{"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-rc3-t24efzzd","versions":[{"created_at":"2026-06-04T05:51:38Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 98.0→98.0 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.0 (美 100 環 94 楽 100))","saved_by":"editor","sha256":"be06baf4f10c24250aeca11784f9c0ab0286e921329e594afae96232fc8d2db7","version":4},{"created_at":"2026-06-04T04:56:57Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 49.0→98.0 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.0 (美 100 環 94 楽 100))","saved_by":"editor","sha256":"0d1c98636709a8fa92d9752f055bc4937a90a31f79bc5b9ddae5ca056440574e","version":3},{"created_at":"2026-06-04T04:56:57Z","element_count":75,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"6038851c30f616c453c2272ef19a99fbcbf2dfc3472f7a5ad7a9c7987d6efd4a","version":2}]}