{"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-vkxh8fzb","versions":[{"created_at":"2026-07-06T03:09:02Z","element_count":142,"note":"言葉から生成: 中庭ロの字 / ガレージハウス・愛車3台・趣味室 / Eccentric courtyard layout for optimal solar gain in winter and cross-ventilation in summer / Raised basement with RC structure for 3-car garage and snow storage/ventilation / High-performance hybrid RC/SOL hybrid structure for seismic resilience and snow load comp","saved_by":"mcp:create","sha256":"","version":1}]}