{"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-newhailescourthouse-v8332rif","versions":[{"created_at":"2026-06-10T22:53:51Z","element_count":77,"note":"legacy fix: jpy64680595→quote20018747 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"1ba43abbd47396cea1bcfd62875f47ffcff7092e4abe6ff7f24cf237c34e1215","version":10},{"created_at":"2026-06-10T17:08:48Z","element_count":91,"note":"5軸GA polish 43->96 by M5 (autonomous)","saved_by":"mcp","sha256":"67d308862f4e48aaa8b0e835cd185a8f20204b8bf5cbd7885435c987b385d1ab","version":2}]}