sendCommand discarded the reply's sequence number and accepted whatever frame
came back. On a slow remote link a command that timed out left its late reply in
the stream, and the NEXT command read it as its own — crossing STATUS with
READ_BANDS/PROGRESS. That surfaced as phantom frequency jumps (a spurious
follow-loop re-tune), intermittent "reply too short" disconnects, and wrong
element-length readings (READ_BANDS getting the status frame).
Now every reply is matched to its request seq and stale/malformed frames are
drained (bounded), with readPacket resyncing to the next STX. Tested with a
net.Pipe that injects a stale reply ahead of the real one.
rouggy
98f11ee3d0