{"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-duoayr0t","versions":[{"created_at":"2026-06-10T22:58:50Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy55439020→quote19805192 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"7225bed61fed377a3651a91211928ef004fef61aa236f93d38e6830ca262b024","version":9},{"created_at":"2026-06-10T20:22:40Z","element_count":89,"note":"5軸GA polish 58->95 by M5 (autonomous)","saved_by":"mcp","sha256":"1f61452db01a0503156d436991bf0a3f68e7f4566e6f4ca641fbb71808799b75","version":2}]}