fix: add missing imports (useUserStore, Cpu)

frontend/src/components/server/ServerManager.tsx

@@ -37,11 +37,13 @@ import {
   Cloud,
   FileSpreadsheet,
   RefreshCw,
+  Cpu,
 } from 'lucide-react';
 import { serverApi } from '@/services/api';
 import { ServerStatsCards } from './ServerStatsCards';
 import { useConfirm } from '@/components/ui/confirm-dialog';
 import { toast } from 'sonner';
+import { useUserStore } from '@/store';
 import { CloudServerImport } from './CloudServerImport';
 import { TerminalDialog } from './TerminalDialog';
 import { ExcelServerImport } from './ExcelServerImport';