80c57ec126
`util.URLJoin` was deprecated with unclear semantics (path normalization via `url.Parse`/`ResolveReference` that surprised callers). This removes it entirely and replaces all usages with straightforward `"/"` string concatenation. --------- Co-authored-by: copilot-swe-agent[bot] <[email protected]> Co-authored-by: wxiaoguang <[email protected]>