{"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-z206q925","versions":[{"created_at":"2026-06-04T05:50:58Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 99.3→99.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.3 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"da04cbfba2c1a33544392cd1920656d21af6ca4e457ae96cfe497b2123ab478f","version":10},{"created_at":"2026-06-04T04:58:01Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 45.5→99.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.3 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"4373316775329a42395f9bdaddfd88c95b4bbc69c631036494e909befa30846d","version":9},{"created_at":"2026-06-04T04:58:01Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"c9126b2b7d8006127fbe371646a955a5e8e49e3ea7144223419151686b9f518c","version":8}]}