{"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-8tmi84ae","versions":[{"created_at":"2026-06-04T05:49:55Z","element_count":98,"note":"GA diverse re-design 2026-06-04: 総合 99.6→99.6 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 99.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"d3dc3df5ccc4f99c7327e53078bd1a33a583953372edcd05819cb3015e63aa8f","version":4},{"created_at":"2026-06-04T04:56:49Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 50.1→99.6 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 99.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"d54a598a0526a38eacccdd5b3dfebca41525fb1f4172e0f545e69106eb24fff0","version":3},{"created_at":"2026-06-04T04:56:49Z","element_count":75,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"0e015fbd536802f8a1c500b0f21f48a0ef96c00df433f7855084becbcd35f411","version":2}]}