{"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-wcyr44gq","versions":[{"created_at":"2026-06-10T22:52:30Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy85444799→quote20649364 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"12724a1bd794d68e6f12ac4aedd8ebd748a05fadc23fed8ba3941e7945940296","version":20},{"created_at":"2026-06-10T13:34:23Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積81.4㎡(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":"824d7985f1bdd0d20074f7a4c9ddc42144d58b4769be5dfb3559d329b8ba00a8","version":7},{"created_at":"2026-06-10T12:48:53Z","element_count":73,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"a066f6cc8279217a94d45630cf3299fb72706c1ab6562440aa1f31ecbe8ea7ac","version":4}]}