{"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-lerbjpdj","versions":[{"created_at":"2026-06-20T19:29:25Z","element_count":88,"note":"5軸GA polish 41->94 by M5 (autonomous)","saved_by":"mcp","sha256":"56be26a5349db198620bd829ed9f7d7bb6bcb11df642035523ce486e76b6e20d","version":3},{"created_at":"2026-06-20T19:27:27Z","element_count":85,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"0a47516e36c18192eb0f68bd15a959b8cb0c4259531734610e8d122d4c2c1ea0","version":2},{"created_at":"2026-06-20T19:27:24Z","element_count":85,"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}]}