{
  "id": "C06-N04",
  "title": "主播放机断线后谁继续发节拍：怎样做主节点失效演练",
  "schema_version": "1.0",
  "evidence_kind": "合成输入与协议；非现场测试结果",
  "tool_versions": {
    "generator": "Python 3.12.4",
    "ffmpeg": "8.0.1（仅实际媒体生成与解码）"
  },
  "required_delivery": "主节点拔网线、进程退出和恢复上线三种故障轨迹",
  "input": {
    "scenarios": {
      "link_loss": [
        "disconnect",
        "local_continue",
        "reconnect"
      ],
      "process_exit": [
        "exit",
        "wait_manual",
        "restart"
      ],
      "leader_return": [
        "old_leader_return",
        "duplicate_role_detected",
        "manual_review"
      ]
    }
  },
  "expected": {
    "scenario_count": 3,
    "automatic_election_assumed": false
  },
  "measurement": null,
  "unmeasured": [
    "实体播放硬件",
    "显示刷新相位",
    "现场拍摄",
    "实际Windows目标机配置"
  ],
  "record_fields": [
    "scenario",
    "event_id",
    "mono_seconds",
    "node",
    "declared_role",
    "beat_source",
    "visible_state",
    "operator_action"
  ]
}