{"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-9rhpbw32","versions":[{"created_at":"2026-08-03T15:51:24Z","element_count":187,"note":"言葉から生成: 中庭ロの字 / 中庭のある回遊動線・ロの字 / 吹抜け中庭 / 縁側回遊 / 高断熱高気密 / 太陽熱利用","saved_by":"mcp:create","sha256":"","version":1}]}