Proxy processes not being terminated with `thv rm` command

[danbarr]

It appears that ToolHive is not terminating the thv proxy process when you stop & remove a server using thv rm -f <name> like it does when you use the stop command.

To reproduce, run a server and get the PID:

$ thv run fetch

...
5:46PM INF MCP server is running in the background (PID: 72524)
...

$ ps -p 72524
  PID TTY           TIME CMD
72524 ??         0:00.04 /opt/homebrew/bin/thv run --foreground --name fetch --port 21546 --permission-profile /var/folders/qc/rrhc78216yg6x990srv7szfh0000gn/T

Then remove the server using rm -f and note the process is still alive:

$ thv  rm -f fetch

...

$ ps -p 72524
  PID TTY           TIME CMD
72524 ??         0:00.08 /opt/homebrew/bin/thv run --foreground --name fetch --port 21546 --permission-profile /var/folders/qc/rrhc78216yg6x990srv7szfh0000gn/T

When you run thv stop, there is output indicating the proxy process is being terminated. But these don't show up with rm, so it seems that step is skipped.

[danbarr]

It's also leaving behind the toolhive--permissions-*.json file in $TMPDIR