{"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-xkwn4eff","versions":[{"created_at":"2026-06-04T17:01:27Z","element_count":81,"note":"polish: batch-improve-100 2026-06-04 (93.8->99.0)","saved_by":"editor","sha256":"fa15070a55f22c55aeff863a01512124a987924f6a59242cc1cdc5ea13d17e42","version":11},{"created_at":"2026-06-04T05:53:51Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.8→93.8 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.8 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"f50aa83884549ab69784112a48e59c625356aae30d0f495a31505abee4ad25f5","version":10},{"created_at":"2026-06-04T04:58:34Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 42.9→93.8 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.8 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"8bae95ec24a8d5fcecafedc1255828641b5387192e1b8c293f25d095b61c1a6c","version":9},{"created_at":"2026-06-04T04:58:34Z","element_count":20,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"213b66783199663284751315d7fd92cae70390ce705a081b24e55d0ec1243f63","version":8}]}