{"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-v15tr4um","versions":[{"created_at":"2026-06-04T05:50:00Z","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":"67615f89c76b98b7b7a03f25e898806073d6d9da8590f3effb3b91e7085b6280","version":10},{"created_at":"2026-06-04T04:57:50Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 45.9→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":"58fd2950334411b54ab193e47e0aaf36c6ffeb5bc560df8d6f58aaa4f01e760c","version":9},{"created_at":"2026-06-04T04:57:50Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"07521c57da0d8a83d12315c247153cb1ba141bc9856c1fbb245bd51b94ac273e","version":8}]}