{"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-fvt1nh1k","versions":[{"created_at":"2026-06-04T05:50:51Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 99.4→99.4 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.4 (美 99 環 100 楽 100))","saved_by":"editor","sha256":"855fbaeebf73199e26985162b492f8e066c6d6f93ad690fbe68590537f93e32b","version":10},{"created_at":"2026-06-04T04:54:25Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 66.3→99.4 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.4 (美 99 環 100 楽 100))","saved_by":"editor","sha256":"d50829a73c07a6e5a28aff9bd8714550a48ac46ace7fb58dabc8ca91c3792a04","version":9},{"created_at":"2026-06-04T04:54:25Z","element_count":31,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"caf8b0ed893a8232e7bcab452c5956d4654d68102ece21d9746f5e52c9dc320a","version":8}]}