feat(alert): A2 告警引擎分布式安全 — Redis 分布式锁(SetNX)

- Cache 接口新增 SetNX 方法(go-redis 原子 / redka check-then-set 单副本安全)
- AlertEngine 改造为支持分布式锁: tryAcquireLock/releaseLock/GetEngineStatus
- 多副本部署时仅 Leader 执行告警检查, 60s TTL 防死锁, fail-open 容错
- 新增 GET /alerts/engine/status 监控端点(is_leader/instance_id/lock_holder)
- 修复 GrafanaDashboard.tsx Panel.options 类型不匹配导致构建中断
- 同步未提交的前端类型安全迁移(140+ 文件)
- ROADMAP/TDD_PLAN/PROJECT_EVALUATION 三文档同步更新

验证: go build 零错误, Docker 部署 healthy, 引擎状态端点正常,
锁竞争测试通过(非 Leader 跳过检查), 5/5 核心 API 回归通过

frontend/src/components/system/SystemSettingsTab.tsx

@@ -11,6 +11,7 @@ import {
 } from '@/components/ui/select';
 import { Lock, History, Key, Settings, Network, RefreshCw, Loader2 } from 'lucide-react';
 import { LdapManagementSection } from './LdapManagementSection';
+import type { JsonData } from '@/types/common';
 
 export interface LdapFormData {
   ldap_host: string;
@@ -67,13 +68,13 @@ interface SystemSettingsTabProps {
   ldapUserTesting: boolean;
   ldapUserTestResult: unknown;
   handleLdapUserTest: () => void;
-  editLdapUser: any | null;
-  setEditLdapUser: (u: any | null) => void;
+  editLdapUser: JsonData | null;
+  setEditLdapUser: (u: JsonData | null) => void;
   editLdapForm: { cn: string; mail: string; phone: string; title: string };
   setEditLdapForm: React.Dispatch<React.SetStateAction<{ cn: string; mail: string; phone: string; title: string }>>;
   handleUpdateLdapUser: () => void;
   handleDeleteLDAPEntry: (dn: string, silent?: boolean) => void;
-  openEditLdapUser: ( user: any) => void;
+  openEditLdapUser: (user: JsonData) => void;
 }
 
 export function SystemSettingsTab(props: SystemSettingsTabProps) {