{"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-u3kw5567","versions":[{"created_at":"2026-06-04T05:53:54Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.7→93.7 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.7 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"eb1764c42d339128430bf955b9c73bdd0de3e8d64ea86d2688da110af2b50bf8","version":10},{"created_at":"2026-06-04T04:58:41Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 41.6→93.7 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.7 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"0b1f12f80c573e3185ef1e8899aa2ceae415d61c1dd230e2e51300c1af013a9d","version":9},{"created_at":"2026-06-04T04:58:41Z","element_count":20,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"b9c28101176b239b825c77befd17a1f3bce20df9dfa653d390f30e2c29cad05c","version":8}]}