feat(q1): 前端类型安全治理完成 — any 83→40, P0 全部 done

- types/monitor.ts: 新增 6 个运行时记录类型(AlertEventRecord/AlertRuleRecord/
  AgentHostRecord/CronJobRecord/CertExpiryRecord/ApprovalWorkflowStepRecord)
- types/common.ts: 新增 OptionItem 通用下拉类型
- 组件级 any 清理 43 处:
  - AlertEventsTab/AlertRulesTab/AlertChannelDialog/alertShared (19处)
  - AuditOperationsTab normalizeLog + 筛选器 (8处)
  - CronJobManager 任务列表/编辑/操作 (6处)
  - AgentMonitor 主机列表/命令执行 (5处)
  - DashboardRecent 5 张卡片组件 (5处)
  - AlertManager 状态类型对齐 (联动修复)
  - Dashboard.tsx 调用端类型对齐 (联动修复)
- AlertChannel 接口新增 test_status 字段
- ESLint any: 83→40 (<50 目标达成)
- tsc -b / tsc --noEmit: 零错误
- npm run build: ✓ built in 17.11s
- 9/9 核心 API 回归通过

frontend/src/components/agent/AgentMonitor.tsx

@@ -5,6 +5,7 @@ import { agentApi } from '@/api';
 import { AgentWizard } from './AgentWizard';
 import { HostDetailDialog } from './HostDetailDialog';
 import { isOnline, timeAgo, asList } from './agentUtils';
+import type { AgentHostRecord } from '@/types';
 import { Card, CardContent } from '@/components/ui/card';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
@@ -40,10 +41,10 @@ import {
 // ============ 组件 ============
 
 export function AgentMonitor() {
-  const [hosts, setHosts] = useState<any[]>([]);
+  const [hosts, setHosts] = useState<AgentHostRecord[]>([]);
   const [loading, setLoading] = useState(true);
   const [refreshing, setRefreshing] = useState(false);
-  const [selectedHost, setSelectedHost] = useState<any>(null);
+  const [selectedHost, setSelectedHost] = useState<AgentHostRecord | null>(null);
   const [wizardOpen, setWizardOpen] = useState(false);
   const timerRef = useRef<ReturnType<typeof setInterval> | null>(null);
 
@@ -53,13 +54,13 @@ export function AgentMonitor() {
   const [cmdCommand, setCmdCommand] = useState('');
   const [cmdTimeout, setCmdTimeout] = useState(30);
   const [cmdSubmitting, setCmdSubmitting] = useState(false);
-  const [cmdResult, setCmdResult] = useState<any>(null);
+  const [cmdResult, setCmdResult] = useState<{ status: string; result?: string; output?: string; error?: string } | null>(null);
 
   const loadLatest = useCallback(async (silent = false) => {
     if (!silent) setRefreshing(true);
     try {
       const data = await agentApi.getLatest();
-      const list = asList(data);
+      const list = asList(data) as AgentHostRecord[];
       setHosts(list);
       // 同步选中主机的最新数据
       if (selectedHost) {
@@ -102,15 +103,16 @@ export function AgentMonitor() {
     setCmdSubmitting(true);
     setCmdResult(null);
     try {
-      const res: Record<string, any> = await agentApi.execCommand({
+      const res = await agentApi.execCommand({
         hostname: cmdHost,
         command: cmdCommand.trim(),
         timeout: Number(cmdTimeout) || 30,
-      });
+      }) as Record<string, unknown>;
+      const resData = (res?.data ?? {}) as Record<string, unknown>;
       setCmdResult({
         status: res?.code === 200 ? 'completed' : 'failed',
-        result: res?.data?.output || res?.message || '无输出',
-        error: res?.data?.error,
+        result: (resData.output as string) || (res?.message as string) || '无输出',
+        error: resData.error as string | undefined,
       });
     } catch (err) {
       setCmdResult({ status: 'failed', result: err?.message || '执行失败' });
@@ -209,7 +211,7 @@ export function AgentMonitor() {
             const cpu = Number(host.cpu_percent ?? host.cpu ?? 0);
             const mem = Number(host.mem_percent ?? host.mem ?? 0);
             const disk = Number(host.disk_percent ?? host.disk ?? 0);
-            const ports: Record<string, any>[] = Array.isArray(host.ports) ? host.ports : [];
+            const ports: Record<string, unknown>[] = Array.isArray(host.ports) ? (host.ports as Record<string, unknown>[]) : [];
             return (
               <Card
                 key={host.hostname}