新增退款时应当快照当时的资产

internal/service/refund/service.go

@@ -111,6 +111,10 @@ func (s *Service) Create(ctx context.Context, req *dto.CreateRefundRequest) (*dt
 		RefundNo:              generateRefundNo(),
 		OrderID:               req.OrderID,
 		OrderNo:               order.OrderNo,
+		OrderType:             order.OrderType,
+		AssetIdentifier:       order.AssetIdentifier,
+		IotCardID:             order.IotCardID,
+		DeviceID:              order.DeviceID,
 		PackageUsageID:        req.PackageUsageID,
 		ShopID:                shopID,
 		ActualReceivedAmount:  req.ActualReceivedAmount,
@@ -650,11 +654,22 @@ func generateRefundNo() string {
 
 // buildRefundResponse 将退款 Model 转换为 DTO 响应
 func buildRefundResponse(r *model.RefundRequest) *dto.RefundResponse {
+	assetType := ""
+	if r.OrderType == model.OrderTypeSingleCard {
+		assetType = "card"
+	} else if r.OrderType == model.OrderTypeDevice {
+		assetType = "device"
+	}
+
 	resp := &dto.RefundResponse{
 		ID:                    r.ID,
 		RefundNo:              r.RefundNo,
 		OrderID:               r.OrderID,
 		OrderNo:               r.OrderNo,
+		AssetIdentifier:       r.AssetIdentifier,
+		AssetType:             assetType,
+		IotCardID:             r.IotCardID,
+		DeviceID:              r.DeviceID,
 		PackageUsageID:        r.PackageUsageID,
 		ShopID:                r.ShopID,
 		ShopName:              r.ShopName,