{"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-dsdc8fh0","versions":[{"created_at":"2026-07-30T08:09:28Z","element_count":167,"note":"言葉から生成: 総2階(箱) / 越屋根のある自然素材の家・通風重視 / 越屋根(通風口) / 吹抜(風道) / 竹まがま(風除け) / 高窓(採光)","saved_by":"mcp:create","sha256":"","version":1}]}