{"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-ci1ljd1e","versions":[{"created_at":"2026-07-08T19:41:17Z","element_count":91,"note":"5軸GA polish 42->94 by M5 (autonomous)","saved_by":"mcp","sha256":"83c830d5641c700a1f27f59bf5e6e64a4c68bcc0242b308dbfabdbd5040f3ae5","version":3},{"created_at":"2026-07-08T19:28:34Z","element_count":83,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"8b75f9e3a6065e6fa2e6f3feca4d28f9e5d87836d2dfb82dca342c536eb4cb4e","version":2},{"created_at":"2026-07-08T19:28:34Z","element_count":83,"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}]}