{"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-tyu4ctdw","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":"e25939d4b57a30df3d81b30cfee62fcf0c49f5ad45b8df810221279165d11aa5","version":10},{"created_at":"2026-06-04T04:58:17Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 44.9→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":"eac853e48bf767ef3b145884fe634557c587990f203efe10b4206d358e7c74c6","version":9},{"created_at":"2026-06-04T04:58:17Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"e8baf71901cf9f9a629a4bcc324c4a639c9a54f5eac0c81c24fcade0d6cc4f44","version":8}]}