{"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-275uoc69","versions":[{"created_at":"2026-06-04T05:53:33Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 94.5→94.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"37e4ea2e1126df51019b8273d16a5348220caeae554cbc3d14eab5cfbd17959d","version":10},{"created_at":"2026-06-04T04:52:36Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 75.2→94.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"1cff7b76c22a8f191ea7cb01cebf96e287246cf1fd318b0e89f526226faea769","version":9},{"created_at":"2026-06-04T04:52:36Z","element_count":32,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"b96a4bd49edfa86d9d00ffecae6dcc9da6c653c4621dfdfb9afdb7a8f37ff1ea","version":8}]}