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/kubernetes/YamlImportDialog.tsx

@@ -6,6 +6,7 @@ import { ModalOverlay } from '@/components/ui/modal-overlay';
 import { useToast } from '@/hooks/use-toast';
 import { kubernetesApi } from '@/api';
 import { YamlCodeMirror } from './YamlCodeMirror';
+import type { JsonData } from '@/types/common';
 
 interface YamlImportDialogProps {
   clusterCode: string;
@@ -30,7 +31,7 @@ export function YamlImportDialog({ clusterCode, onClose, onApplied }: YamlImport
       onApplied?.();
       onClose();
     } catch (e) {
-      toast({ title: '导入失败', description: (e as Record<string, any>).message, variant: 'destructive' });
+      toast({ title: '导入失败', description: (e as JsonData).message, variant: 'destructive' });
     } finally { setApplying(false); }
   };