{"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-oythltd3","versions":[{"created_at":"2026-06-10T22:58:49Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy48570969→quote19293329 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"010a1e9cfe527768eda5e90440b21cfb38d837864bf1b54c54deded98720cc11","version":9},{"created_at":"2026-06-10T20:22:39Z","element_count":83,"note":"5軸GA polish 54->94 by M5 (autonomous)","saved_by":"mcp","sha256":"ce81d1753bbaadffd8736eb03567f5ec18e0d261a50e6bafd639fa3aa3bacd11","version":2}]}