DNS now exists for the subdomain, so retired the podsteadr.atobitcoin.io/regress/
path-prefix arrangement in favor of a clean root deployment on its own
domain: real Let's Encrypt cert (certbot certonly --webroot, same method
as podsteadr's own cert), independent nginx server blocks, no more
ROUTE_PREFIX/VITE_BASE needed for the live deploy (though still supported
and tested for future use elsewhere). Removed the now-dead /regress/
location from podsteadr's own nginx config.
ssmithx
927997543d