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

config.yaml

@@ -0,0 +1,29 @@
+mode: "local"
+port: "8080"
+log_level: "info"
+
+database:
+  driver: "sqlite"
+  host: "localhost"
+  port: 3306
+  user: ""
+  password: ""
+  dbname: "sqlite3.db"
+  charset: "utf8mb4"
+  max_conn: 100
+  max_idle: 10
+
+redis:
+  host: "localhost"
+  port: 6379
+  driver: "redka"
+  password: ""
+  db: 0
+
+jwt:
+  secret: "aiops-local-dev-secret-change-in-production"
+  expire_hour: 24
+
+websocket:
+  read_buffer_size: 1024
+  write_buffer_size: 1024