Every 0x02/0x03/0x07 ack produced an INFO line that, at one report per
vehicle every few seconds across many vehicles, drowns out meaningful
events in the log stream.
writeAck now checks the tag string: tags starting with "report-ack-" or
"heartbeat-ack" log their success at DEBUG (guarded by isDebugEnabled to
avoid building the hex dump string when DEBUG is off). Sparse ack tags
-- vehicle-login-ack / vehicle-logout-ack / platform-login-ack /
platform-logout-ack / time-calibration-ack -- keep INFO for audit.
Flush *failure* is still WARN for every tag so problems are never
silenced.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
d8279ac3b7