{"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-squihp5p","versions":[{"created_at":"2026-06-04T05:50:48Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 99.4→99.4 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.4 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"d45db553331472cdb7425e868e3871dbf832c52efd0663a37936a40ff81fab26","version":10},{"created_at":"2026-06-04T04:56:16Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 56.5→99.4 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.4 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"fac991588942cdf6151cc8d8ab477e6f51caa70a90b685c80b282db07339e942","version":9},{"created_at":"2026-06-04T04:56:16Z","element_count":44,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"3b9f3e4f0200ad2068ca77d88dbb99affa914ca4b1a54704ea106add6da7d382","version":8}]}