{"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-leg6e9n5","versions":[{"created_at":"2026-06-04T05:50:20Z","element_count":98,"note":"GA diverse re-design 2026-06-04: 総合 99.5→99.5 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 99.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"69aea2f7e9a70e171b50a8e58ffcf8a0dffbd8604ec87724e7480e1dbf9dbe0d","version":10},{"created_at":"2026-06-04T04:53:56Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 68.2→99.5 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 99.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"cd2d27f80223d3368320a29eef44b208cf0156cafc0d3a20ec212a849c4285bb","version":9},{"created_at":"2026-06-04T04:53:56Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"0a6d2fd08a050e822c39900bd3a6c8f69fd775dfe2cdf5c44fb391e1ec450528","version":8}]}