smolnet renders a capsule beside the HTML: plain Markdown plus sidecars, which
itsybitsy converts per request. The plugin lives in the sites repo because it is
not specific to any one site; the relative path is for working locally with the
repos side by side, and the Nix builder copies it in.
era rather than category on the article line. Everything here is Pelican's
default misc, while era is what the site is actually organised around.
