{
  "id": "controlled-queue-cut-20260912",
  "source": "Controlled synthetic boulevard; recorded production event clip",
  "frames": 324,
  "durationSeconds": 10.8,
  "eventId": "7cd4a162-062c-4431-9ddb-61904210cc78",
  "mp4Sha256": "7d2bf886e63d48f010461f3ca5460be6251d5f4861cf8667348373f4fad1f598",
  "result": "One expected queue-cut event in the parent 720-frame controlled run; zero extra events. This clip retains context through confirmation.",
  "scope": "Recorded real detector and tracker on synthetic pixels. No field accuracy claim."
}