feat: add system governance pages

frontend/src/app/router.tsx

@@ -2,6 +2,11 @@ import * as React from 'react'
 
 import { DesignSystemPreview } from '@/features/design-system/DesignSystemPreview'
 import { SolutionListPage } from '@/features/solutions/SolutionListPage'
+import { AuditLogPage } from '@/features/system/AuditLogPage'
+import { SystemMenusPage } from '@/features/system/SystemMenusPage'
+import { SystemRolesPage } from '@/features/system/SystemRolesPage'
+import { SystemUserGroupsPage } from '@/features/system/SystemUserGroupsPage'
+import { SystemUsersPage } from '@/features/system/SystemUsersPage'
 import { TicketCreatePage } from '@/features/tickets/TicketCreatePage'
 import { TicketDetailPage } from '@/features/tickets/TicketDetailPage'
 import { TicketListPage } from '@/features/tickets/TicketListPage'
@@ -24,6 +29,26 @@ export function Router() {
     return <DesignSystemPreview />
   }
 
+  if (route === '/audit') {
+    return <AuditLogPage />
+  }
+
+  if (route === '/system/users') {
+    return <SystemUsersPage />
+  }
+
+  if (route === '/system/user-groups') {
+    return <SystemUserGroupsPage />
+  }
+
+  if (route === '/system/roles') {
+    return <SystemRolesPage />
+  }
+
+  if (route === '/system/menus') {
+    return <SystemMenusPage />
+  }
+
   if (route === '/') {
     return <WorkbenchPage />
   }