Caddy config mirrors

File	Role
`Caddyfile`	Multi-vhost config mirror (`/etc/caddy/Caddyfile` on host)
`git.hacktivism.ch.caddy`	Site-block snippet for Forgejo
`Caddyfile.taler-host`	Legacy Taler-only sketch — do not deploy

Also: host/caddy/Caddyfile (same as Caddyfile here).