{"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-wucmf5rr","versions":[{"created_at":"2026-06-04T05:51:01Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 99.3→99.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.3 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"acffba258fa672076e2e3019bfc53da8bc32321e336c442e06ddc0766d3fe13c","version":10},{"created_at":"2026-06-04T04:58:02Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 45.5→99.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.3 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"21596ef571ea9464a96e4ddb73d8afd2b893d84ecb89d666b767f310fbc24ec7","version":9},{"created_at":"2026-06-04T04:58:02Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"5e083cd87bae2fe6b05111b42a6ed78ab69ab992032ac10ed84ba48f0b24b9fb","version":8}]}