{"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-k1edlwm0","versions":[{"created_at":"2026-06-04T05:53:34Z","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":"23a4d230981190ad9d4ec33018ebeb06409fc8f87282f5ef0e9fde10005aa07b","version":10},{"created_at":"2026-06-04T04:57:06Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 48.6→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":"a67f492b7a584d077216cd74ed139daa524d3e365d8aa47cdb78d7c45e6b5ccc","version":9},{"created_at":"2026-06-04T04:57:06Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"518577c9253474d2c0fbdc9e53bdae430970c944cf729063ccfc688776af1c06","version":8}]}