fix(t243): allow deleting unreferenced procurement drafts

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

@@ -561,10 +561,17 @@ func (h *Handler) DeleteFreightOrder(ctx *gin.Context) {
 			OrderID:     orderID,
 		},
 	)
-	if errors.Is(err, ErrFreightOrderInUse) {
+	if errors.Is(err, ErrFreightOrderHasPurchaseTask) {
 		ctx.Redirect(
 			http.StatusSeeOther,
-			"/freight/"+pathEscape(orderID)+"?notice=delete-conflict",
+			"/freight/"+pathEscape(orderID)+"?notice=delete-task-conflict",
+		)
+		return
+	}
+	if errors.Is(err, ErrFreightOrderHasReference) {
+		ctx.Redirect(
+			http.StatusSeeOther,
+			"/freight/"+pathEscape(orderID)+"?notice=delete-reference-conflict",
 		)
 		return
 	}
@@ -720,8 +727,10 @@ func freightNotice(value string) string {
 		return "ERP 货运单已同步，货运信息和商品明细已更新。"
 	case "deleted":
 		return "货运单已从本系统删除，不影响顺运宝 ERP。"
-	case "delete-conflict":
-		return "该货运单已进入采购流程，不能删除。"
+	case "delete-task-conflict":
+		return "该货运单已生成采购任务，不能删除。"
+	case "delete-reference-conflict":
+		return "该货运单已绑定采购参考图，不能删除。"
 	default:
 		return ""
 	}