{"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-5rzd1jce","versions":[{"created_at":"2026-06-04T05:51:20Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 98.6→98.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"6d3d999fa8cca473ff3bff68223ed3a9d654f7ad47b9f3383f85c5814c094520","version":10},{"created_at":"2026-06-04T04:53:12Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 71.6→98.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"bf43442b4a5e5d78fb3c65b2ce73fddff34670c19007f7aadd70b36f834211ae","version":9},{"created_at":"2026-06-04T04:53:12Z","element_count":32,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"1f1bb7f101fd50ed2fc4eadc28e92eb886e205d0e6fe290c29bf401d5b372ac0","version":8}]}