{"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-a4r4mwq6","versions":[{"created_at":"2026-06-16T22:29:03Z","element_count":142,"note":"言葉から生成: 中庭ロの字 / 茶室と縁側のある和の住まい / 中央中庭(採光・通風) / 縁側(全周) / 茶室(床の間・炉) / 豪雨対策(豪雨時増水) / 耐震等級3","saved_by":"mcp:create","sha256":"","version":1}]}