{"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-a73n1n1p","versions":[{"created_at":"2026-06-04T05:53:00Z","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":"b2814a93c5f5e21194a1c708466c916b8ad48293fabc50c8011cb87dbedcede1","version":10},{"created_at":"2026-06-04T04:58:23Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 44.2→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":"352da8ec6b6f66951679436024e65ba967d8f38a0549dca54dd7c0b350e5276c","version":9},{"created_at":"2026-06-04T04:58:23Z","element_count":20,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"142ea35c950d12293d0d9df3820d33740fb361739a32ab7228ce8031684a2156","version":8}]}