{
  "metadata": {
    "id": "session-alpha",
    "source_id": "fallback-session",
    "title": "Synthetic session transcript"
  },
  "segments": [
    {
      "id": "seg-001",
      "start": 0,
      "end": 4.5,
      "speaker": "Narrator",
      "text": "The stone door opens."
    },
    {
      "id": "seg-002",
      "start": 4.5,
      "end": 8,
      "speaker": "Player",
      "text": "I cast light."
    }
  ]
}