feat: 后台添加商家 + 龙先生 lsx 俱乐部/邀请链种子

支持客服按用户UID开通商家（分俱乐部校验）；新增 seed_club_lsx、seed_lsx_invite_data。

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

backend/views/kefu.py

@@ -1110,9 +1110,115 @@ class KefuUpdateShangjiaView(APIView):
         return Response({'code': 400, 'msg': '未知操作'})
 
 
+class KefuAddShangjiaView(APIView):
+    """
+    后台按用户ID开通商家（分俱乐部，禁止前端自助注册场景使用）
+    POST /houtai/tjsj  或  /jituan/houtai/tjsj
+    参数：username, yonghuid（用户业务ID）, nicheng（可选）
+    权限：1100a
+    """
+    permission_classes = []
+    parser_classes = [JSONParser]
 
+    def post(self, request):
+        username = request.data.get('username', '').strip()
+        yonghuid = str(request.data.get('yonghuid', '')).strip()
+        nicheng_in = (request.data.get('nicheng') or '').strip()
 
+        if not username:
+            return Response({'code': 401, 'msg': '缺少username'})
+        if not yonghuid:
+            return Response({'code': 400, 'msg': '请填写用户ID'})
 
+        kefu, permissions = verify_kefu_permission(request, username)
+        if kefu is None:
+            return permissions
+        if '1100a' not in permissions:
+            return Response({'code': 403, 'msg': '无权限添加商家（需要1100a）'})
+
+        try:
+            user = User.query.get(UserUID=yonghuid)
+        except User.DoesNotExist:
+            return Response({'code': 404, 'msg': '用户不存在，请确认用户ID'})
+
+        denied = forbid_if_user_out_of_scope(request, user)
+        if denied:
+            return denied
+
+        if not getattr(user, 'IsActive', True):
+            return Response({'code': 400, 'msg': '该账号已被封禁，无法开通商家'})
+
+        try:
+            dashou = user.DashouProfile
+            if int(getattr(dashou, 'zhanghaozhuangtai', 1) or 0) != 1:
+                return Response({'code': 400, 'msg': '该账号已被封禁，无法开通商家'})
+        except UserDashou.DoesNotExist:
+            pass
+        except Exception:
+            pass
+
+        if UserShangjia.query.filter(user=user).exists():
+            return Response({'code': 400, 'msg': '该用户已是商家，无需重复添加'})
+
+        from merchant_ops.services.authz import assert_no_active_staff_when_merchant_register, StaffAuthError
+        try:
+            assert_no_active_staff_when_merchant_register(user)
+        except StaffAuthError as e:
+            return Response({'code': 403, 'msg': getattr(e, 'msg', None) or str(e)})
+        except Exception:
+            pass
+
+        boss_nickname = '普通商家'
+        try:
+            boss = user.BossProfile
+            if boss.nickname and boss.nickname.strip():
+                boss_nickname = boss.nickname.strip()
+        except UserBoss.DoesNotExist:
+            pass
+
+        shangjia_nicheng = nicheng_in or boss_nickname
+        if UserShangjia.query.filter(nicheng=shangjia_nicheng).exists():
+            shangjia_nicheng = f"{shangjia_nicheng}{random.randint(1000, 9999)}"
+
+        try:
+            with transaction.atomic():
+                shop = UserShangjia.query.create(
+                    user=user,
+                    nicheng=shangjia_nicheng,
+                    zhuangtai=1,
+                    yue=0.00,
+                    fabu=0,
+                    tuikuan=0,
+                    chengjiao=0,
+                    jinridingdan=0,
+                    jinriliushui=0.00,
+                    jinyuedingdan=0,
+                    jinyueliushui=0.00,
+                    dianhua='',
+                    wechat='',
+                )
+                write_xiugai_log(
+                    yonghuid=yonghuid,
+                    xiugaiid=kefu.user.Phone,
+                    leixing=XIUGAI_LEIXING_SHANGJIA,
+                    qitashuoming=(
+                        f'【后台】添加商家：用户ID={yonghuid}，昵称={shop.nicheng}，'
+                        f'操作人={kefu.user.Phone}'
+                    ),
+                )
+        except Exception as e:
+            logger.exception('后台添加商家失败')
+            return Response({'code': 500, 'msg': f'添加失败：{e}'})
+
+        return Response({
+            'code': 0,
+            'msg': '商家添加成功',
+            'data': {
+                'yonghuid': yonghuid,
+                'nicheng': shop.nicheng,
+                'zhuangtai': shop.zhuangtai,
+            },
+        })
 
 
 class KefuChatPermissionsView(APIView):