{"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-2-8d6bd1nu","versions":[{"created_at":"2026-06-04T05:50:00Z","element_count":98,"note":"GA diverse re-design 2026-06-04: 総合 99.5→99.5 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 99.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"532963e88c9daf6161ba57138d4e6ba380647d4ea1d27105ddd2b8ed2e17a73c","version":10},{"created_at":"2026-06-04T04:54:21Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 66.5→99.5 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 99.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"369393a2b7ea1e348fcf8741a6f56684df1d26d59bff04b15eb4ef48f807fd30","version":9},{"created_at":"2026-06-04T04:54:21Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"5ecead6c0f748c1680aa79b2eaa064e6537b9c0d6bca0bfb49b276d7308462cd","version":8}]}