feat: 组队招募（/zudui）+ 结单/自动结算/罚款挂钩

新增 Team 表与接口；进8强制锁、组队分账优先且失败不回退全额队长。

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

users/views/kefu_orders.py

@@ -602,6 +602,12 @@ class KefuChangeDashouView(APIView):
             order.AssignedCS = current_user.UserUID  # 记录处理客服ID
             order.save()
 
+            try:
+                from orders.services.team_recruit import on_order_change_player
+                on_order_change_player(order.OrderID, actor_uid=getattr(current_user, 'UserUID', '') or 'kefu')
+            except Exception as e:
+                logger.error(f'组队换打手作废失败: {e}')
+
         return Response({'code': 0, 'msg': '更换打手成功'})