{"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-yh3tenjq","versions":[{"created_at":"2026-06-10T23:00:31Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy61441200→quote22379006 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"97f587e084318f704b3c4ca4c6e55293df3aa28707aa28f3bb749e57b2f5d2d2","version":9},{"created_at":"2026-06-10T21:11:22Z","element_count":84,"note":"5軸GA polish 54->97 by M5 (autonomous)","saved_by":"mcp","sha256":"2d3bb6a77417ef81dd8d12ebf48fb9908e9995c0d14cac892e32213c933ec58a","version":3}]}