{"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-v92s1ric","versions":[{"created_at":"2026-06-10T23:00:08Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy75041820→quote19396944 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"7f02f92bd066c83e5bd8b084afb765a84a4d3775a87de0bf4ef40a3f234504fc","version":9},{"created_at":"2026-06-10T21:11:17Z","element_count":90,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"ef28a10a97bae08c15314a26a0fd073d34656cb64c6e73d91f58ab94ac9a2944","version":3}]}