backup: 사용하지 않는 파일 삭제 전 복구 지점

- 전체 371개 파일 중 82개 미사용 파일 식별
- Phase 1: 33개 파일 삭제 예정 (100% 안전)
- Phase 2: 30개 파일 삭제 검토 예정
- Phase 3: 19개 파일 수동 검토 예정

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

lib/data/models/model/model_dto.dart

@@ -0,0 +1,52 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'model_dto.freezed.dart';
+part 'model_dto.g.dart';
+
+@freezed
+class ModelDto with _$ModelDto {
+  const factory ModelDto({
+    required int id,
+    @JsonKey(name: 'vendors_id') required int vendorsId,
+    @JsonKey(name: 'vendor_name') String? vendorName, // JOIN 필드
+    required String name,
+    @JsonKey(name: 'is_deleted') required bool isDeleted,
+    @JsonKey(name: 'registered_at') required DateTime registeredAt,
+    @JsonKey(name: 'updated_at') DateTime? updatedAt,
+  }) = _ModelDto;
+
+  factory ModelDto.fromJson(Map<String, dynamic> json) => _$ModelDtoFromJson(json);
+}
+
+@freezed
+class ModelListDto with _$ModelListDto {
+  const factory ModelListDto({
+    @JsonKey(name: 'data') required List<ModelDto> items,
+    required int total,
+    required int page,
+    @JsonKey(name: 'page_size') required int perPage,
+    @JsonKey(name: 'total_pages') required int totalPages,
+  }) = _ModelListDto;
+
+  factory ModelListDto.fromJson(Map<String, dynamic> json) => _$ModelListDtoFromJson(json);
+}
+
+@freezed
+class CreateModelRequest with _$CreateModelRequest {
+  const factory CreateModelRequest({
+    @JsonKey(name: 'vendors_id') required int vendorsId,
+    required String name,
+  }) = _CreateModelRequest;
+
+  factory CreateModelRequest.fromJson(Map<String, dynamic> json) => _$CreateModelRequestFromJson(json);
+}
+
+@freezed
+class UpdateModelRequest with _$UpdateModelRequest {
+  const factory UpdateModelRequest({
+    @JsonKey(name: 'vendors_id') int? vendorsId,
+    String? name,
+  }) = _UpdateModelRequest;
+
+  factory UpdateModelRequest.fromJson(Map<String, dynamic> json) => _$UpdateModelRequestFromJson(json);
+}