fix todo

lib/features/todos/data/models/todo_model.dart

@@ -0,0 +1,46 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+import '../../domain/entities/todo.dart';
+
+part 'todo_model.freezed.dart';
+part 'todo_model.g.dart';
+
+@freezed
+class TodoModel with _$TodoModel {
+  const factory TodoModel({
+    required int id,
+    required String title,
+    String? description,
+    required bool completed,
+    required String userId,
+    @JsonKey(includeFromJson: false, includeToJson: false) Map<String, dynamic>? user,
+    DateTime? createdAt,
+    DateTime? updatedAt,
+  }) = _TodoModel;
+
+  const TodoModel._();
+
+  factory TodoModel.fromJson(Map<String, dynamic> json) =>
+      _$TodoModelFromJson(json);
+
+  /// Convert to domain entity
+  Todo toEntity() => Todo(
+        id: id,
+        title: title,
+        description: description,
+        completed: completed,
+        userId: userId,
+        createdAt: createdAt,
+        updatedAt: updatedAt,
+      );
+
+  /// Create from domain entity
+  factory TodoModel.fromEntity(Todo todo) => TodoModel(
+        id: todo.id,
+        title: todo.title,
+        description: todo.description,
+        completed: todo.completed,
+        userId: todo.userId,
+        createdAt: todo.createdAt,
+        updatedAt: todo.updatedAt,
+      );
+}