{"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-xqpfooek","versions":[{"created_at":"2026-06-10T22:55:18Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy87379776→quote19954947 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"baba5e721b15cbc996848578a8bfd17ab8329cdf6eda11ccc2e2d6aff08b0d7b","version":10},{"created_at":"2026-06-10T18:13:56Z","element_count":85,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"756657a77832d80d4e70bc3370d43ff373e4813fbdee95af726715490664d33d","version":3}]}