Per Andrey's input-verification methodology: the -POSE-RT-COMPOSITE "real"
component must be the weighted 16-sensor average (comparable to the virtual
render), while the correlator receives the per-tile SUM (379b3cf6 fix).
Render moved BEFORE the sum scaling (extra H2D + imclt in debug mode only);
the post-correlation render (which would now show the count-stepped sum)
removed.

Verified: mvn -DskipTests clean package OK.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>