{"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-e82dj7sg","versions":[{"created_at":"2026-06-10T22:52:48Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy54927201→quote20835511 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"daac446b8fce5951445df83ceb35cd7093cf76c2f707d412231dd32040120123","version":10},{"created_at":"2026-06-10T16:23:38Z","element_count":91,"note":"5軸GA polish 56->94 by M5 (autonomous)","saved_by":"mcp","sha256":"c99fc105ca0d201807f108104ebd5435b29c2a135ac99451ed095aaef3e56e36","version":2}]}