{"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-qzd2ynv7","versions":[{"created_at":"2026-06-04T05:50:16Z","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":"9949f1b06e85cb4916a4581510a9a7d833bb24c2442af708ed1212239ab031e7","version":10},{"created_at":"2026-06-04T04:52:48Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 74.3→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":"638de48b4487e1b26087564e4627ac6ae779051653a854cfaa6d73310b0ce2f3","version":9},{"created_at":"2026-06-04T04:52:48Z","element_count":31,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"7cff1625bd8c0a2e1eaf2c438f02c6fe90c3a909206af923d8b1045db870a3ff","version":8}]}