{"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-1rx22erw","versions":[{"created_at":"2026-06-04T05:51:53Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 97.5→100.0 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 100.0 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"e13fb2f2c9c35840a18fd19c9c8692f266b50eaee04bb520d845f115dad627b2","version":10},{"created_at":"2026-06-04T04:56:53Z","element_count":102,"note":"GA batch-improve 2026-06-04: 総合 49.8→97.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 97.5 (美 92 環 100 楽 100))","saved_by":"editor","sha256":"b70bd94be283e87f2d9cdc21fbc491f700fd0920240ea5e4b6a4007a5a6e1d76","version":9},{"created_at":"2026-06-04T04:56:53Z","element_count":41,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"33ad6742c5fcb8424f0636bcae738769609dd4a0cd2838a8cadb120dbbfc98c7","version":8}]}