The two variable faces under public/fonts are Zen and Zen Mono, but three
places still said Geist. The OG card's source SVG asked for a family the
site does not serve, so rsvg resolved it out of whatever the build host had
installed. The repo notes claimed Geist was served from /fonts/ and pointed
at an OFL.txt that is not there — the notice sits at LICENSE-Zen.txt. The
stylesheet comment narrated a dead CDN path instead of the rule that keeps
the faces on this origin.