Build the frontend and the Go share-service, rsync/scp both to the Caddy
host, and restart share-svc + reload caddy. Triggers on push to master
(and manual dispatch). Requires a DEPLOY_SSH_KEY secret; host/user/paths
default to the Justfile values and are overridable via repo variables.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
