{"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-19pxigql","versions":[{"created_at":"2026-07-03T06:27:36Z","element_count":70,"note":"5軸GA polish 41->92 by M5 (autonomous)","saved_by":"mcp","sha256":"5332d95958d6e45151881a36bfce8d9e0382ba15093eb85dec5d130c5978f202","version":3},{"created_at":"2026-07-03T06:19:27Z","element_count":101,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"2bb87081d3163133e8991b4fc98fce7b72399bd27b6f2a6eb3d7b46493f1a1af","version":2},{"created_at":"2026-07-03T06:19:27Z","element_count":101,"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}]}