{"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-6gc7qy5i","versions":[{"created_at":"2026-06-17T06:03:12Z","element_count":89,"note":"5軸GA polish 44->98 by M5 (autonomous)","saved_by":"mcp","sha256":"40a9c7fc901797effa742d92973dd7fb1932a4eb5d2d2f027d564aa4b3e28131","version":3},{"created_at":"2026-06-17T05:58:24Z","element_count":87,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"0a7b25534a51957b0b81fbc3695a862f08611ca766161214549d401d15ad1944","version":2},{"created_at":"2026-06-17T05:58:21Z","element_count":87,"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}]}