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/approval/ApprovalTemplateTab.tsx

@@ -3,8 +3,9 @@ import { Card, CardContent, CardHeader, CardTitle, CardDescription } from '@/com
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
 import { Filter, Edit, GitBranch, ArrowRight } from 'lucide-react';
+import type { JsonData } from '@/types/common';
 
-function parseSteps( steps: any) {
+function parseSteps(steps: JsonData) {
   if (Array.isArray(steps)) return steps;
   if (typeof steps === 'string') {
     try {
@@ -31,14 +32,14 @@ const getApprovalTypeColor = (value: string): string =>
   APPROVAL_TYPE_OPTIONS.find((o) => o.value === value)?.color || 'var(--dg-text-secondary)';
 
 // 模拟审批流程图
-function renderFlowChart( flow: any) {
+function renderFlowChart(flow: JsonData) {
   const nodes = parseSteps(flow.steps);
   if (nodes.length === 0) {
     return <div className="text-[var(--dg-text-muted)] text-center py-4">暂无流程节点</div>;
   }
   return (
     <div className="flex items-center gap-2 overflow-x-auto py-4">
-      {nodes.map(( node: any, index: number) => (
+      {nodes.map((node: JsonData, index: number) => (
         <div key={node.id || index} className="flex items-center">
           <div
             className={cn(
@@ -66,7 +67,7 @@ function renderFlowChart( flow: any) {
 }
 
 interface ApprovalTemplateTabProps {
-  filteredTemplates: any[];
+  filteredTemplates: JsonData[];
   templateTypeFilter: string;
   setTemplateTypeFilter: (value: string) => void;
 }