{"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-sk6snki1","versions":[{"created_at":"2026-06-10T23:00:36Z","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":"c87b2a2b39f40ed288be2bd7765d94627784887b83496d9a70f5614af41009b4","version":9},{"created_at":"2026-06-10T21:27:52Z","element_count":84,"note":"5軸GA polish 46->97 by M5 (autonomous)","saved_by":"mcp","sha256":"9be7038c47426826eed72b64921e5ed1906a9f1f43b03ec6da81c6255a537f8b","version":3}]}