{"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-3dq128ve","versions":[{"created_at":"2026-06-04T05:49:50Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 99.8→99.8 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.8 (美 99 環 100 楽 100))","saved_by":"editor","sha256":"d16b402fb86ce56f2919491a9a98a74fdbe7e551af087407c27072ef1901232a","version":10},{"created_at":"2026-06-04T04:53:02Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 72.5→99.8 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.8 (美 99 環 100 楽 100))","saved_by":"editor","sha256":"b6dcee403b32eb6147e88e0e31809e460145ef2fe13b6c3f10e0a69ea28c5cc6","version":9},{"created_at":"2026-06-04T04:53:02Z","element_count":32,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"8463ae713f2ebc7dcae7e177bb79c78a85d9b5a6f79b83b4343d0bd5c8adae49","version":8}]}