Enables \DocumentMetadata (pdfversion=2.0, pdfstandard=ua-2) and
tagpdf with activate-all. Adds an H1 structure tag around every
frame title via \addtobeamertemplate, wraps the overlay-only tikz
helpers (\marktopleft, \markbottomright, \credit) in artifact tags
so they don't pollute the reading order, and adds alt text to each
\includegraphics. Verified compliant with verapdf's PDF/UA-2 profile.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
The bundled example figures referenced base-14 Helvetica without
embedding it, which blocks PDF/UA-2 compliance for any poster that
includes them. Regenerated via ~/bin/embed-fonts (ghostscript with
-dEmbedAllFonts=true).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
\DeclareLanguageMapping and \defbibheading come from biblatex, which the
template does not load. The template has failed to compile without local
edits for some time as a result.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
