Reorder Execute() main stage so the background thread waits on dataSem
(sleeping until the RT thread posts) before doing the socket select().
The socket poll is now non-blocking (timeout=0) since command latency
bounded by UDPS_DATA_WAIT_MS is acceptable for CONNECT/DISCONNECT.
Also force-remove old udpstreamer-webui binary in run.sh before rebuild
so stale embedded assets are never served.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Martino Ferrari