{"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-n056wmab","versions":[{"created_at":"2026-06-04T05:51:36Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 98.1→98.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.1 (美 100 環 98 楽 100))","saved_by":"editor","sha256":"fb258c6e953c9e6d24032af07dd7eafa84520eae4032a7c176f427e4780bcb24","version":10},{"created_at":"2026-06-04T04:55:28Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 61.3→98.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.1 (美 100 環 98 楽 100))","saved_by":"editor","sha256":"905b5349a919161fd3191e07ae1b5a1ef0f28434b1b1eefda0a4f0909e8f0689","version":9},{"created_at":"2026-06-04T04:55:28Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"cc9d14eb9754f063161813c8b73fd84396f7688f005195798ad62909a9fb4c3a","version":8}]}