- nextcloud/docker-compose.yml: X-Forwarded-Host=onlyoffice.sherlockhomeless.net
(was ${OO_DOMAIN} which Coolify leaves unexpanded → OnlyOffice loads assets
from https://${oo_domain}/ and editor breaks entirely)
- nextcloud/stack.env: update placeholder domains to real ones
- COOLIFY-TEMPLATE.md: add Gotcha 6 about label variable expansion
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>