{"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-eds3mbl7","versions":[{"created_at":"2026-06-04T05:52:21Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 95.2→97.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 97.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"444f53e46b2a189c21a37a03e0d606b978da3d013c78f156fb516828a960e3f2","version":10},{"created_at":"2026-06-04T04:56:59Z","element_count":73,"note":"GA batch-improve 2026-06-04: 総合 48.9→95.2 (総2階(箱)・吹抜 縁側 ピアノ室 PV 雨水 南面サンルーム / 適応度 95.2 (美 95 環 100 楽 91))","saved_by":"editor","sha256":"ed05a84c341e49cc2d2d3b7b0edb2a5330dc5b6745cc941a1c7b0ffb1fba371d","version":9},{"created_at":"2026-06-04T04:56:59Z","element_count":51,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"79492a2638c4090e1ef9a92f5a9ae19c3b7f1639e89cb4aa8d3fdbda16fa6f6e","version":8}]}