{"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-a2ntrmd9","versions":[{"created_at":"2026-06-04T05:50:47Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 99.4→99.4 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.4 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"cea0eabbfa5226f42ca29cebfef8fe8794e0faec25b6d42b0c43e83a48ade1d7","version":10},{"created_at":"2026-06-04T04:52:56Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 73.4→99.4 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.4 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"074e135259682967018b56c347f87a4be8843c1f023ed7e7a22310630e49e220","version":9},{"created_at":"2026-06-04T04:52:56Z","element_count":66,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"1d28c683589810c1cbe8cd8aa222d3d5c96a572aa61820009c794d5b26ef9b6d","version":8}]}