환경 초기화 및 벤더 리포지토리 스켈레톤 도입

lib/features/masters/vendor/data/dtos/vendor_dto.dart

@@ -0,0 +1,80 @@
+import '../../domain/entities/vendor.dart';
+
+/// 벤더 DTO (JSON 직렬화/역직렬화)
+class VendorDto {
+  VendorDto({
+    this.id,
+    required this.vendorCode,
+    required this.vendorName,
+    this.isActive = true,
+    this.isDeleted = false,
+    this.note,
+    this.createdAt,
+    this.updatedAt,
+  });
+
+  final int? id;
+  final String vendorCode;
+  final String vendorName;
+  final bool isActive;
+  final bool isDeleted;
+  final String? note;
+  final DateTime? createdAt;
+  final DateTime? updatedAt;
+
+  factory VendorDto.fromJson(Map<String, dynamic> json) {
+    return VendorDto(
+      id: json['id'] as int?,
+      vendorCode: json['vendor_code'] as String,
+      vendorName: json['vendor_name'] as String,
+      isActive: (json['is_active'] as bool?) ?? true,
+      isDeleted: (json['is_deleted'] as bool?) ?? false,
+      note: json['note'] as String?,
+      createdAt: _parseDate(json['created_at']),
+      updatedAt: _parseDate(json['updated_at']),
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      if (id != null) 'id': id,
+      'vendor_code': vendorCode,
+      'vendor_name': vendorName,
+      'is_active': isActive,
+      'is_deleted': isDeleted,
+      'note': note,
+      'created_at': createdAt?.toIso8601String(),
+      'updated_at': updatedAt?.toIso8601String(),
+    };
+  }
+
+  Vendor toEntity() => Vendor(
+        id: id,
+        vendorCode: vendorCode,
+        vendorName: vendorName,
+        isActive: isActive,
+        isDeleted: isDeleted,
+        note: note,
+        createdAt: createdAt,
+        updatedAt: updatedAt,
+      );
+
+  static VendorDto fromEntity(Vendor entity) => VendorDto(
+        id: entity.id,
+        vendorCode: entity.vendorCode,
+        vendorName: entity.vendorName,
+        isActive: entity.isActive,
+        isDeleted: entity.isDeleted,
+        note: entity.note,
+        createdAt: entity.createdAt,
+        updatedAt: entity.updatedAt,
+      );
+}
+
+DateTime? _parseDate(Object? value) {
+  if (value == null) return null;
+  if (value is DateTime) return value;
+  if (value is String) return DateTime.tryParse(value);
+  return null;
+}
+