{"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-gihbvulw","versions":[{"created_at":"2026-06-10T22:59:17Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72816480→quote20926514 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"10466534db7093945c3c1032e0fcd9be89428c01ffe81bfba19a16620001ef0d","version":9},{"created_at":"2026-06-10T20:38:23Z","element_count":82,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"574008d9e53df08aaab9dce756a19f9ee5a5d57ee3d9b02b2f6f4cfe0d0a824c","version":2}]}