uv_build packages only src/mcbebop, so arsdk-xml/ at the repo root was
absent from the wheel and every install would have failed to find the
command definitions. Caught during the protocol build.
protocol/types.py and arsdk/types.py are the interfaces the parallel streams
build against: command/arg/enum/expectation specs and the safety tiers on one
side, frame encoding and the buffer conventions on the other.
Logging goes to stderr throughout, since stdout carries JSON-RPC. That is also
why this package will speak ARSDK itself rather than through pyparrot, which
prints from its receive thread.
rsp2k