The root README keeps what is shared — dependencies, accessibility, the
scripts — and links to a per-template README for how to build and what is
in it. The Posters section moves to poster_template/README.md with a
pointer left behind, since it is that template's caveat.
slides_template/README.md replaces the two READMEs that came with
beamer-mako.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
