The replay _replay_dc_notch() was treating all 32 Doppler bins as a
single frame, only zeroing bins at the global edges ({0,1,31} for
width=2). The RTL uses dual 16-point sub-frames where each sub-frame
has its own DC, so the notch must use bin_within_sf = dbin & 0xF.
This fixes test_replay_packets_parseable which was seeing 5 detections
instead of the expected 4, due to a spurious hit at (range=2, doppler=15)
surviving CFAR.
Jason
e39141df69
