fix

apps/api/internal/processing/pipeline.go

@@ -1701,7 +1701,13 @@ func (p *Pipeline) processOne(ctx context.Context, companyID, jobID uuid.UUID, i
 	// Stick taxonomy unique_id onto mapped_data.category when still empty so the
 	// Products UI (reads mapped) and reprocess keep the AI/vector/mapped pick.
 	if cat := strings.TrimSpace(result.Category); cat != "" {
-		if _, err := tx.Exec(ctx, persistMappedCategorySQL, it.RawID, companyID, cat); err != nil {
+		// Record who chose it: a category this pipeline derived must not read back
+		// as the feed's own on the next run (see MappedCategorySourceKey).
+		catSource, _ := result.FieldSources["category"].(string)
+		if strings.TrimSpace(catSource) == "" {
+			catSource = "pipeline"
+		}
+		if _, err := tx.Exec(ctx, persistMappedCategorySQL, it.RawID, companyID, cat, catSource); err != nil {
 			return false, 0, result, fmt.Errorf("persist mapped category: %w", err)
 		}
 	}