{"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-fgvrj6ei","versions":[{"created_at":"2026-07-07T06:14:39Z","element_count":90,"note":"5軸GA polish 44->98 by M5 (autonomous)","saved_by":"mcp","sha256":"f159a5336f6fffb1a7b59ceaf6ba9d6bd66c46af8d495177181515e79bcf2f9b","version":3},{"created_at":"2026-07-07T06:04:45Z","element_count":105,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"84293eca809892806d733315b5d3e9e0bfe6338b77d136ff3a984dbd3b2b2adf","version":2},{"created_at":"2026-07-07T06:04:45Z","element_count":105,"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}]}