fix: defer daily report push и увеличить pool БД (0.4.12)

FCM/каналы для report.daily.* после commit ingest (BackgroundTasks);
SAC_DB_POOL_SIZE=15, SAC_DB_MAX_OVERFLOW=25 для штурма 09:00.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/api/v1/events.py

@@ -2,7 +2,7 @@
 from datetime import datetime, timezone
 from typing import Any
 
-from fastapi import APIRouter, Body, Depends, HTTPException, Query
+from fastapi import APIRouter, BackgroundTasks, Body, Depends, HTTPException, Query
 from fastapi.responses import JSONResponse
 from pydantic import BaseModel
 from sqlalchemy import func, select
@@ -51,6 +51,7 @@ from app.services.notify_dispatch import (
     notify_lifecycle,
     notify_problem,
     notify_rdg_connection,
+    schedule_notify_daily_report,
 )
 
 router = APIRouter(prefix="/events", tags=["events"])
@@ -79,6 +80,7 @@ def _ingest_response(event: Event, *, created: bool) -> IngestResponse:
 
 @router.post("", response_model=IngestResponse)
 def post_event(
+    background_tasks: BackgroundTasks,
     payload: dict[str, Any] = Body(...),
     db: Session = Depends(get_db),
     _api_key: str = Depends(get_api_key_auth),
@@ -96,11 +98,12 @@ def post_event(
     event, created = ingest_event(db, payload)
     problem = None
     problem_created = False
+    deferred_daily_report_id: int | None = None
     if created:
         problem, problem_created = maybe_create_problem(db, event)
         maybe_auto_disconnect_stuck_rdp_session(db, event)
         if event.type in DAILY_REPORT_EVENT_TYPES:
-            notify_daily_report(event, db=db)
+            deferred_daily_report_id = event.id
         elif event.type == LIFECYCLE_EVENT_TYPE:
             notify_lifecycle(event, db=db)
         elif event.type in AUTH_LOGIN_SUCCESS_TYPES:
@@ -116,6 +119,9 @@ def post_event(
         logger.info("ingest duplicate event_id=%s", event.event_id)
     db.commit()
 
+    if deferred_daily_report_id is not None:
+        background_tasks.add_task(schedule_notify_daily_report, deferred_daily_report_id)
+
     body = _ingest_response(event, created=created)
     if problem is not None:
         body.problem_id = problem.id