fix(jobs): watchdog checks every six hours, the beat stays daily

tests/test_heartbeat.py

@@ -253,7 +253,7 @@ class FakeRoom:
 
 
 class FakeRun:
-    def __init__(self, cron="42 17 * * *"):
+    def __init__(self, cron="42 */6 * * *"):
         self.job = SimpleNamespace(cron=cron, name="сторож")
         self.scheduler = SimpleNamespace(tz=WARSAW)
         self.spawned = []
@@ -280,7 +280,7 @@ async def test_watch_job_prints_ack_and_spawns_alarm(tmp_path, monkeypatch):
 
     assert room.limit == 25  # окно запрошено явным размером
     assert room.said and room.said[0].startswith(f"ack {PEER} ")
-    assert "res=24h" in room.said[0]
+    assert "res=6h" in room.said[0]
     assert len(run.spawned) == 1
     agent, title, text = run.spawned[0]
     assert agent == "beaver-triage" and title == "сторож"