feat: ingest burst hardening — defer lifecycle/auth, workers, nginx (v0.5.5)

Defer notify_lifecycle and notify_auth_login after commit; SAC_UVICORN_WORKERS via sac-api-start.sh; nginx /api/v1/events timeout; mass-update confirm in Hosts UI.

backend/app/services/notify_dispatch.py

@@ -216,16 +216,30 @@ def notify_rdg_connection(event: Event, *, db: Session | None = None) -> None:
 
 def schedule_notify_daily_report(event_db_id: int) -> None:
     """Отложенное оповещение по суточному отчёту (после commit ingest, вне горячего POST)."""
+    _schedule_deferred_event_notify(event_db_id, notify_daily_report, label="daily report")
+
+
+def schedule_notify_lifecycle(event_db_id: int) -> None:
+    """Отложенное lifecycle-оповещение (после commit ingest)."""
+    _schedule_deferred_event_notify(event_db_id, notify_lifecycle, label="lifecycle")
+
+
+def schedule_notify_auth_login(event_db_id: int) -> None:
+    """Отложенное оповещение об успешном RDP/SSH входе (после commit ingest)."""
+    _schedule_deferred_event_notify(event_db_id, notify_auth_login, label="auth login")
+
+
+def _schedule_deferred_event_notify(event_db_id: int, handler, *, label: str) -> None:
     from app.database import SessionLocal
 
     db = SessionLocal()
     try:
         event = db.get(Event, event_db_id)
         if event is None:
-            logger.warning("deferred daily report notify: event id=%s not found", event_db_id)
+            logger.warning("deferred %s notify: event id=%s not found", label, event_db_id)
             return
-        notify_daily_report(event, db=db)
+        handler(event, db=db)
     except Exception:
-        logger.exception("deferred daily report notify failed event_db_id=%s", event_db_id)
+        logger.exception("deferred %s notify failed event_db_id=%s", label, event_db_id)
     finally:
         db.close()