feat: restore monitoring button in nav bar

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

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

@@ -18,6 +18,8 @@ For commercial licensing, please contact support@quantumnous.com
 */
 
 import React from 'react';
+import { Button } from '@douyinfe/semi-ui';
+import { Activity } from 'lucide-react';
 import NewYearButton from './NewYearButton';
 import NotificationButton from './NotificationButton';
 import ThemeToggle from './ThemeToggle';
@@ -51,6 +53,16 @@ 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} />