{"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-z7th3pl5","versions":[{"created_at":"2026-06-04T05:51:50Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 97.5→97.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 97.5 (美 100 環 97 楽 100))","saved_by":"editor","sha256":"30d5df32ee65d8221517c23af623a3d864b9e629b9a801e886152ca3294abbaf","version":10},{"created_at":"2026-06-04T04:55:32Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 61.0→97.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 97.5 (美 100 環 97 楽 100))","saved_by":"editor","sha256":"7a07861970e3e27df099e5de33281cb6fde05e5b90b1f3232710e4eda228bf0a","version":9},{"created_at":"2026-06-04T04:55:32Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"9536f4724e315ad2de92a4f39790bd9c1b2add5cfe15976fd8139e99401046e5","version":8}]}