Dead after the 3d3/matched-filter removal (predecessor at tag cuas-layer1):
render3d3Hyperstack, get3d3Radius + the 3d3 kernel state (kernel3d3_rad, indx_*_3d3)
with its constructor param/setup/call-site; TemporalKernelGenerator.generateKernelMatched/Direct;
CuasDetectRT SUFFIX_CONV3D3, CONV3D3_MODES, bilinearFrame. No live callers; build OK.
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>