{"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-erazdt9j","versions":[{"created_at":"2026-06-04T17:01:16Z","element_count":63,"note":"polish: batch-improve-100 2026-06-04 (92.4->100.0)","saved_by":"editor","sha256":"6ccde64badd6668e894ef0998bb9feca222bce5e0570bc3539c96a74b8c3c3f8","version":11},{"created_at":"2026-06-04T05:52:44Z","element_count":55,"note":"GA diverse re-design 2026-06-04: 総合 94.6→92.4 (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 92.4 (美 95 環 100 楽 91))","saved_by":"editor","sha256":"a4fc77966983b48359663cf4f227eb051747b9f031195a8695d7680ca6fde891","version":10},{"created_at":"2026-06-04T04:56:02Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 58.0→94.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"c1ebd1c4dd48110c21b790cdf1cb6ce3b5d8370a86a5185bb4fb1897b5fb1366","version":9},{"created_at":"2026-06-04T04:56:02Z","element_count":24,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"32192e1dd4879d332a9e349f2c19a768e3a06992737fd6d59abbbe22baf0d3b1","version":8}]}