update api

lib/features/auth/data/models/user_model.dart

@@ -0,0 +1,66 @@
+import '../../domain/entities/user.dart';
+
+/// User model for data layer (extends User entity)
+class UserModel extends User {
+  const UserModel({
+    required super.id,
+    required super.name,
+    required super.email,
+    required super.roles,
+    required super.isActive,
+    required super.createdAt,
+    required super.updatedAt,
+  });
+
+  /// Create UserModel from JSON
+  factory UserModel.fromJson(Map<String, dynamic> json) {
+    return UserModel(
+      id: json['id'] as String,
+      name: json['name'] as String,
+      email: json['email'] as String,
+      roles: (json['roles'] as List<dynamic>).cast<String>(),
+      isActive: json['isActive'] as bool? ?? true,
+      createdAt: DateTime.parse(json['createdAt'] as String),
+      updatedAt: DateTime.parse(json['updatedAt'] as String),
+    );
+  }
+
+  /// Convert UserModel to JSON
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'name': name,
+      'email': email,
+      'roles': roles,
+      'isActive': isActive,
+      'createdAt': createdAt.toIso8601String(),
+      'updatedAt': updatedAt.toIso8601String(),
+    };
+  }
+
+  /// Create UserModel from User entity
+  factory UserModel.fromEntity(User user) {
+    return UserModel(
+      id: user.id,
+      name: user.name,
+      email: user.email,
+      roles: user.roles,
+      isActive: user.isActive,
+      createdAt: user.createdAt,
+      updatedAt: user.updatedAt,
+    );
+  }
+
+  /// Convert to User entity
+  User toEntity() {
+    return User(
+      id: id,
+      name: name,
+      email: email,
+      roles: roles,
+      isActive: isActive,
+      createdAt: createdAt,
+      updatedAt: updatedAt,
+    );
+  }
+}