Add admin management tabs and TV/mobile fixes

flutter_app/lib/main.dart

@@ -22,6 +22,7 @@ Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
   // Hide status bar for TV immersive experience
   SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersiveSticky);
+  GoogleFonts.config.allowRuntimeFetching = false;
 
   await initializeDateFormatting();
 
@@ -120,9 +121,8 @@ class MyApp extends StatelessWidget {
             ),
           ),
         ),
-        initialRoute: '/',
+        home: const AdaptiveHome(),
         routes: {
-          '/': (context) => const TvDashboardScreen(),
           '/mobile': (context) => const MobileHomeScreen(),
           '/admin': (context) => const AdminScreen(),
         },
@@ -130,3 +130,25 @@ class MyApp extends StatelessWidget {
     );
   }
 }
+
+class AdaptiveHome extends StatelessWidget {
+  const AdaptiveHome({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    const forceTv = String.fromEnvironment('FORCE_TV', defaultValue: 'false');
+    if (forceTv.toLowerCase() == 'true') {
+      return const TvDashboardScreen();
+    }
+
+    final size = MediaQuery.of(context).size;
+    final shortestSide = size.shortestSide;
+    final isMobile = shortestSide < 600;
+
+    if (isMobile) {
+      return const MobileHomeScreen();
+    }
+
+    return const TvDashboardScreen();
+  }
+}