sendPacket had its own idea of what a server response means: any leading `#` counted as
harmless chatter. The login parser had just been taught that `# Port full` and `# Login
by user not allowed` are refusals - the server announcing it is about to drop us - so the
two paths reached opposite conclusions about the same line, and the send path was the
optimistic one.
Probed across the responses captured from live servers, they disagreed on four of six.
classifyAck now shares AprsLogin's judgement. A greeting or keepalive still counts as
sent, because APRS-IS does not acknowledge position reports and silence is the normal
outcome; anything the server says that is not harmless fails the report. A late login
verdict arriving here also counts as sent, since it is not about this packet and the
login state already carries it.
Two socket tests cover both directions: a `# Port full` after the write fails the report,
and a real captured keepalive after the write does not.
mckero
e8ad51fd1b