{"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-ockhamriversidebunga-lrqjjoes","versions":[{"created_at":"2026-06-10T13:21:48Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積77.0㎡(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":"34ffa812e40f1c7d47cbb5c8903309668eedd3335efba4488d0bbbd0375ae337","version":10},{"created_at":"2026-06-10T10:23:18Z","element_count":84,"note":"5軸GA polish 43->98 by M5 (autonomous)","saved_by":"mcp","sha256":"d1b51120186c4f1e8128a4c09176844b943df3e903f748e195dcbb5d23241b42","version":2}]}