fix

apps/api/internal/catalog/import_csv.go

@@ -237,6 +237,13 @@ func (s *Service) flushCategoryBatch(ctx context.Context, companyID uuid.UUID, b
 		if err != nil {
 			return err
 		}
+		nameByUID := make(map[string]string, len(insUIDs))
+		for i, uid := range insUIDs {
+			if i < len(insNames) {
+				nameByUID[uid] = insNames[i]
+			}
+		}
+		var seedFormulas []DefaultFormulaTarget
 		for rows.Next() {
 			var id uuid.UUID
 			var uid, path string
@@ -246,6 +253,7 @@ func (s *Service) flushCategoryBatch(ctx context.Context, companyID uuid.UUID, b
 				return err
 			}
 			known[uid] = categoryPathInfo{id: id, path: path, level: level}
+			seedFormulas = append(seedFormulas, DefaultFormulaTarget{ID: id, UniqueID: uid, Name: nameByUID[uid]})
 			res.Created++
 		}
 		err = rows.Err()
@@ -253,6 +261,11 @@ func (s *Service) flushCategoryBatch(ctx context.Context, companyID uuid.UUID, b
 		if err != nil {
 			return err
 		}
+		// Imported categories get the platform-default formula too, so an imported
+		// taxonomy enhances into formula-shaped copy without further setup.
+		if err := ApplyDefaultCategoryFormulas(ctx, tx, companyID, seedFormulas...); err != nil {
+			return err
+		}
 		pendingInserts = next
 	}