{"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-avsm7hsv","versions":[{"created_at":"2026-06-10T23:07:18Z","element_count":72,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote26599510 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"d223d98383ad779996b14167af2006e476fe1837ea08508cb5c14a8e67a26813","version":9},{"created_at":"2026-06-10T22:52:05Z","element_count":72,"note":"5軸GA polish 51->97 by M5 (autonomous)","saved_by":"mcp","sha256":"0fdbba599d4129bd5e1109e324dd8849e433d6f526ef43cad3a1bcb04a2225b2","version":8}]}