Design 3-A4i rung C3 (native tile_processor_gpu HEAD): the cycle-1 resident
prepare result carries the FROZEN conditioning; later cycles of the same
scene run a light prepare (fresh measured offsets + fx/J at the moving pose;
weights/eigen/selection/pull/reg/pure_weight untouched). Rulings (Andrey
07/17): eigen freezes WITH the weights (same trust-in-tile nature); a
frozen-selected tile with no fresh valid peak abstains (y=fx, zero
residual); reg weights + pure_weight freeze from cycle 1. Semantic gain:
every cycle optimizes the SAME objective - conditioning no longer wobbles
with per-cycle measurement noise. Provider/GpuQuad/GpuQuadJna gain a light
flag; the per-scene instance naturally scopes the freeze.
Gates: mvn package+test PASS; Stage0 36/36; native suite incl. new LIGHT
bit-exact test PASS.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>