{"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-3aequ0nj","versions":[{"created_at":"2026-06-10T22:52:41Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy80278800→quote21192161 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"abeb64394ad0386fda67de688e3ca5ee8e9cfa4ea53815f54c42604d20c18e70","version":14},{"created_at":"2026-06-10T15:19:41Z","element_count":72,"note":"5軸GA polish 61->96 by M5 (autonomous)","saved_by":"mcp","sha256":"4cbc96672d2ca2296de08ea8f07bf8ca7dd689f21992288c6ce19b11a2bf2d81","version":6}]}