feat: 사용자 관리 API 연동 구현

- UserRemoteDataSource: 사용자 CRUD, 상태 변경, 비밀번호 변경, 중복 확인 API 구현
- UserService: DTO-Model 변환 로직 및 역할/전화번호 매핑 처리
- UserListController: ChangeNotifier 패턴 적용, 페이지네이션, 검색, 필터링 기능 추가
- UserFormController: API 연동, username 중복 확인 기능 추가
- user_form.dart: username/password 필드 추가 및 실시간 검증
- user_list_redesign.dart: Provider 패턴 적용, 무한 스크롤 구현
- equipment_out_form_controller.dart: 구문 오류 수정
- API 통합 진행률: 85% (사용자 관리 100% 완료)

lib/data/models/user/user_dto.g.dart

@@ -0,0 +1,133 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'user_dto.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+_$UserDtoImpl _$$UserDtoImplFromJson(Map<String, dynamic> json) =>
+    _$UserDtoImpl(
+      id: (json['id'] as num).toInt(),
+      username: json['username'] as String,
+      email: json['email'] as String,
+      name: json['name'] as String,
+      phone: json['phone'] as String?,
+      role: json['role'] as String,
+      companyId: (json['company_id'] as num?)?.toInt(),
+      branchId: (json['branch_id'] as num?)?.toInt(),
+      isActive: json['is_active'] as bool,
+      createdAt: DateTime.parse(json['created_at'] as String),
+      updatedAt: DateTime.parse(json['updated_at'] as String),
+    );
+
+Map<String, dynamic> _$$UserDtoImplToJson(_$UserDtoImpl instance) =>
+    <String, dynamic>{
+      'id': instance.id,
+      'username': instance.username,
+      'email': instance.email,
+      'name': instance.name,
+      'phone': instance.phone,
+      'role': instance.role,
+      'company_id': instance.companyId,
+      'branch_id': instance.branchId,
+      'is_active': instance.isActive,
+      'created_at': instance.createdAt.toIso8601String(),
+      'updated_at': instance.updatedAt.toIso8601String(),
+    };
+
+_$CreateUserRequestImpl _$$CreateUserRequestImplFromJson(
+        Map<String, dynamic> json) =>
+    _$CreateUserRequestImpl(
+      username: json['username'] as String,
+      email: json['email'] as String,
+      password: json['password'] as String,
+      name: json['name'] as String,
+      phone: json['phone'] as String?,
+      role: json['role'] as String,
+      companyId: (json['company_id'] as num?)?.toInt(),
+      branchId: (json['branch_id'] as num?)?.toInt(),
+    );
+
+Map<String, dynamic> _$$CreateUserRequestImplToJson(
+        _$CreateUserRequestImpl instance) =>
+    <String, dynamic>{
+      'username': instance.username,
+      'email': instance.email,
+      'password': instance.password,
+      'name': instance.name,
+      'phone': instance.phone,
+      'role': instance.role,
+      'company_id': instance.companyId,
+      'branch_id': instance.branchId,
+    };
+
+_$UpdateUserRequestImpl _$$UpdateUserRequestImplFromJson(
+        Map<String, dynamic> json) =>
+    _$UpdateUserRequestImpl(
+      name: json['name'] as String?,
+      email: json['email'] as String?,
+      password: json['password'] as String?,
+      phone: json['phone'] as String?,
+      role: json['role'] as String?,
+      companyId: (json['company_id'] as num?)?.toInt(),
+      branchId: (json['branch_id'] as num?)?.toInt(),
+    );
+
+Map<String, dynamic> _$$UpdateUserRequestImplToJson(
+        _$UpdateUserRequestImpl instance) =>
+    <String, dynamic>{
+      'name': instance.name,
+      'email': instance.email,
+      'password': instance.password,
+      'phone': instance.phone,
+      'role': instance.role,
+      'company_id': instance.companyId,
+      'branch_id': instance.branchId,
+    };
+
+_$ChangeStatusRequestImpl _$$ChangeStatusRequestImplFromJson(
+        Map<String, dynamic> json) =>
+    _$ChangeStatusRequestImpl(
+      isActive: json['is_active'] as bool,
+    );
+
+Map<String, dynamic> _$$ChangeStatusRequestImplToJson(
+        _$ChangeStatusRequestImpl instance) =>
+    <String, dynamic>{
+      'is_active': instance.isActive,
+    };
+
+_$ChangePasswordRequestImpl _$$ChangePasswordRequestImplFromJson(
+        Map<String, dynamic> json) =>
+    _$ChangePasswordRequestImpl(
+      currentPassword: json['current_password'] as String,
+      newPassword: json['new_password'] as String,
+    );
+
+Map<String, dynamic> _$$ChangePasswordRequestImplToJson(
+        _$ChangePasswordRequestImpl instance) =>
+    <String, dynamic>{
+      'current_password': instance.currentPassword,
+      'new_password': instance.newPassword,
+    };
+
+_$UserListDtoImpl _$$UserListDtoImplFromJson(Map<String, dynamic> json) =>
+    _$UserListDtoImpl(
+      users: (json['users'] as List<dynamic>)
+          .map((e) => UserDto.fromJson(e as Map<String, dynamic>))
+          .toList(),
+      total: (json['total'] as num).toInt(),
+      page: (json['page'] as num).toInt(),
+      perPage: (json['per_page'] as num).toInt(),
+      totalPages: (json['total_pages'] as num).toInt(),
+    );
+
+Map<String, dynamic> _$$UserListDtoImplToJson(_$UserListDtoImpl instance) =>
+    <String, dynamic>{
+      'users': instance.users,
+      'total': instance.total,
+      'page': instance.page,
+      'per_page': instance.perPage,
+      'total_pages': instance.totalPages,
+    };