Enhance authentication flow and user role management

- Updated AuthViewModel to hydrate user data from storage on initialization.
- Added method to AuthRepository for retrieving stored customer data.
- Enhanced AuthService to save and retrieve customer data from SharedPreferences.
- Refactored UI components to use context.watch for user role updates in MeetingTimeDialog, TenderDetailActions, and TendersPage.
- Improved navigation logic in final completion pages to handle user interactions more effectively.

lib/data/services/auth_service.dart

@@ -6,6 +6,7 @@ import 'package:firebase_messaging/firebase_messaging.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:tm_app/core/utils/logger.dart';
 import 'package:tm_app/data/services/api/auth_api.dart';
+import 'package:tm_app/data/services/model/customer/customer.dart';
 import 'package:tm_app/data/services/model/forgot_password_response/forgot_password_response_model.dart';
 import 'package:tm_app/data/services/model/login_response/login_response_model.dart';
 import 'package:tm_app/data/services/model/logout_response/logout_response.dart';
@@ -55,9 +56,17 @@ class AuthService {
       final token = result.value.data.accessToken;
       AppLogger().info('🔑 Bearer token: $token');
       final refreshToken = result.value.data.refreshToken;
+      final customer = result.value.data.customer;
 
       await prefs.setString('bearer', token!);
       await prefs.setString('refresh_token', refreshToken!);
+
+      // Save customer data as JSON string
+      if (customer != null) {
+        final customerJson = jsonEncode(customer.toJson());
+        await prefs.setString('customer_data', customerJson);
+        AppLogger().info('👤 Customer data saved to preferences');
+      }
     }
     return result;
   }
@@ -68,6 +77,12 @@ class AuthService {
       method: 'DELETE',
       (json) => LogoutResponse.fromJson(json),
     );
+
+    // Clear local data after successful logout
+    if (result is Ok<LogoutResponse>) {
+      await localLogout();
+    }
+
     return result;
   }
 
@@ -89,7 +104,8 @@ class AuthService {
     final prefs = await SharedPreferences.getInstance();
     await prefs.remove('bearer');
     await prefs.remove('refresh_token');
-    appLogger.info('tokens cleared!');
+    await prefs.remove('customer_data');
+    appLogger.info('tokens and customer data cleared!');
   }
 
   Future<Result<ForgotPasswordResponseModel>> forgotPassword({
@@ -131,4 +147,19 @@ class AuthService {
     }
     return const Result.ok(true);
   }
+
+  Future<Customer?> getStoredCustomer() async {
+    final prefs = await SharedPreferences.getInstance();
+    final customerJson = prefs.getString('customer_data');
+    if (customerJson == null) {
+      return null;
+    }
+    try {
+      final customerMap = jsonDecode(customerJson) as Map<String, dynamic>;
+      return Customer.fromJson(customerMap);
+    } catch (e) {
+      AppLogger().error('❌ Failed to parse stored customer data: $e');
+      return null;
+    }
+  }
 }