refactor: 移除全局单例、修复分层违规、统一错误与响应

internal/service/profile_service.go

@@ -1,6 +1,7 @@
 package service
 
 import (
+	apperrors "carrotskin/internal/errors"
 	"carrotskin/internal/model"
 	"carrotskin/internal/repository"
 	"carrotskin/pkg/database"
@@ -100,7 +101,7 @@ func (s *profileService) GetByUUID(ctx context.Context, uuid string) (*model.Pro
 	profile2, err := s.profileRepo.FindByUUID(ctx, uuid)
 	if err != nil {
 		if errors.Is(err, gorm.ErrRecordNotFound) {
-			return nil, ErrProfileNotFound
+			return nil, apperrors.ErrProfileNotFound
 		}
 		return nil, fmt.Errorf("查询档案失败: %w", err)
 	}
@@ -140,13 +141,13 @@ func (s *profileService) Update(ctx context.Context, uuid string, userID int64,
 	profile, err := s.profileRepo.FindByUUID(ctx, uuid)
 	if err != nil {
 		if errors.Is(err, gorm.ErrRecordNotFound) {
-			return nil, ErrProfileNotFound
+			return nil, apperrors.ErrProfileNotFound
 		}
 		return nil, fmt.Errorf("查询档案失败: %w", err)
 	}
 
 	if profile.UserID != userID {
-		return nil, ErrProfileNoPermission
+		return nil, apperrors.ErrProfileNoPermission
 	}
 
 	// 检查角色名是否重复
@@ -187,13 +188,13 @@ func (s *profileService) Delete(ctx context.Context, uuid string, userID int64)
 	profile, err := s.profileRepo.FindByUUID(ctx, uuid)
 	if err != nil {
 		if errors.Is(err, gorm.ErrRecordNotFound) {
-			return ErrProfileNotFound
+			return apperrors.ErrProfileNotFound
 		}
 		return fmt.Errorf("查询档案失败: %w", err)
 	}
 
 	if profile.UserID != userID {
-		return ErrProfileNoPermission
+		return apperrors.ErrProfileNoPermission
 	}
 
 	if err := s.profileRepo.Delete(ctx, uuid); err != nil {