{"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-pqrevi43","versions":[{"created_at":"2026-06-10T23:00:34Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy70239456→quote22615183 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"311ea5699ffca542b81d8781df98ce1615f80d42b16493982de1f003cb9bb2ba","version":9},{"created_at":"2026-06-10T21:27:43Z","element_count":90,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"510f0e294730f87b92d148564f62d19f6da21b96a8605bbbdffbf0ed0e266db5","version":3}]}