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/dashboard/Dashboard.tsx

@@ -13,8 +13,14 @@ import {
   ServerStatusCard,
   KubernetesClusterCard,
 } from './DashboardRecent';
+import type {
+  DashboardRelease,
+  DashboardServer,
+  DashboardCluster,
+} from './DashboardRecent';
 import { SkeletonDashboard } from '@/components/layout/SkeletonCard';
 import type { JsonData } from '@/types/common';
+import type { AlertEventRecord, CertExpiryRecord } from '@/types';
 
 /**
  * Dashboard - 优化后的仪表盘页面
@@ -32,11 +38,11 @@ export function Dashboard() {
   const [initialLoading, setInitialLoading] = useState(true);
   const [refreshing, setRefreshing] = useState(false);
   const [stats, setStats] = useState<JsonData>(null);
-  const [servers, setServers] = useState<JsonData[]>([]);
-  const [clusters, setClusters] = useState<JsonData[]>([]);
-  const [alerts, setAlerts] = useState<JsonData[]>([]);
-  const [releases, setReleases] = useState<JsonData[]>([]);
-  const [expCerts, setExpCerts] = useState<JsonData[]>([]);
+  const [servers, setServers] = useState<DashboardServer[]>([]);
+  const [clusters, setClusters] = useState<DashboardCluster[]>([]);
+  const [alerts, setAlerts] = useState<AlertEventRecord[]>([]);
+  const [releases, setReleases] = useState<DashboardRelease[]>([]);
+  const [expCerts, setExpCerts] = useState<CertExpiryRecord[]>([]);
   const [metrics, setMetrics] = useState<JsonData[]>([]);
 
   const refreshData = useCallback(async () => {