完善订单交接结账流程留痕

backend/internal/modules/order/presenter.go

@@ -107,6 +107,8 @@ func (row orderRow) toAdminDTO() OrderDTO {
 		GrowthPointsAwarded:         row.GrowthPointsAwarded,
 		GrowthPointsAwardedAt:       row.GrowthPointsAwardedAt,
 		AccountSnapshot:             row.AccountSnapshot,
+		AccountSource:               effectiveAccountSource(row.RentalOrder),
+		SourceChannel:               row.SourceChannel,
 		Status:                      row.Status,
 		HandoffStatus:               row.HandoffStatus,
 		HandoffMode:                 effectiveHandoffMode(row.RentalOrder),
@@ -131,6 +133,13 @@ func (row orderRow) toAdminDTO() OrderDTO {
 	}
 }
 
+func effectiveAccountSource(order model.RentalOrder) string {
+	if order.AccountSource != "" {
+		return order.AccountSource
+	}
+	return "internal"
+}
+
 func (row orderRow) toDTOForUser(userID uint64) OrderDTO {
 	dto := row.toAdminDTO()
 	dto.AdminActions = nil
@@ -146,6 +155,9 @@ func (row orderRow) toDTOForUser(userID uint64) OrderDTO {
 	dto.OfflineSettlementRemark = ""
 	dto.OfflineSettledBy = nil
 	dto.OfflineSettledAt = nil
+	// 外部来源渠道属于后台经营信息，仅在管理员订单详情展示。
+	dto.AccountSource = ""
+	dto.SourceChannel = ""
 	applyOrderPriceView(&dto, row.RentalOrder, userID)
 	return dto
 }