사용하지 않는 파일 정리 전 백업 (Phase 10 완료 후 상태)

lib/data/repositories/user_repository_impl.dart

@@ -42,8 +42,8 @@ class UserRepositoryImpl implements UserRepository {
         size: result.perPage,
         totalElements: result.total,
         totalPages: result.totalPages,
-        first: result.first,
-        last: result.last,
+        first: result.page == 1, // 첫 페이지 여부
+        last: result.page >= result.totalPages, // 마지막 페이지 여부
       );
       
       return Right(paginatedResult);
@@ -75,21 +75,17 @@ class UserRepositoryImpl implements UserRepository {
   /// 사용자 계정 생성
   @override
   Future<Either<Failure, User>> createUser({
-    required String username,
-    required String email,
-    required String password,
     required String name,
+    String? email,
     String? phone,
-    required UserRole role,
+    required int companiesId,
   }) async {
     try {
-      final request = CreateUserRequest(
-        username: username,
-        email: email,
-        password: password,
+      final request = UserRequestDto(
         name: name,
+        email: email,
         phone: phone,
-        role: role.name,
+        companiesId: companiesId,
       );
       
       final dto = await _remoteDataSource.createUser(request);
@@ -108,7 +104,7 @@ class UserRepositoryImpl implements UserRepository {
   @override
   Future<Either<Failure, User>> updateUser(int id, User user, {String? newPassword}) async {
     try {
-      final request = UpdateUserRequest.fromDomain(user, newPassword: newPassword);
+      final request = UserUpdateRequestDto.fromDomain(user, newPassword: newPassword);
       
       final dto = await _remoteDataSource.updateUser(id, request);
       final updatedUser = dto.toDomainModel();
@@ -137,12 +133,12 @@ class UserRepositoryImpl implements UserRepository {
     }
   }
 
-  /// 사용자명 사용 가능 여부 확인
+  /// 사용자 이름 중복 확인 (백엔드 API v1에서는 미지원)
   @override
-  Future<Either<Failure, bool>> checkUsernameAvailability(String username) async {
+  Future<Either<Failure, bool>> checkUsernameAvailability(String name) async {
     try {
-      final response = await _remoteDataSource.checkUsernameAvailability(username);
-      return Right(response.available);
+      // 백엔드에서 지원하지 않으므로 항상 true 반환
+      return const Right(true);
     } on ApiException catch (e) {
       return Left(_mapApiExceptionToFailure(e));
     } catch (e) {