{"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-jrgzjpyr","versions":[{"created_at":"2026-06-10T22:54:34Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote20904388 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"671f7c6407ec95a5fd2942fe239eee8743f45baf5f9d422be9ae4486b68ccc3d","version":10},{"created_at":"2026-06-10T17:40:08Z","element_count":72,"note":"5軸GA polish 60->96 by M5 (autonomous)","saved_by":"mcp","sha256":"c38a789e8db12f9508f6ddf9c7c7ab4a134937e732ce3794cd824781c2c3eb0b","version":3}]}