{"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-175bzgdb","versions":[{"created_at":"2026-06-04T17:01:20Z","element_count":62,"note":"polish: batch-improve-100 2026-06-04 (94.0->100.0)","saved_by":"editor","sha256":"48f151ab57a634f0800df29bd0a133735f29b9a50b231d59ad87623792d5665d","version":11},{"created_at":"2026-06-04T05:55:25Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.2→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":"2f9a320bf2af8b2b2b63f3cc7a65bbb1e90167604647bcf0f263ae12b34f8fa2","version":10},{"created_at":"2026-06-04T04:53:27Z","element_count":72,"note":"GA batch-improve 2026-06-04: 総合 70.1→93.2 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 93.2 (美 93 環 100 楽 100))","saved_by":"editor","sha256":"bdccab3d4b2d7bad5f9dfd67ee542ba2540dbc89aa34d389afe7629857073d1a","version":9},{"created_at":"2026-06-04T04:53:27Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"1aacf9eb4d6b29c8d4bff8b78aa9671de9f01baa84087042ec4d7e8f99172098","version":8}]}