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

merchant_ops/urls.py

@@ -5,7 +5,7 @@ from merchant_ops.views_manage import (
     StaffMemberListView, StaffMemberUpdateRoleView, StaffMemberRemoveView,
     StaffMemberDisableView, StaffMemberUpdatePermsView,
     StaffRoleListView, StaffRoleCreateView, StaffRoleSetPermsView,
-    StaffWalletAllocateView, StaffWalletLedgerView, StaffAuditListView,
+    StaffWalletAllocateView, StaffWalletRevokeView, StaffWalletLedgerView, StaffAuditListView,
     StaffRankView,
 )
 from merchant_ops.views_staff import StaffBindView, StaffMeView
@@ -36,6 +36,7 @@ urlpatterns = [
     path('role/create', StaffRoleCreateView.as_view()),
     path('role/set-perms', StaffRoleSetPermsView.as_view()),
     path('wallet/allocate', StaffWalletAllocateView.as_view()),
+    path('wallet/revoke', StaffWalletRevokeView.as_view()),
     path('wallet/ledger', StaffWalletLedgerView.as_view()),
     path('audit/list', StaffAuditListView.as_view()),
     path('rank', StaffRankView.as_view()),