{"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-cyp95c26","versions":[{"created_at":"2026-06-10T13:12:26Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積78.3㎡(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":"847b1331e0453538f253e340c3db057855f5639102cf0e5794bf300206909037","version":11},{"created_at":"2026-06-10T08:33:05Z","element_count":83,"note":"5軸GA polish 58->98 by M5 (autonomous)","saved_by":"mcp","sha256":"197fe72034579a3ea2b2c15afb37888455d79572075e5cd1ef67685f0f4c421a","version":3}]}