{"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-h0cyybwb","versions":[{"created_at":"2026-06-04T05:55:12Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.5→93.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"dba23ce8b7c361a6a7e14ec2dcb2f476916dc1020e13a00b7252824d7d21ca93","version":10},{"created_at":"2026-06-04T04:53:36Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 69.8→93.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"06c18007fa78c85ca747430943bf24b4bb39546ce864b221f28f12ce2d90b058","version":9},{"created_at":"2026-06-04T04:53:36Z","element_count":32,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"b543c94a388e9bf1ec0ab95fcd31c4cf828aad84e5d34326f0b8a5c07e4d0d1f","version":8}]}