优化发布群租客清退与历史消息

backend/internal/modules/order/lifecycle.go

@@ -244,8 +244,10 @@ func (r *Repository) Cancel(ctx context.Context, userID uint64, orderID uint64)
 		}
 
 		beforeStatus := order.Status
+		now := time.Now()
 		order.Status = orderStatusCancelled
 		order.HandoffStatus = handoffStatusCancelled
+		order.SettledAt = &now
 		orderID := order.ID
 		if beforeStatus == orderStatusPendingHandoff {
 			totalCent := order.RentAmountCent + order.DepositAmountCent
@@ -280,13 +282,6 @@ func (r *Repository) Cancel(ctx context.Context, userID uint64, orderID uint64)
 			return err
 		}
 
-		// 订单取消,移出租客(仅付款后取消需要移出)
-		if beforeStatus == orderStatusPendingHandoff {
-			if err := chat.RemoveRenterFromListingConversation(tx, listing.ID, order.RenterID); err != nil {
-				// 移出失败不阻塞订单取消
-			}
-		}
-
 		if err := tx.Save(&order).Error; err != nil {
 			return err
 		}