{"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-o7tk6n3f","versions":[{"created_at":"2026-06-04T05:55:21Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.3→93.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.3 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"9e5f93c92743a4cf1587b6a5a0fcad1366aa585a7db46b73de4477761a7e4fab","version":4},{"created_at":"2026-06-04T04:53:50Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 68.6→93.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.3 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"c5a151bb7517e5fd7d047a4a1f0d19576811c3752402d0b6f0697f7ef8d8333c","version":3},{"created_at":"2026-06-04T04:53:50Z","element_count":47,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"1cbb4f1fdc7d0cf66fb5c42c80fb183ac6c0013a09a52f81263cd73feb2b270d","version":2}]}