When the device finishes streaming waveform data, it sends a single
partial byte (raw_bytes=1) rather than a complete A5 frame, then goes
silent for the full 120s timeout.
Observed: 35 chunks succeed, chunk 36 times out with raw_bytes=1 —
identical for both events in the test run.
Fix: on TimeoutError, if bytes_fed > 0 and we already have collected
frames, treat it as natural end-of-stream and break to the termination
step rather than propagating the exception. True transport failures
(raw_bytes=0, no prior frames) still raise.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
claude
e3a5c6f07d