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/monitor/trace/TraceManager.tsx

@@ -37,6 +37,7 @@ import { Separator } from '@/components/ui/separator';
 import { ScrollArea } from '@/components/ui/scroll-area';
 import { toast } from 'sonner';
 import { traceApi } from '@/api';
+import type { JsonData } from '@/types/common';
 
 interface Trace {
   id: string;
@@ -502,7 +503,7 @@ const TraceManager: React.FC = () => {
                     <span className="w-20 text-right">耗时</span>
                   </div>
                   {/* Span树渲染 */}
-                  {(selectedTrace as Record<string, any>).spans && buildSpanTree((selectedTrace as Record<string, any>).spans).map(span => (
+                  {(selectedTrace as JsonData).spans && buildSpanTree((selectedTrace as JsonData).spans).map(span => (
                     <SpanTreeNode key={span.spanId} span={span} level={0} totalDuration={selectedTrace.duration} />
                   ))}
                 </div>