{"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-by736nuq","versions":[{"created_at":"2026-06-13T14:48:41Z","element_count":91,"note":"5軸GA polish 42->94 by M5 (autonomous)","saved_by":"mcp","sha256":"8f4f6cedff8455437f0c51a0578bf22d7be9615ec8f511b1358e0bbb2eff9b3a","version":3},{"created_at":"2026-06-13T14:44:21Z","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":"b0523c33481fca90d541f0a38befdff8375930a5058a78d6d5712302856d4ab9","version":2},{"created_at":"2026-06-13T14:44:21Z","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}]}