{"note":"bim_versions 導入後の保存のみ記録 (それ以前は bim_canonical 上書きで履歴なし)","ok":true,"slug":"u-house-5pcavx0z","versions":[{"created_at":"2026-06-10T23:39:45Z","element_count":84,"note":"5軸GA polish 50->98 by M5 (autonomous)","saved_by":"mcp","sha256":"3c362563d3aedc44717df9aadf3ad489044d62759481e8a4ab71ef4e6ecda118","version":11},{"created_at":"2026-06-10T23:08:53Z","element_count":50,"note":"legacy fix: rooms設備語除去 / jpy23520000→quote16878363 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"ea1eba6193aa3477ecf469dbcd7ec1df572c978058d5ab3a8b950e7d7b2a2fc0","version":7}]}