{"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-z21tp3ce","versions":[{"created_at":"2026-06-04T05:51:55Z","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":"ac0d9f8813db9d8ee9a4389b948ef1228bbd4d03912c797394d18606d575e6e4","version":10},{"created_at":"2026-06-04T04:54:51Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 65.0→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":"ca44dfcde627268df363ac7d5ddfcd119b01105af973278f45b16308117a266e","version":9},{"created_at":"2026-06-04T04:54:51Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"5650171bd3afb4a5bf189d62aa2777e61a1a861a3baab7f8fa0bab4af266315c","version":8}]}