```

feat(feishu): 添加飞书入站事件inbox和混合数据库协调功能

- 实现飞书入站事件持久化inbox机制，支持状态管理、租约锁定和重试退避
- 添加混合数据库基线协调工具，确保平台PostgreSQL结构安全对齐
- 增加运行组件心跳检测和readiness就绪检查机制
- 实现app_ticket事件的安全轮换和验证处理
- 添加生产环境运行编排和fail-closed安全机制
- 支持webhook快速确认和长连接独立进程处理
- 完善个人数据擦除时的待处理事件清理功能
```

app/tasks/observability.py

@@ -0,0 +1,25 @@
+from socket import gethostname
+
+from app.core.constants import ActorValue
+from app.core.database import SessionLocal
+from app.modules.observability.constants import HeartbeatComponent
+from app.modules.observability.service import ObservabilityService
+from app.tasks.app import celery_app
+from app.tasks.constants import TASK_RECORD_WORKER_HEARTBEAT
+
+
+@celery_app.task(name=TASK_RECORD_WORKER_HEARTBEAT)
+def record_worker_heartbeat_task(
+    actor: str = ActorValue.WORKER,
+) -> dict:
+    """Record liveness from the Celery process that actually executes the task."""
+
+    db = SessionLocal()
+    try:
+        return ObservabilityService(db).record_heartbeat(
+            component=HeartbeatComponent.WORKER,
+            instance_id=gethostname(),
+            actor=actor,
+        )
+    finally:
+        db.close()