{"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-3pfrwesg","versions":[{"created_at":"2026-07-03T06:03:14Z","element_count":67,"note":"5軸GA polish 44->96 by M5 (autonomous)","saved_by":"mcp","sha256":"6c582bfbd606ffaf369a6cbf2545d8d0a7f3a9d0908d1f102bae7ee10109c2c7","version":3},{"created_at":"2026-07-03T05:55:18Z","element_count":130,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"668de6d0cc928cb2185b755bf81355b174eafcdc5a6b34b74901bd02c67727f3","version":2},{"created_at":"2026-07-03T05:55:18Z","element_count":130,"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}]}