Adapt to two contract changes master introduced:
- The generated Remote face now wraps every business result in
RemoteResult, folding carrier failures into an ok:false branch instead
of rejecting. The controller reads that envelope at its three call
sites and maps a carrier failure onto the same settled shape the
controls already render; three specs cover the new branch.
- Client packages split their tsconfig into host and client halves, and
the host aggregate now compiles any test not named *.client.spec.*.
Rename this package's specs to the client convention and drop the
../connection project reference, which pointed at a solution file that
no longer carries the client sources.
Keep master's mount loop with its rollback-on-failure in api-remotes and
add messageFeedbackRemote to it.
