{"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-g2-dgjjmxv7","versions":[{"created_at":"2026-06-04T05:53:44Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 94.1→94.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.1 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"104d6206b5026428e37643ee67316df8ba251958ebf55a457b00edea1a8d9da1","version":4},{"created_at":"2026-06-04T04:55:19Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 62.2→94.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.1 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"d43b64e773a073d97d2d5f08450f648a8b5c9aeb4e2a9a9101ccdccad34f7558","version":3},{"created_at":"2026-06-04T04:55:19Z","element_count":19,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"d509a79fd3c9dc98f8b1129479c3e8f3e127b588a373d3ed0e3715b2de2edfb9","version":2}]}