{"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-a8171cl1","versions":[{"created_at":"2026-06-04T05:50:05Z","element_count":98,"note":"GA diverse re-design 2026-06-04: 総合 99.5→99.5 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 99.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"bb8d85303b3aef584ce7676eaecfa0a28aa45f841981278917096a49f498bb41","version":10},{"created_at":"2026-06-04T04:53:25Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 70.2→99.5 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 99.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"b1603aa01cfefa9b32d622bb41bba5920384db22f679ea4cad24b48772a5a0d7","version":9},{"created_at":"2026-06-04T04:53:25Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"070fe48b5e430735f253ea7c826cb5207f7aaf9a0c4afe154d7fd5c77e141f8a","version":8}]}