{"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-4px6bo71","versions":[{"created_at":"2026-06-04T05:53:32Z","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":"08f29330d158e13dcd220e55c58fbc9d18e1511ad4f64fb229eae96102637050","version":10},{"created_at":"2026-06-04T04:55:00Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 63.9→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":"d3783395d0c2f0129ea78bc208cf8d88f9fdcea764940c7312bb97f1f11b0fed","version":9},{"created_at":"2026-06-04T04:55:00Z","element_count":28,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"fe38158b9a6eafaff34af80f49fd5201e8efc8d7caf7b9c7c5b7394cd5248ba0","version":8}]}