fix: ServerForm 缺少 ssh_key/credential_id 字段, selIds.has→includes

frontend/src/components/monitor/dashboard/GrafanaDashboard.tsx

@@ -107,7 +107,7 @@ const AgentTab: React.FC = () => {
   // 批量升级 Agent 到最新版本
   const [batchUpgrading, setBatchUpgrading] = useState(false);
   const handleBatchUpgrade = async () => {
-    const online = hosts.filter((h: any) => selIds.has(h.server_id) && h.agent_status === 'online');
+    const online = hosts.filter((h: any) => selIds.includes(h.server_id) && h.agent_status === 'online');
     if (online.length === 0) { toast.error('所选主机中没有在线 Agent'); return; }
     const ids = online.map((h: any) => h.server_id);
     const ok = await _confirm({ title: '批量升级 Agent', description: `确定升级选中的 ${ids.length} 台在线主机的 Agent 到最新版本？升级将在后台异步执行。`, confirmText: '升级', variant: 'default' });

frontend/src/components/server/ServerManager.tsx

@@ -268,6 +268,8 @@ export function ServerManager() {
       username: server.username || 'root',
       auth_type: server.auth_type || 'password',
       password: '',
+      ssh_key: '',
+      credential_id: null as number | null,
       os: server.os || '',
       cpu: String(server.cpu || ''),
       memory: server.memory ? String(Math.round(server.memory / 1024)) : '', // MB → GB