Images reach the buffer in order give or take a few, so one still missing when the buffer holds an
image 100 past it is lost, not late: the read returns false instead of waiting for the end of the
collection. The newest image number comes from ImageBuffer::GetStatus, which scans every slot under
the buffer's lock, so it is asked only every 100 polls (~10 Hz).
The test puts CBOR images into an ImageBuffer the way the receiver does and checks read-back of the
pixels, waiting for an image not yet there, the lag limit, the end of the collection and the bounds.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
