{"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-4889s9wv","versions":[{"created_at":"2026-06-11T00:14:39Z","element_count":83,"note":"5軸GA polish 62->98 by M5 (autonomous)","saved_by":"mcp","sha256":"bcf234f03bd77ad71126f94569beca53abe5c43821f2cf3c29cd69d8a08e62a5","version":13},{"created_at":"2026-06-10T23:09:56Z","element_count":47,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"6c5f8e49e9f6ebe65ae9e28f612b952118e12ff0db4da7a79247f680ef5affb3","version":7}]}