fix(t243): allow deleting unreferenced procurement drafts

backend-api/internal/transport/webui/usecase_adapter.go

@@ -309,7 +309,7 @@ func procurementStatusLabel(
 	case domain.ProcurementBlocked:
 		return "资料阻塞"
 	case domain.ProcurementNeedsImage:
-		return "需要参考图"
+		return "需要参考图，尚未生成任务"
 	case domain.ProcurementReady:
 		return "可以生成任务"
 	case domain.ProcurementTaskCreated:
@@ -954,8 +954,12 @@ func mapUsecaseError(err error) error {
 		return err
 	}
 	var public error
-	if typed.Code == "FREIGHT_ORDER_IN_USE" {
-		public = ErrFreightOrderInUse
+	if typed.Code == "FREIGHT_ORDER_HAS_PURCHASE_TASK" {
+		public = ErrFreightOrderHasPurchaseTask
+		return &adapterError{public: public, cause: err}
+	}
+	if typed.Code == "FREIGHT_ORDER_HAS_REFERENCE" {
+		public = ErrFreightOrderHasReference
 		return &adapterError{public: public, cause: err}
 	}
 	switch typed.Kind {