{"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-six18l6k","versions":[{"created_at":"2026-06-04T05:49:32Z","element_count":98,"note":"GA diverse re-design 2026-06-04: 総合 100.0→100.0 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 100.0 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"8a1b7b9ee0541b1dee62ef4f97a3560667529bf7c45a561b4570f7ceffb3ddea","version":10},{"created_at":"2026-06-04T04:53:39Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 69.6→100.0 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 100.0 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"839781fe969d98b69ee827435bf5671b1a085b8a58479a24ff2850034b8cd23f","version":9},{"created_at":"2026-06-04T04:53:39Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"6f187033f1d806d057b87c4e1a6eb1812538d3024b503219d885013183aa87d2","version":8}]}