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/cloud/BillingRuleDialog.tsx

@@ -23,18 +23,19 @@ import { Loader2 } from 'lucide-react';
 import { toast } from 'sonner';
 import { billingApi } from '@/api';
 import { providerLabels } from './CloudBillingHelpers';
+import type { JsonData } from '@/types/common';
 
 const emptyRule = { name: '', provider: '', metric: 'daily', threshold: '', operator: '>', enabled: true };
 
 interface Props {
   open: boolean;
   onOpenChange: (open: boolean) => void;
-  editingRule: any | null;
+  editingRule: JsonData | null;
   onSuccess: () => void;
 }
 
 export function BillingRuleDialog({ open, onOpenChange, editingRule, onSuccess }: Props) {
-  const [form, setForm] = useState<any>(emptyRule);
+  const [form, setForm] = useState<JsonData>(emptyRule);
   const [submitting, setSubmitting] = useState(false);
 
   // 弹窗打开时初始化表单 // Logan.Li
@@ -71,7 +72,7 @@ export function BillingRuleDialog({ open, onOpenChange, editingRule, onSuccess }
       onSuccess();
       toast('保存成功');
     } catch (e) {
-      toast.error('保存失败', { description: (e as Record<string, any>).message });
+      toast.error('保存失败', { description: (e as JsonData).message });
     } finally {
       setSubmitting(false);
     }