{"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-1pb7jbfy","versions":[{"created_at":"2026-06-10T22:55:46Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72816480→quote21237329 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"d28a930065ad872b383b16b75b79570ff353b9f3561a7620299450f80ad78745","version":10},{"created_at":"2026-06-10T18:29:57Z","element_count":84,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"ae757a9bf9ffbd04d7a5ed10ee4a00b4f50a40cfb0de28ee5bceae1ab2bb8e60","version":3}]}