{"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-fxvevskc","versions":[{"created_at":"2026-06-10T23:06:25Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy84287347→quote23104426 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"813ff0e73cac1d2e4681250f221643d317b4d3b3b3bab41084cec77ebd1a70d6","version":9},{"created_at":"2026-06-10T22:34:47Z","element_count":90,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"fc0c978bdad11d60163fbf64ce34cb29645018d5d86aa0282729ae77c3fc23c4","version":6}]}