{"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-abk4qhf3","versions":[{"created_at":"2026-06-04T05:53:27Z","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":"7c09f869eeb90cb1e288d23fde0d12e5ff375a650f9ca8b4a1822deda542189c","version":10},{"created_at":"2026-06-04T04:53:47Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 68.8→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":"054018fbd2542475de148654ae9d92691d9df404545c1ba57d91d11fb5e56bdd","version":9},{"created_at":"2026-06-04T04:53:47Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"ac097667a1db25ef12303b9bfb7c9e02df8d8a04f2cf83a9f1bee88a9f3a719e","version":8}]}