{"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-c4vxycyo","versions":[{"created_at":"2026-06-10T22:52:11Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy68009927→quote20631425 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"df8d29bd36a90c5f2b39e24bdfb19ee43c24d968434736bbdd0a3e0eba407762","version":25},{"created_at":"2026-06-10T13:15:35Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積81.7㎡(基礎/屋外/ロフト除外)。設備数量/コスト過大の是正","saved_by":"mcp","sha256":"69c855550dc4f95c45cb4db404c8fc5e9985359113267fd75e07329629c229e4","version":10},{"created_at":"2026-06-10T09:37:57Z","element_count":83,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"7e1dd0530222acc28539966922977c97b484d74776b18ac9e2fa9ed4cd1db81f","version":2}]}