{"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-75u9xy70","versions":[{"created_at":"2026-07-15T06:00:36Z","element_count":90,"note":"5軸GA polish 46->97 by M5 (autonomous)","saved_by":"mcp","sha256":"a614ab63075a11d7120f3319615026ab081a74cea58fe33fec1650a96dfda8ae","version":3},{"created_at":"2026-07-15T05:49:10Z","element_count":126,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"d2997f768d2a04b181401a6b97ec5e5a1bd6d8e59d4a715a651d62db10e524f6","version":2},{"created_at":"2026-07-15T05:49:10Z","element_count":126,"note":"言葉から生成: LDK+主寝室+子供室2+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}