zifi_input_fifo_check now tracks inactivity in frame-counted quanta
(~5s @ 50Hz, so independent of CPU/turbo clock): after ~10s of total
silence from the server on a request, it's retried automatically (up
to 3 times, resending the already-built request). If retries are also
exhausted: for a music download, skip to the next track in the list
(capped at 8 consecutive dead tracks so an unreachable network doesn't
spin through the whole playlist forever); for anything else, fall back
to the existing manual-cancel path.
Confirmed working on hardware.
alex
54e0031a22