fix: Mark dataset as failed for PostGIS errors

internal/service/dataset.go

@@ -457,6 +457,17 @@ func (s *DatasetService) Parse(ctx context.Context, id uuid.UUID) error {
 	return s.repo.MarkParsed(ctx, id, cols)
 }
 
+// MarkFailed records a terminal processing failure on a dataset, moving it out
+// of any in-progress status. The worker calls this when a job returns an error
+// (e.g. a PostGIS insert failure) so the dataset is not left stuck. Marking a
+// dataset that no longer exists is not treated as an error.
+func (s *DatasetService) MarkFailed(ctx context.Context, id uuid.UUID, reason string) error {
+	if err := s.repo.MarkParseFailed(ctx, id, reason); err != nil && !errors.Is(err, domain.ErrNotFound) {
+		return err
+	}
+	return nil
+}
+
 func (s *DatasetService) fetchObject(ctx context.Context, key string) ([]byte, error) {
 	obj, err := s.store.Get(ctx, key)
 	if err != nil {