feat: 商家子客服 merchant_ops 模块与专用 API

users/views.py

@@ -4899,6 +4899,16 @@ class ShangjiaZhuceView(APIView):
             # 用户不是商家，继续注册流程
             pass
 
+        # 2.5 子客服身份互斥：有效客服不可认证商家
+        from merchant_ops.services.authz import assert_no_active_staff_when_merchant_register
+        try:
+            assert_no_active_staff_when_merchant_register(current_user)
+        except Exception as e:
+            from merchant_ops.services.authz import StaffAuthError
+            if isinstance(e, StaffAuthError):
+                return Response({'code': 403, 'message': e.msg, 'data': None}, status=status.HTTP_403_FORBIDDEN)
+            raise
+
         # 3. 根据邀请码查找对应的管理员
         try:
             # 从管理员表查找邀请码