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

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

backend/tests/test_notify_dispatch.py

@@ -64,6 +64,38 @@ def test_notify_event_calls_selected_channels():
     mock_em.notify_event.assert_not_called()
 
 
+def test_notify_event_skips_agent_heartbeat():
+    event = Event(
+        event_id="00000000-0000-4000-8000-000000000404",
+        host_id=1,
+        occurred_at=datetime(2026, 5, 29, 15, 0, tzinfo=timezone.utc),
+        category="agent",
+        type="agent.heartbeat",
+        severity="info",
+        title="heartbeat",
+        summary="skip",
+        payload={},
+    )
+    policy = NotificationPolicyConfig(
+        min_severity="info",
+        use_telegram=True,
+        use_webhook=True,
+        use_email=True,
+        use_mobile=True,
+        source="db",
+    )
+    with patch.object(notify_dispatch, "get_effective_notification_policy", return_value=policy):
+        with patch.object(notify_dispatch, "telegram_notify") as mock_tg:
+            with patch.object(notify_dispatch, "webhook_notify") as mock_wh:
+                with patch.object(notify_dispatch, "email_notify") as mock_em:
+                    with patch.object(notify_dispatch, "mobile_notify") as mock_mob:
+                        notify_dispatch.notify_event(event)
+    mock_tg.notify_event.assert_not_called()
+    mock_wh.notify_event.assert_not_called()
+    mock_em.notify_event.assert_not_called()
+    mock_mob.notify_event.assert_not_called()
+
+
 def test_notify_event_skipped_by_cooldown():
     event = Event(
         event_id="00000000-0000-4000-8000-000000000403",