Clean up how commands are sent over the wire

[seanshahkarami]

We’re still using this thing that I quickly hacked together when WG and I were getting something ready for a testing process at PDT a long time ago. If you ever look at what gets transferred over the wire, it’s ugly as hell. (Don't ask why...there were hypothetical features that were requested. :-))

Ideally, that should get cleaned up and be usable without much more than a tool like screen. It probably shouldn't be so different than how we use the console?

It would simplify things a lot to stop multiplexing the output to include command results and logging...but needs more thought. (Probably the system can just have a "logs" command which prints logs until it's "killed".)