fix: KefuLoginView 客服登录改用 Phone 字段查询

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

users/views.py

@@ -6727,12 +6727,13 @@ class KefuLoginView(APIView):
         # 2. 获取客户端真实IP
         client_ip = self.get_client_ip(request)
 
-        # 3. 查询该手机号下所有客服账号（GVSDSDK User 字段为 Phone，客服在 user_kefu 表）
-        kefu_candidates = UserKefu.query.filter(
-            user__Phone=phone,
-        ).select_related('user')
+        # 3. 查询该手机号下所有客服账号（User 字段为 Phone，与 backend 创建客服校验写法一致）
+        user_mains = User.query.filter(
+            Phone=phone,
+            kefu_profile__isnull=False,
+        ).select_related('kefu_profile')
 
-        if not kefu_candidates.exists():
+        if not user_mains.exists():
             logger.warning(f"登录失败，手机号不存在或非客服: {phone}, IP: {client_ip}")
             return Response({
                 'code': 1,
@@ -6744,8 +6745,8 @@ class KefuLoginView(APIView):
         target_user = None
         target_kefu = None
 
-        for kefu in kefu_candidates:
-            user = kefu.user
+        for user in user_mains:
+            kefu = user.kefu_profile
             # 验证主密码（明文比较，按您的要求）
             if user.UserPassword != password:
                 continue