if len(segmentImport.Labels) > 0 {

			// If no labels succeeded, delete the orphaned segment
			if len(segmentImport.Labels) == 0 {
				_, err = tx.ExecContext(ctx, `DELETE FROM segment WHERE id = ?`, segmentID)
				if err != nil {
					errors = append(errors, ImportSegmentError{
						File:    filepath.Base(sf.DataPath),
						Stage:   "import",
						Message: fmt.Sprintf("failed to delete orphaned segment: %v", err),
					})
				}
				// Remove from fileUpdate since no labels were imported
				delete(fileUpdate.LabelIDs, segIdx)
			} else {

## [2026-03-14] Import Segments - Fix Orphaned Segments
**Fix:** Segments with no valid labels are now deleted from the database.

When a segment's labels all fail validation (e.g., missing species in mapping), the segment
was previously left orphaned in the database with no labels. Now the segment is deleted within
the same transaction, maintaining data integrity.
**Changes:**
- `tools/import_segments.go` — Delete orphaned segments when all labels fail validation