zone binary smoke run (task log M1-03C-05)
$ cargo run -q --release -p zoen-zone --bin zone -- --port 0 --seconds 2
[zone] listening on ws://127.0.0.1:55172 (zoen-protocol/1, 20 Hz)
[zone] stopped after 2.0s: ticks=41 p50=0.02 ms p99=0.15 ms max=0.14 ms joins=0 leaves=0 frames=0 skipped=0 threads_left=0