{
  "fixture": "V09-record-safe-csv-split-r1",
  "header": ["record_id", "note"],
  "max_data_rows_per_part": 2,
  "max_bytes_per_part": 48,
  "parts": [
    {"name": "part-001.csv", "record_ids": ["A001", "A002"], "data_rows": 2, "utf8_bytes": 48},
    {"name": "part-002.csv", "record_ids": ["A003", "A004"], "data_rows": 2, "utf8_bytes": 48}
  ],
  "oversized_record": {"name": "oversized-record.csv", "decision": "reject", "truncated": false}
}