- [web]: port and public fqdn for the daemon (Caddy proxies from a
separate jail); port defaults to 8080
- [state]: daemon pidfile and logs directory, default ~/.config/rpn
- [backup]: timestamped dumps for rpnc db backup, default
~/.config/rpn/backups; rpnc db restore looks here by default
- cli.md: document the optional positional path and the directory
defaults for db backup/restore