{"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-qe921qcj","versions":[{"created_at":"2026-06-04T05:51:01Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 99.3→99.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.3 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"2ced88f19f78292585010a363d8848c3fde51aff6221b401ef05b3650612424b","version":10},{"created_at":"2026-06-04T04:54:30Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 66.1→99.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.3 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"25a004e7384bff0523f13f584762a6c88b7303dc82a2a7d8881e127da515e16f","version":9},{"created_at":"2026-06-04T04:54:30Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"fec9727de960568792918161defc5ca4e3b668c779779b54c2ca63f132a4d0c6","version":8}]}