{"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-q9j8uyy8","versions":[{"created_at":"2026-06-04T05:51:33Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 98.2→98.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.5 (美 99 環 99 楽 100))","saved_by":"editor","sha256":"1091f8f6b4457fb51a1e078a96d648389fc66c164e08f624f2e748fbbafbc21c","version":10},{"created_at":"2026-06-04T04:54:34Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 65.9→98.2 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 98.2 (美 99 環 100 楽 100))","saved_by":"editor","sha256":"0548c28f3077b7438239a4a652b8bc6114ba799a08f7b8b62522c85a9964cc8b","version":9},{"created_at":"2026-06-04T04:54:34Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"6c8ab1e40e67a396636e288aafd774febf2e5400de19ab88ec51587bfef2d3a7","version":8}]}