{"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-rxxku9u5","versions":[{"created_at":"2026-06-04T05:52:49Z","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":"2026-06-04T04:52:39Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 75.1→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":"567f6bf5915d89eb1f36502a7b72f731197efc317920216777d2c0ebbb6a075c","version":9},{"created_at":"2026-06-04T04:52:39Z","element_count":32,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"2f9dc31c790b0e5613dc0e44be19e47fac706a0a82d5d5769a00395f03f4e7e3","version":8}]}