The TUI suite had grown its own copy of the soulfind spawner the protocol
suite already carried, and its own copy of the CLI suite's in-process
client and settle helpers. All four suites now spawn, log in, settle and
skip through `tests/common`: the CLI suite's own server goes too, and
the fixture checks its child is still alive before calling the port
answered, so a lost port cannot pass another server off as ours.
Michel de Graaf
3ef78c6de1