{"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-li4e85rl","versions":[{"created_at":"2026-06-04T05:51:39Z","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":"896dfa2bb8e6d15626da9c5539f606a372ce3ef8eeafc22c4aef41de2396b98a","version":4},{"created_at":"2026-06-04T04:56:59Z","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":"6b90b10a8a7c54e213167061e4e92d4b743cb4ea7aa7a0258c172c9a5b0fabf1","version":3},{"created_at":"2026-06-04T04:56:59Z","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}]}