AppUpdateUtil(serverUrl: "http://localhost:3000/");
+
+    try {
+      final update = await updater.checkForUpdate();
+
+      if (update == null) {
+        return;
+      }
+
+      debugPrint("Update available: ${update.version}");
+
+      // TODO:
+      // Show update dialog here
+    } catch (e) {
+      debugPrint("Update check failed: $e");
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return MaterialApp.router(
       title: 'KoolTab',
       debugShowCheckedModeBanner: false,
-      routerConfig: router,
-      // theme: lightTheme,
+      routerConfig: widget.router,
       theme: darkTheme,
     );
   }
-}
+}