{"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-cb0qgq09","versions":[{"created_at":"2026-06-04T05:51:37Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 98.1→98.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.1 (美 100 環 98 楽 100))","saved_by":"editor","sha256":"53618e62f44e765ec39281c83bb8f76445cb03a7e4ee380306272363e57b3917","version":10},{"created_at":"2026-06-04T04:54:45Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 65.5→98.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.1 (美 100 環 98 楽 100))","saved_by":"editor","sha256":"2839e6c2b31b665934e3324d2a0f93a5631988fa7c6a8d3448b6c93f47a8229f","version":9},{"created_at":"2026-06-04T04:54:45Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"4a933c67e2f03a3e947e115fdad0b8e4613b4ed2e92d06c4d3f4bb74784743dc","version":8}]}