{"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-qhfyk1be","versions":[{"created_at":"2026-06-10T22:52:31Z","element_count":65,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote21411198 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"a52ed34bd510f728f4f177f42c09354b123a3e99fd457ed590585ea978a8a590","version":20},{"created_at":"2026-06-10T13:34:58Z","element_count":65,"note":"backfill: 延床=居室床スラブ実面積93.9㎡(基礎/屋外/ロフト除外)。設備数量/コスト過大の是正","saved_by":"mcp","sha256":"290977d833bb17e413d7a2c6fb62aacea149a6a0b3547752da25e6429580d1bf","version":7},{"created_at":"2026-06-10T13:05:54Z","element_count":73,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"ff60a9884dbc9db6bf91dfc6abd42dded61f7d37d4f1b729242d52740c5ab8fc","version":4}]}