{"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-kravrkra","versions":[{"created_at":"2026-06-10T23:05:45Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy75041820→quote20693313 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"7ff5234e3f502815a09beb4e426a6a89d1c948e521b335438c144eb7b7c58a11","version":9},{"created_at":"2026-06-10T22:16:52Z","element_count":90,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"562c7d1f2ae1ba3527eca194242c497fa9792dd7856a897fcd3cf22b1995c269","version":4}]}