{"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-xduup8dj","versions":[{"created_at":"2026-06-04T05:53:41Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 94.1→94.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.1 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"2a8866247e9cc0e6e0c7483230f97cd80121c31b032d72c0f2047fc160967e69","version":10},{"created_at":"2026-06-04T04:53:57Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 68.1→94.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.1 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"532dadd16fec8fc2aff4b199c08ea1bb138fd74e2d3040d17350e4b3a243c240","version":9},{"created_at":"2026-06-04T04:53:57Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"e555b96861eae9d115f45af1fbdc9d65bed5bb36e19f5b676d1bd171b7b4b3a7","version":8}]}