{"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-lnv35p01","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":"1d27939aebf45f2fe78588154d58ef819e6b87fcc01f851594c39c6e36e8dc73","version":4},{"created_at":"2026-06-04T04:56:58Z","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":"edef233e175e4e6a56223ec5a1265b26c6905565e5bf9a4de182f17a98f33831","version":3},{"created_at":"2026-06-04T04:56:58Z","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}]}