第二轮：客服额度资金闭环与收回额度

- 划额度扣商家余额，客服派单/链接只扣个人额度
- 新增 wallet/revoke 收回未使用额度，权限 wallet_revoke
- 客服额度单撤销/退款只释放额度，不再误退商家余额
- 链接待填单(13)可撤销；总管/财务可划收额度

users/views.py

@@ -8114,12 +8114,14 @@ class KefuMerchantRefundView(APIView):
                 except (User.DoesNotExist, ObjectDoesNotExist):
                     logger.warning(f"商家退款：打手 {jiedan_dashou_id} 不存在，跳过更新")
 
-            # 更新商家
+            # 更新商家（客服额度出资的订单不退商家余额，仅释放子客服额度）
             try:
+                from merchant_ops.services.wallet import is_staff_quota_order
                 shangjia_user = User.query.get(UserUID=shangjia_id)
                 shangjia_profile = shangjia_user.ShopProfile
                 shangjia_profile.tuikuan += 1
-                shangjia_profile.yue += jine
+                if not is_staff_quota_order(dingdan_id):
+                    shangjia_profile.yue += jine
                 shangjia_profile.save()
             except (User.DoesNotExist, ObjectDoesNotExist):
                 logger.warning(f"商家退款：商家 {shangjia_id} 不存在，跳过更新")