{"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-k3hajmob","versions":[{"created_at":"2026-07-18T19:38:31Z","element_count":73,"note":"5軸GA polish 46->97 by M5 (autonomous)","saved_by":"mcp","sha256":"8d847e45006ba1f0599f6d0ee5633f6e94a9b653eec6b693280283984cca59a3","version":3},{"created_at":"2026-07-18T19:27:01Z","element_count":130,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"06fcadd62c8f6b4382467f479b4f850cb5d0a9a87faacae09f1a521add3e64a1","version":2},{"created_at":"2026-07-18T19:27:01Z","element_count":130,"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}]}