feat: 修复菜单路由+角色权限展示+操作审计+WebSSH终端审计

1. 菜单路由修复: /roles /users /logs-audit /terminal-audit 等系统管理子菜单
   通过 useLocation 同步 URL 路径到 Tab 选中状态

2. WebSSH错误提示优化: Go error → 友好中文提示
   i/o timeout → 连接超时（防火墙或网络不通）
   connection refused → 端口未开放/SSH服务未启动
   cannot find session key → 密码或密钥认证失败
   连接提示增加端口号显示

3. 角色权限展示: 31项权限种子数据 (资产管理/云资源/K8s/发布/监控/AIOps/系统管理)
   4个角色权限分配: admin(31) ops(27) developer(16) viewer(3)
   前端角色卡片显示权限名称而非原始code

4. 操作审计修复: 删除/创建/更新服务器均记录审计日志
   批量删除逐条记录审计

5. WebSSH终端审计 (JumpServer模式):
   - 新增 TerminalSession 模型记录会话(用户/服务器/时间/状态)
   - webshell.go 录制终端输出(1MB上限)
   - 终端审计页面: 会话列表+状态筛选+批量删除
   - 操作回放: xterm.js 重放录制的终端输出
   - WS连接增加JWT鉴权+token传递

frontend/src/components/system/SystemManager.tsx

@@ -1,14 +1,16 @@
 import { useState, useEffect } from 'react';
+import { useLocation } from 'react-router-dom';
 import { useConfirm } from '@/components/ui/confirm-dialog';
 import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs';
 import { Badge } from '@/components/ui/badge';
-import { CheckCircle, XCircle, Users, Shield, FileCode, Settings } from 'lucide-react';
+import { CheckCircle, XCircle, Users, Shield, FileCode, Settings, TerminalSquare } from 'lucide-react';
 import { userApi } from '@/services/api';
 import type { Role } from '@/types';
 import { SystemUserTab } from './SystemUserTab';
 import { SystemRolesTab } from './SystemRolesTab';
 import { SystemLogsTab } from './SystemLogsTab';
 import { SystemSettingsTab } from './SystemSettingsTab';
+import { TerminalSessionsTab } from './TerminalSessionsTab';
 import { useLdapManagement } from './useLdapManagement';
 import type { UserFormData } from './UserFormDialog';
 
@@ -36,7 +38,24 @@ const emptyForm: UserFormData = {
 
 export function SystemManager() {
   const confirm = useConfirm();
-  const [activeTab, setActiveTab] = useState('users');
+  const location = useLocation();
+  // 侧边栏菜单路径映射到 Tab // Logan.Li
+  const pathToTab: Record<string, string> = {
+    '/users': 'users',
+    '/roles': 'roles',
+    '/logs-audit': 'logs',
+    '/terminal-audit': 'terminal',
+    '/settings': 'settings',
+  };
+  const [activeTab, setActiveTab] = useState(pathToTab[location.pathname] || 'users');
+
+  // URL 变化时同步 Tab（侧边栏菜单点击触发） // Logan.Li
+  useEffect(() => {
+    const tab = pathToTab[location.pathname];
+    if (tab && tab !== activeTab) {
+      setActiveTab(tab);
+    }
+  }, [location.pathname]);
   const [searchQuery, setSearchQuery] = useState('');
   const [users, setUsers] = useState<any[]>([]);
   const [loading, setLoading] = useState(true);
@@ -238,6 +257,10 @@ export function SystemManager() {
             <FileCode className="h-4 w-4 mr-2" />
             操作审计
           </TabsTrigger>
+          <TabsTrigger value="terminal" className="data-[state=active]:bg-slate-700">
+            <TerminalSquare className="h-4 w-4 mr-2" />
+            终端审计
+          </TabsTrigger>
           <TabsTrigger value="settings" className="data-[state=active]:bg-slate-700">
             <Settings className="h-4 w-4 mr-2" />
             系统设置
@@ -299,6 +322,10 @@ export function SystemManager() {
           />
         </TabsContent>
 
+        <TabsContent value="terminal" className="mt-4 space-y-4">
+          <TerminalSessionsTab />
+        </TabsContent>
+
         <TabsContent value="settings" className="mt-4">
           <SystemSettingsTab {...ldap.settingsTabProps} />
         </TabsContent>