lib/common.sh: configure_caddy_for_service now pre-fills the domain prompt
with $DEFAULT_SUBDOMAIN.$SITE_DOMAIN when a site domain has been configured
(setup.sh configure / ~/docker/.config). No more typing the full domain for
every service — just press Enter to accept the default.
services/mattermost.sh: remove redundant custom Caddy/domain block added in
the previous commit. MATTERMOST_SITE_URL is already computed from SITE_DOMAIN
before configure_caddy_for_service is called, so the simple call is sufficient.
https://claude.ai/code/session_014CCYqVwW6d6f5dw1qRokYt