{"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-uiknx6nw","versions":[{"created_at":"2026-06-13T14:35:18Z","element_count":91,"note":"5軸GA polish 44->98 by M5 (autonomous)","saved_by":"mcp","sha256":"111463590c17de57f25e22aaf64ab930917db22b88cae419e0dffcbc9e0403af","version":3},{"created_at":"2026-06-13T14:23:28Z","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":"841c120965375fb765835095a18b167b4de0a71fbfeafa0ae14ea26daf2ed69d","version":2},{"created_at":"2026-06-13T14:23:27Z","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}]}