{
  "id": "C015",
  "synthetic": true,
  "checked_at": "2026-10-24",
  "input": {
    "complete_record": {
      "id": "e1",
      "text": "合成"
    },
    "pending_text": "{\"id\":\"e2\",\"text\":\"尾",
    "append_text": "部\"}\n",
    "expected": {
      "committed_before": 1,
      "committed_after": 2,
      "ids": [
        "e1",
        "e2"
      ],
      "complete_without_lf_waits": true
    }
  }
}