{"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-2-sifljepn","versions":[{"created_at":"2026-06-04T05:52:55Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 94.6→94.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"05a23daa68d335f0be88a820fd6ee950b9fc80fe6da8e43f6e28f0f954737f0c","version":10},{"created_at":"2026-06-04T04:58:44Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 40.9→94.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"5d97dbeaabdf750c7946fc49da9e5a2a351557b60a5f762a921e91d32132ed5f","version":9},{"created_at":"2026-06-04T04:58:44Z","element_count":20,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"41f2e3386f35f51760ad8d219ca7ca78acd883feb4d442ca74f6fd1fe2d216a7","version":8}]}