feat: Implement support chat functionality, add 2FA verification screen and routing, and update dependencies.

lib/routing/app_router.dart

@@ -22,6 +22,8 @@ import 'package:real_estate_mobile/features/agents/presentation/screens/agent_ed
 import 'package:real_estate_mobile/features/profile/presentation/screens/payment_success_screen.dart';
 import 'package:real_estate_mobile/features/splash/presentation/screens/splash_screen.dart';
 import 'package:real_estate_mobile/features/onboarding/presentation/screens/onboarding_screen.dart';
+import 'package:real_estate_mobile/features/auth/presentation/screens/verify_2fa_screen.dart';
+import 'package:real_estate_mobile/features/support_chat/presentation/screens/support_chat_screen.dart';
 
 final routerProvider = Provider<GoRouter>((ref) {
   final authRefreshNotifier = _AuthRefreshNotifier();
@@ -36,7 +38,7 @@ final routerProvider = Provider<GoRouter>((ref) {
 
   // Public routes accessible without authentication (matching web middleware)
   const publicRoutes = ['/home', '/agents/search', '/agents/detail', '/faq', '/contact', '/about'];
-  const authRoutes = ['/login', '/signup'];
+  const authRoutes = ['/login', '/signup', '/verify-2fa'];
 
   return GoRouter(
     initialLocation: '/splash',
@@ -52,19 +54,20 @@ final routerProvider = Provider<GoRouter>((ref) {
         (route) => location == route || location.startsWith('$route/'),
       );
 
-      // Never redirect away from splash or onboarding — they handle their own navigation
+      // Never redirect away from splash or onboarding
       if (location == '/splash' || location == '/onboarding') return null;
 
       // While checking auth status, don't redirect
       if (isLoading) return null;
 
-      // If authenticated and on auth page (login/signup), go to home
-      if (isAuthenticated && isAuthRoute) return '/home';
+      // Public routes and auth routes are always accessible (no auth required)
+      if (isPublicRoute || isAuthRoute) {
+        // Only redirect: if authenticated user is on login/signup, send to home
+        if (isAuthenticated && isAuthRoute) return '/home';
+        return null;
+      }
 
-      // Public routes are always accessible
-      if (isPublicRoute || isAuthRoute) return null;
-
-      // Protected routes require authentication — redirect to login
+      // Protected routes require authentication
       if (!isAuthenticated) return '/login';
 
       return null;
@@ -91,6 +94,10 @@ final routerProvider = Provider<GoRouter>((ref) {
         path: '/signup',
         builder: (context, state) => const SignupScreen(),
       ),
+      GoRoute(
+        path: '/verify-2fa',
+        builder: (context, state) => const Verify2faScreen(),
+      ),
 
       // All main app routes wrapped in AppShell (shared header + bottom nav)
       ShellRoute(
@@ -201,6 +208,14 @@ final routerProvider = Provider<GoRouter>((ref) {
               transitionsBuilder: _fadeTransition,
             ),
           ),
+          GoRoute(
+            path: '/support/chat',
+            pageBuilder: (context, state) => CustomTransitionPage(
+              key: state.pageKey,
+              child: const SupportChatScreen(),
+              transitionsBuilder: _fadeTransition,
+            ),
+          ),
           GoRoute(
             path: '/payment-success',
             pageBuilder: (context, state) {
@@ -228,9 +243,8 @@ class _HomeRouteWrapper extends ConsumerWidget {
   Widget build(BuildContext context, WidgetRef ref) {
     final authState = ref.watch(authProvider);
 
-    // Show loader while auth is initializing or loading
-    if (authState.status == AuthStatus.initial ||
-        authState.status == AuthStatus.loading) {
+    // Show loader only while auth is actively loading (checking token)
+    if (authState.status == AuthStatus.loading) {
       return const Center(
         child: CircularProgressIndicator(
           color: AppColors.accentOrange,