{"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-79bhjytb","versions":[{"created_at":"2026-06-04T05:49:49Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 99.8→99.8 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.8 (美 99 環 100 楽 100))","saved_by":"editor","sha256":"f1195723c51e5f4e601857c0a3495c89546f67e25b787728d3a1916b47be2291","version":10},{"created_at":"2026-06-04T04:53:08Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 71.8→99.8 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.8 (美 99 環 100 楽 100))","saved_by":"editor","sha256":"00adcd973c993ee84c1a28d18040087fa9d3274b7b26cc98ad0215771dd38227","version":9},{"created_at":"2026-06-04T04:53:08Z","element_count":31,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"893b99ef3a1247953500ba42c6cbe852429405c259444128425afaf826bca788","version":8}]}