Two promises of sweepStaleTempFiles() were held by no test:
- lstat, not stat: a symlink named like a temp file is neither followed
nor removed. The link is aged too, so the isFile() guard is what keeps it.
- the ^ anchor of TEMP_FILE_RE: a temp name behind a prefix is never touched.
Each new case goes red under its mutation (statSync, anchor removed,
isFile() dropped); index.js itself is unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
