{"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-prj2krkp","versions":[{"created_at":"2026-07-13T22:43:09Z","element_count":140,"note":"言葉から生成: 平屋(矩形) / 平屋の別荘・大きな軒・土間 / 軒出し1.5m / 全面土間 / 耐風力強化 / 高窓採光","saved_by":"mcp:create","sha256":"","version":1}]}