添加了快照功能支持，支持定时快照和回滚快照

frontend/src/App.tsx

@@ -10,6 +10,7 @@ import AuditLogs from './pages/AuditLogs'
 import ApiIntegration from './pages/ApiIntegration'
 import Settings from './pages/Settings'
 import ImageManagement from './pages/ImageManagement'
+import Snapshots from './pages/Snapshots'
 import Layout from './components/Layout'
 
 function ProtectedRoute({ children }: { children: React.ReactNode }) {
@@ -57,6 +58,7 @@ function App() {
         <Route path="container/:id" element={<ContainerDetail />} />
         <Route path="oversell" element={<Oversell />} />
         <Route path="security" element={<Security />} />
+        <Route path="snapshots" element={<Snapshots />} />
         <Route path="audit-logs" element={<AuditLogs />} />
         <Route path="api-integration" element={<ApiIntegration />} />
         <Route path="settings" element={<Settings />} />