{"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-jynos49t","versions":[{"created_at":"2026-06-11T00:15:08Z","element_count":90,"note":"5軸GA polish 56->98 by M5 (autonomous)","saved_by":"mcp","sha256":"590ccddf281326c035d6ef7b953301932e3ea0cb65a54bda1817d590bedb893e","version":13},{"created_at":"2026-06-10T23:10:04Z","element_count":50,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"efd7944669296b8e7bbd673057c71756ed1b521fc988660faf722fec599647af","version":7}]}