{"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-5kqf1m2h","versions":[{"created_at":"2026-06-04T07:22:07Z","element_count":99,"note":"GA polish 2026-06-04: 総合 97.3→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":"8a2a0a855d5a1cb813515ee2d3c118b8fc6f44332c67327646217d4d0b854126","version":11},{"created_at":"2026-06-04T05:51:57Z","element_count":102,"note":"GA diverse re-design 2026-06-04: 総合 97.3→97.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 97.3 (美 94 環 100 楽 100))","saved_by":"editor","sha256":"2480cefdc1696163a6bf44dbb32ba7af7677131b681172523e45452aa83e1260","version":10},{"created_at":"2026-06-04T04:53:07Z","element_count":102,"note":"GA batch-improve 2026-06-04: 総合 71.8→97.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 97.3 (美 94 環 100 楽 100))","saved_by":"editor","sha256":"7c972ae9711aa41b691eeeac7a6340cf189da5b54b1ba08d76df304dc07afee1","version":9},{"created_at":"2026-06-04T04:53:06Z","element_count":32,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"7814920174f2589d56219d7ba291df01820eba127c078c43d3e981ed85fb58b5","version":8}]}