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/TerminalDialog.tsx

@@ -15,6 +15,7 @@ import { attachTerminalResize, fitTerminal, mountXterm } from '@/lib/xterm-utils
 import { useUserStore } from '@/store';
 import { credentialApi, serverCredentialApi } from '@/api';
 import { toast } from 'sonner';
+import type { JsonData } from '@/types/common';
 
 interface TerminalDialogProps {
   open: boolean;
@@ -46,7 +47,7 @@ export function TerminalDialog({
   const [fullscreen, setFullscreen] = useState(false);
 
   // 凭据选择状态（hasAuth=false 时显示） // Logan.Li
-  const [credentials, setCredentials] = useState<any[]>([]);
+  const [credentials, setCredentials] = useState<JsonData[]>([]);
   const [selectedCredId, setSelectedCredId] = useState<string>('');
   const [assigning, setAssigning] = useState(false);
   const [authReady, setAuthReady] = useState(hasAuth); // 认证就绪标志
@@ -54,7 +55,7 @@ export function TerminalDialog({
   // 加载凭据列表
   useEffect(() => {
     if (!open || hasAuth) return;
-    credentialApi.list().then(( res: any) => setCredentials(res?.list || [])).catch(() => {});
+    credentialApi.list().then((res: JsonData) => setCredentials(res?.list || [])).catch(() => {});
   }, [open, hasAuth]);
 
   // 关联凭据
@@ -235,7 +236,7 @@ export function TerminalDialog({
                 className="w-64 px-3 py-2 bg-[var(--dg-bg-tertiary)] border border-[var(--dg-border)] rounded-md text-[var(--dg-text-primary)] text-sm"
               >
                 <option value="">-- 选择凭据 --</option>
-                {credentials.map(( c: any) => (
+                {credentials.map((c: JsonData) => (
                   <option key={c.id} value={String(c.id)}>
                     {c.type === 'ssh_key' ? '🔑' : '🔒'} {c.name}
                   </option>