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/server/ExcelServerImport.tsx

@@ -24,6 +24,7 @@ import {
   Loader2,
 } from 'lucide-react';
 import { regionApi, serverApi, credentialApi } from '@/api';
+import type { JsonData } from '@/types/common';
 
 interface RegionOption {
   id: string;
@@ -116,7 +117,7 @@ export function ExcelServerImport({ open, onClose }: ExcelServerImportProps) {
   const [regions, setRegions] = useState<RegionOption[]>([]);
   const [isImporting, setIsImporting] = useState(false);
   // 凭据选择 // Logan.Li
-  const [credentials, setCredentials] = useState<any[]>([]);
+  const [credentials, setCredentials] = useState<JsonData[]>([]);
   const [selectedCredentialId, setSelectedCredentialId] = useState<string>('');
   const [defaultSshPort, setDefaultSshPort] = useState('22');
 
@@ -132,7 +133,7 @@ export function ExcelServerImport({ open, onClose }: ExcelServerImportProps) {
         ]);
         if (cancelled) return;
         const list = regionResp?.list ?? [];
-        setRegions(list.map(( r: any) => ({
+        setRegions(list.map((r: JsonData) => ({
           id: String(r.id ?? ''),
           name: r.name ?? '',
           code: r.code ?? '',
@@ -363,7 +364,7 @@ export function ExcelServerImport({ open, onClose }: ExcelServerImportProps) {
                   className="w-full px-3 py-2 bg-[var(--dg-bg-secondary)] border border-[var(--dg-border)] rounded-md text-[var(--dg-text-primary)] text-sm"
                 >
                   <option value="">不使用凭据（后续手动配置）</option>
-                  {credentials.map(( c: any) => (
+                  {credentials.map((c: JsonData) => (
                     <option key={c.id} value={String(c.id)}>
                       {c.type === 'ssh_key' ? '🔑' : c.type === 'api_token' ? '🌐' : '🔒'} {c.name} ({c.type === 'ssh_key' ? 'SSH密钥' : c.type === 'api_token' ? 'API Token' : '密码'})
                     </option>