{"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-59x7uyfd","versions":[{"created_at":"2026-06-04T05:51:42Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 97.9→97.9 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 97.9 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"62668bc466022307526113c82be1b989704019e9b17e8904a1d3ff8aa0681262","version":10},{"created_at":"2026-06-04T04:56:53Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 49.6→97.9 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 97.9 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"484be89810db4b3370405decfaa8cb175f7596f7059a5ae926f9be4daf2efa29","version":9},{"created_at":"2026-06-04T04:56:53Z","element_count":32,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"7c3cd9c9f1482d4034e16e42faa1b35b2dc5dcee652285dbbdfb92cfe67941be","version":8}]}