{"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-24uu543f","versions":[{"created_at":"2026-06-10T23:07:07Z","element_count":70,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote26515125 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"60e80d3a035fdbb86f737a183280723508c257e8f0e2a7cc18559157fce5d0f0","version":9},{"created_at":"2026-06-10T22:52:04Z","element_count":70,"note":"5軸GA polish 60->96 by M5 (autonomous)","saved_by":"mcp","sha256":"a6344d8ad59e988f45cef19029ecf949d3202f240da7d0593b14d80cccfec910","version":8}]}