feat: Implement the home screen with new UI components and assets, and refine authentication screens and routing.

lib/routing/app_router.dart

@@ -1,22 +1,64 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
+import 'package:real_estate_mobile/features/auth/presentation/providers/auth_provider.dart';
 import 'package:real_estate_mobile/features/auth/presentation/screens/login_screen.dart';
 import 'package:real_estate_mobile/features/auth/presentation/screens/signup_screen.dart';
+import 'package:real_estate_mobile/features/home/presentation/screens/home_screen.dart';
 
-class AppRouter {
-  AppRouter._();
+final routerProvider = Provider<GoRouter>((ref) {
+  final authRefreshNotifier = _AuthRefreshNotifier();
 
-  static final GoRouter router = GoRouter(
-    initialLocation: '/signup',
+  ref.listen(authProvider, (_, __) {
+    authRefreshNotifier.notify();
+  });
+
+  ref.onDispose(() {
+    authRefreshNotifier.dispose();
+  });
+
+  return GoRouter(
+    initialLocation: '/login',
+    refreshListenable: authRefreshNotifier,
+    redirect: (context, state) {
+      final authState = ref.read(authProvider);
+      final isAuthenticated = authState.status == AuthStatus.authenticated;
+      final isLoading = authState.status == AuthStatus.loading;
+
+      final isAuthRoute = state.matchedLocation == '/login' ||
+          state.matchedLocation == '/signup';
+
+      // While checking auth status, don't redirect
+      if (isLoading) return null;
+
+      // If authenticated and on auth page, go to home
+      if (isAuthenticated && isAuthRoute) return '/home';
+
+      // If not authenticated and on protected page, go to login
+      if (!isAuthenticated && !isAuthRoute) return '/login';
+
+      return null;
+    },
     routes: [
+      GoRoute(
+        path: '/login',
+        builder: (context, state) => const LoginScreen(),
+      ),
       GoRoute(
         path: '/signup',
         builder: (context, state) => const SignupScreen(),
       ),
       GoRoute(
-        path: '/login',
-        builder: (context, state) => const LoginScreen(),
+        path: '/home',
+        builder: (context, state) => const HomeScreen(),
       ),
     ],
   );
+});
+
+/// Notifier that triggers GoRouter refresh when auth state changes.
+class _AuthRefreshNotifier extends ChangeNotifier {
+  void notify() {
+    notifyListeners();
+  }
 }