{"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-m6lbpzjt","versions":[{"created_at":"2026-06-04T05:50:04Z","element_count":98,"note":"GA diverse re-design 2026-06-04: 総合 99.5→99.5 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 99.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"9bdc28f6a9e75f2f34749da7597b58b5ca3f3d3bef396dc6537d7680beda5501","version":10},{"created_at":"2026-06-04T04:52:44Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 74.8→99.5 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 99.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"fbe548f5a2eb5f16852591fb359fcecff49994b0e1c73af4911238fa57a4f979","version":9},{"created_at":"2026-06-04T04:52:44Z","element_count":31,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"6f1ee1138140ee6cf6cfd50c76cd728308611d00d3028b6e8fd2b5bd94cac76a","version":8}]}