{"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-mh4xrff4","versions":[{"created_at":"2026-06-10T22:53:06Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72816480→quote21571339 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"c61919a640a0879ccc8180d05c30364eb26b65328ba2822d364b3f62c275d6d0","version":10},{"created_at":"2026-06-10T16:39:19Z","element_count":84,"note":"5軸GA polish 58->98 by M5 (autonomous)","saved_by":"mcp","sha256":"787abfd32997266ea7e5533c93cccaaf622c26299a18ac8855b61578c11dd8a6","version":2}]}