After the END message the receiver waits for every image buffer the pusher still holds (for
ZeroMQ: zero-copy messages freed once libzmq has transmitted them) before calling Finalize();
on expiry the collection fails with "Send commands not finalized". The limit was a 10 s literal
repeated in the FPGA and Lite receivers; it is now one constant, SendFinalizeTimeout, in the
JFJochReceiver base class.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EizBKhTqrAYago9KJG3dA3