{"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-62hswkhm","versions":[{"created_at":"2026-06-10T22:59:53Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72816480→quote19954947 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"622072e8f1cac5620491fe061f3948d9741fa6c2f126af9346c1bc2f14c170ec","version":9},{"created_at":"2026-06-10T20:54:31Z","element_count":83,"note":"5軸GA polish 53->98 by M5 (autonomous)","saved_by":"mcp","sha256":"b9b97e8934c65119283aecbf5cb658931fbdf855a38965f2acfe653ef5a52118","version":3}]}