Post-incident: queue_liveness triggered 2026-09-12T02:15:08.475Z

{
  "invariant": "queue_liveness",
  "severity": "SEV-2",
  "evidence": {
    "planningValidated": 4,
    "inFlight": 2,
    "maxInFlight": 15,
    "recentDispatchCount": 0,
    "windowMinutes": 15,
    "lastSuccessfulDispatchAt": "2026-09-12T01:40:51.042Z",
    "dispatchAttemptsSampled": 30,
    "dispatchSuccessesInSample": 30
  },
  "slack": {
    "channelId": "#dev-alerts-testing",
    "ts": "failed:slack_post_failed:_channel_not_found-1789178408609"
  }
}