fix: test push errors, skip heartbeat notify, stale 5h (0.9.2)

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

backend/app/services/notify_dispatch.py

@@ -8,6 +8,7 @@ from app.models import Event, Problem
 from app.services import email_notify, mobile_notify, telegram_notify, webhook_notify
 from app.services.notification_cooldown import should_notify_event, should_notify_problem
 from app.services.notification_policy import get_effective_notification_policy
+from app.services.host_health import HEARTBEAT_TYPE
 from app.services.notification_severity import severity_meets_minimum
 
 logger = logging.getLogger(__name__)
@@ -51,6 +52,9 @@ def _dispatch_problem_channels(problem: Problem, event: Event | None, *, db: Ses
 
 
 def notify_event(event: Event, *, db: Session | None = None) -> None:
+    # Heartbeat — только для UI/статуса хоста, не для Telegram/email/push.
+    if event.type == HEARTBEAT_TYPE:
+        return
     policy = get_effective_notification_policy(db)
     if not severity_meets_minimum(event.severity, policy.min_severity):
         return