{"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-2-dqcgc629","versions":[{"created_at":"2026-06-04T16:59:28Z","element_count":62,"note":"polish: batch-improve-100 2026-06-04 (90.4->98.3)","saved_by":"editor","sha256":"32f71997f6fb602433638c9cc53677343071ca7a7831d0f1cf3845e902d6f5e5","version":11},{"created_at":"2026-06-04T05:51:49Z","element_count":55,"note":"GA diverse re-design 2026-06-04: 総合 97.5→90.4 (総2階(箱)・吹抜 縁側 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 90.4 (美 95 環 100 楽 91))","saved_by":"editor","sha256":"c14a8aa643077df0b86b09f51053ff73480720d044cff018d58a517cdf090f21","version":10},{"created_at":"2026-06-04T04:57:51Z","element_count":101,"note":"GA batch-improve 2026-06-04: 総合 45.8→97.5 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 97.5 (美 94 環 100 楽 100))","saved_by":"editor","sha256":"df81251c9e4c942d62cc01b17c46bc659d6f58972a4d3b79fe5417edb53a8454","version":9},{"created_at":"2026-06-04T04:57:51Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"fd8182b5ae1501af16316dff68addc910a84f1091137fd3910566063b7d81354","version":8}]}