{"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-g4ldk-wckmh98v","versions":[{"created_at":"2026-06-04T05:53:48Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 94.0→94.0 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.0 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"7d5b33bf0637d389608d25857cce8e1ed311d6c272bf02ef0e33b85804b29eab","version":4},{"created_at":"2026-06-04T04:59:17Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 37.4→94.0 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.0 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"2d621fa5892b408b39ec2d17c9febee03acc0a23ae4d184fe44c7dbc5ec2127d","version":3},{"created_at":"2026-06-04T04:59:17Z","element_count":19,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"205b85be3109b6b11663854c48cc28f651c28c5eb86e890437ddc790af28066d","version":2}]}