feat(orders): 号主可从自己的列表隐藏已结束订单

只写入隐藏时间，订单和款项仍保留给租客与后台。详情按钮固定对齐，删除跟在后面。

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/internal/modules/order/service.go

@@ -34,6 +34,7 @@ var (
 	ErrDepositHoldAmountEmpty      = errors.New("deposit hold amount empty")
 	ErrOfflineSettlementCannotMark = errors.New("offline settlement cannot mark")
 	ErrInvalidSellerHandoffStatus  = errors.New("invalid seller handoff status")
+	ErrOrderCannotHide             = errors.New("order cannot hide")
 )
 
 const internalOrderHours = 24
@@ -63,6 +64,16 @@ func (s *Service) Cancel(ctx context.Context, userID uint64, orderID uint64) err
 	return s.repo.Cancel(ctx, userID, orderID)
 }
 
+func (s *Service) HideForOwner(ctx context.Context, userID uint64, orderID uint64) error {
+	if s.repo == nil {
+		return ErrDependencyUnavailable
+	}
+	if orderID == 0 {
+		return ErrOrderCannotHide
+	}
+	return s.repo.HideForOwner(ctx, userID, orderID)
+}
+
 func (s *Service) Pay(ctx context.Context, userID uint64, orderID uint64) error {
 	if s.repo == nil {
 		return ErrDependencyUnavailable