{"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-sc3sn5yz","versions":[{"created_at":"2026-06-04T05:51:54Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 97.4→97.4 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 97.4 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"22135f7639956af0934a092772ca09849193e44cc1bf2939a443cde588785b25","version":10},{"created_at":"2026-06-04T04:58:19Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 44.7→97.4 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 97.4 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"9b1912e4863239abefa8520df1eeadc6004e793f8e87acf7af614ed49cbbc1fa","version":9},{"created_at":"2026-06-04T04:58:19Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"da362eea42bc19b23f52151c177d7225b5cf077a3836b38dabdebbea16ff4402","version":8}]}