fix: remove hardcoded monitoring URL from nav bar

The monitoring feature is already available in the application,
no need for a hardcoded external IP link in the header.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

web/src/components/layout/headerbar/ActionButtons.jsx

@@ -18,8 +18,7 @@ For commercial licensing, please contact support@quantumnous.com
 */
 
 import React from 'react';
-import { Button } from '@douyinfe/semi-ui';
-import { Activity } from 'lucide-react';
+import React from 'react';
 import NewYearButton from './NewYearButton';
 import NotificationButton from './NotificationButton';
 import ThemeToggle from './ThemeToggle';
@@ -53,16 +52,6 @@ const ActionButtons = ({
         t={t}
       />
 
-      {/* 分组监控 */}
-      <Button
-        icon={<Activity size={18} />}
-        aria-label={t('分组监控')}
-        theme='borderless'
-        type='tertiary'
-        className='!p-1.5 !text-current focus:!bg-semi-color-fill-1 !rounded-full !bg-semi-color-fill-0 hover:!bg-semi-color-fill-1'
-        onClick={() => window.open('http://107.175.54.36:3099/status/claude', '_blank')}
-      />
-
       {/* 主题切换 */}
       <ThemeToggle theme={theme} onThemeToggle={onThemeToggle} t={t} />