{"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-qmfch2td","versions":[{"created_at":"2026-06-10T22:57:34Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy75041820→quote20833288 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"b2c8766049415070c9a39cc73de51f7feaa77b53cbfe6deb0315e625602ea554","version":9},{"created_at":"2026-06-10T19:34:24Z","element_count":90,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"968949364226d081c054ab14dfdb9f8c171c355f476b3e38bdeb84f20cac6764","version":2}]}