update api

lib/features/auth/domain/repositories/auth_repository.dart

@@ -0,0 +1,36 @@
+import 'package:dartz/dartz.dart';
+import '../../../../core/errors/failures.dart';
+import '../entities/auth_response.dart';
+import '../entities/user.dart';
+
+/// Abstract repository for authentication operations
+abstract class AuthRepository {
+  /// Login user with email and password
+  Future<Either<Failure, AuthResponse>> login({
+    required String email,
+    required String password,
+  });
+
+  /// Register new user
+  Future<Either<Failure, AuthResponse>> register({
+    required String name,
+    required String email,
+    required String password,
+    List<String> roles = const ['user'],
+  });
+
+  /// Get current user profile
+  Future<Either<Failure, User>> getProfile();
+
+  /// Refresh access token
+  Future<Either<Failure, AuthResponse>> refreshToken();
+
+  /// Logout user (clear local token)
+  Future<Either<Failure, void>> logout();
+
+  /// Check if user is authenticated
+  Future<bool> isAuthenticated();
+
+  /// Get stored access token
+  Future<String?> getAccessToken();
+}