{"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-87wt027w","versions":[{"created_at":"2026-06-04T05:53:26Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 94.6→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 97 楽 100))","saved_by":"editor","sha256":"a0c53745b712e343562f5fb8b2980a19b851d653cde5b0ac94b499d45fcfc7e2","version":10},{"created_at":"2026-06-04T04:58:14Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 44.9→94.6 (総2階(箱)・吹抜 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 94.6 (美 95 環 97 楽 91))","saved_by":"editor","sha256":"e8954494fa2f5e768dcf912dd9a04d1122834627aeaad8542fd0762082f17767","version":9},{"created_at":"2026-06-04T04:58:14Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"5e9648c65432d479effed75b969c9f7521440cfb7e08feafdfa792402189c538","version":8}]}