修复发布后图片无法看到bug

backend/internal/modules/listing/service.go

@@ -179,6 +179,20 @@ func (s *Service) FindPublic(id uint64) (*ListingDTO, error) {
 	return s.repo.FindPublic(id)
 }
 
+func (s *Service) FindPublicCoverKey(id uint64) (string, error) {
+	if s.repo == nil {
+		return "", ErrDependencyUnavailable
+	}
+	return s.repo.FindPublicCoverKey(id)
+}
+
+func (s *Service) FindPublicScreenshotKey(id uint64, index int) (string, error) {
+	if s.repo == nil {
+		return "", ErrDependencyUnavailable
+	}
+	return s.repo.FindPublicScreenshotKey(id, index)
+}
+
 func (s *Service) FindMine(ownerID uint64, id uint64) (*ListingDTO, error) {
 	if s.repo == nil {
 		return nil, ErrDependencyUnavailable