{"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-hvfg3xid","versions":[{"created_at":"2026-06-10T23:01:22Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy63326340→quote24058999 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"4c10a9860fee2fec78cbd14526ad7336d1ee2c30c8bcefdad9d0ab31af6e3281","version":9},{"created_at":"2026-06-10T22:17:35Z","element_count":90,"note":"5軸GA polish 59->97 by M5 (autonomous)","saved_by":"mcp","sha256":"322f8ca586ff179830557642545ff7b2fbc05dffd33e89f4d3da675acdfb3385","version":4}]}