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

lib/features/auth/presentation/providers/auth_provider.dart

@@ -1,11 +1,12 @@
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:real_estate_mobile/core/network/api_exceptions.dart';
+import 'package:real_estate_mobile/core/storage/secure_storage.dart';
 import 'package:real_estate_mobile/features/auth/data/auth_repository.dart';
 import 'package:real_estate_mobile/features/auth/data/models/register_request.dart';
 import 'package:real_estate_mobile/features/auth/data/models/user_model.dart';
 
 // Auth state
-enum AuthStatus { initial, loading, success, error }
+enum AuthStatus { initial, loading, authenticated, error }
 
 class AuthState {
   final AuthStatus status;
@@ -49,7 +50,37 @@ class AuthState {
 class AuthNotifier extends StateNotifier<AuthState> {
   final AuthRepository _repository;
 
-  AuthNotifier(this._repository) : super(const AuthState());
+  AuthNotifier(this._repository) : super(const AuthState()) {
+    checkAuthStatus();
+  }
+
+  Future<void> checkAuthStatus() async {
+    final token = await SecureStorage.getAccessToken();
+    if (token == null) {
+      state = state.copyWith(status: AuthStatus.initial);
+      return;
+    }
+
+    state = state.copyWith(status: AuthStatus.loading);
+
+    try {
+      final user = await _repository.getMe();
+      state = state.copyWith(
+        status: AuthStatus.authenticated,
+        user: user,
+      );
+    } catch (_) {
+      // Token is invalid/expired — clear and show login
+      await SecureStorage.clearTokens();
+      state = state.copyWith(status: AuthStatus.initial);
+    }
+  }
+
+  Future<void> logout() async {
+    state = state.copyWith(status: AuthStatus.loading);
+    await _repository.logout();
+    state = const AuthState();
+  }
 
   Future<void> login({
     required String email,
@@ -76,7 +107,7 @@ class AuthNotifier extends StateNotifier<AuthState> {
       }
 
       state = state.copyWith(
-        status: AuthStatus.success,
+        status: AuthStatus.authenticated,
         user: result['user'] as UserModel,
       );
     } on ApiException catch (e) {
@@ -124,7 +155,7 @@ class AuthNotifier extends StateNotifier<AuthState> {
       );
 
       state = state.copyWith(
-        status: AuthStatus.success,
+        status: AuthStatus.authenticated,
         user: user,
         registeredEmail: email,
       );