texlive scheme is the `local.texlive.package` option (default scheme-medium)
so consumers can swap schemes without editing the module; TEXMF* vars keep
its cache/config out of $HOME. pandoc PDF defaults to xelatex — pdflatex
fails on combining Unicode (e.g. U+0308 in decomposed ä).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
