Route *.zea.lt via LAN Traefik, reuse bun cache under /drone-cache,
and skip redundant image pulls on the Pi runner.
Co-authored-by: Cursor <cursoragent@cursor.com>
Serialize esbuild/Angular workers and cap the Node heap under the
2GiB Drone step limit so SSR builds trade time for surviving OOM.
Co-authored-by: Cursor <cursoragent@cursor.com>