{"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-xirrqrs8","versions":[{"created_at":"2026-06-10T23:58:02Z","element_count":83,"note":"5軸GA polish 50->98 by M5 (autonomous)","saved_by":"mcp","sha256":"a32315a6074d7d578f7cb8225cb238aca57cd8bbfc4ee8d3fecd8f12ca5dd727","version":13},{"created_at":"2026-06-10T23:09:41Z","element_count":50,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"1d93f1d90803510240390637af6d19e5a5405068e8c3df929a5518170f990bc2","version":7}]}