start
Compatibility overload for callers that publish one fixed file.
Bind and start. Pass port=0 to let the OS pick a free port (useful in tests).
Parameters
packFileSupplier
supplies the file to serve at pathPrefix. The route reads the file fresh on each request, so the URL stays stable across re-mixes. May be null/absent at start time — the route 404s until the file appears.
port
bind port; 0 = OS-picked.
pathPrefix
request path for the pack zip (e.g. /rspm.zip).