{"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-tsifznwm","versions":[{"created_at":"2026-07-13T10:37:34Z","element_count":88,"note":"5軸GA polish 40->94 by M5 (autonomous)","saved_by":"mcp","sha256":"5737d1ae60fde787ffd3d0fffaef2d07fa22d586bb9e7cc12f2b85d688010cc3","version":3},{"created_at":"2026-07-13T10:30:43Z","element_count":101,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"22a21f99d91c107e91b50f47e861ec01dd97d629cadb4fd8ec4067c62189c7ba","version":2},{"created_at":"2026-07-13T10:30:43Z","element_count":101,"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}]}