fix

apps/api/internal/processing/categorize_ai.go

@@ -358,14 +358,28 @@ func runCategorizeStep(ctx context.Context, e *Engine, companyID string, out *St
 	return nil
 }
 
+// MappedCategorySourceKey marks a mapped_data.category this pipeline wrote itself.
+//
+// Without it the write is indistinguishable from a feed-supplied category on the
+// next run, so Review showed an AI-chosen category as the product's "Original" and
+// every product looked already-categorised. $4 carries the step that chose it
+// (mapped / vector / llm); only "mapped" means the feed actually supplied one.
+const MappedCategorySourceKey = "category_source"
+
 // persistMappedCategorySQL writes a taxonomy unique_id onto mapped_data.category
-// when the mapped value is still empty (so Products UI + reprocess stick).
+// when the mapped value is still empty (so Products UI + reprocess stick), and
+// records who chose it alongside.
 const persistMappedCategorySQL = `
 	UPDATE raw_products
 	SET mapped_data = jsonb_set(
-		COALESCE(mapped_data, '{}'::jsonb),
-		'{category}',
-		to_jsonb($3::text),
+		jsonb_set(
+			COALESCE(mapped_data, '{}'::jsonb),
+			'{category}',
+			to_jsonb($3::text),
+			true
+		),
+		'{category_source}',
+		to_jsonb($4::text),
 		true
 	),
 	updated_at = now()