{"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-rf2dex00","versions":[{"created_at":"2026-06-10T22:52:38Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy80278800→quote22600161 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"3ad6dd323667210f054842437e4dc13f742aaa627f680d68773a9c8a1848e7b0","version":17},{"created_at":"2026-06-10T14:29:51Z","element_count":72,"note":"5軸GA polish 44->96 by M5 (autonomous)","saved_by":"mcp","sha256":"ea128f582d09eedaf24cd31c7f8ec5458270f11549f6176f9ed96d2752aad9d3","version":7}]}