fix: 停止每次拉单补回已删会员；后台移除标记充值单撤销

ddhq 不再全量 sync 充值单；jian_huiyuan 标记权益已撤销防复活；clumber 只读 huiyuangoumai。

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

backend/views/kefu.py

@@ -673,11 +673,10 @@ class KefuUpdateDashouView(APIView):
                         return Response({'code': 403, 'msg': '无权限给打手减会员'})
                     if not huiyuan_id:
                         return Response({'code': 400, 'msg': '缺少会员ID'})
-                    try:
-                        record = Huiyuangoumai.query.get(yonghu_id=dashou_id, huiyuan_id=huiyuan_id)
-                    except Huiyuangoumai.DoesNotExist:
-                        return Response({'code': 404, 'msg': '该打手未购买此会员'})
-                    record.delete()
+                    from jituan.services.member_recharge import revoke_member_entitlement_admin
+                    removed, err = revoke_member_entitlement_admin(dashou_id, huiyuan_id)
+                    if err:
+                        return Response({'code': 404, 'msg': err})
                     write_xiugai_log(
                         yonghuid=dashou_id,
                         xiugaiid=kefu.user.Phone,