CLAUDE: test 7 - windowed-LoG TD product (correlation machinery): broadband exact, crease bands UNCHANGED

Andrey's separate-LoG proposal prototyped on the CPU oracle: LoG as a windowed
16x16 DATA tile (taps pre-divided by the sine window AND cosAtten so the
effective filter is the exact flux-normalized LoG), full 16-mult quad product
per tile (GPU correlateAccumulateTiles table == convolve_tile(conj(data),k) -
verified term-by-term), dttt_iie back (mode-TRANSPOSED = GPU dttii_2d),
corr_unfold_tile, windowed OLA with sum(w^2) normalization.

RESULT: impulse fidelity 2.0e-3 (no aberration-kernel cross-term - a separate
pass), but the ramp crease bands are IDENTICAL to the per-bin fold (+/-0.546):
the DTT symmetric-extension reflection is only attenuated by the window, not
removed - the crease is BASIS-INHERENT to any single-tile TD product. The
per-bin fold is the degenerate (symmetric-kernel) case of this same product.
Band-free LoG requires pixel-domain convolution on the assembled image.

Calibrated conventions along the way (documented in code): correlation product
table, dttii mode transpose, corr_unfold patch mapping (+1 offset, no flip),
global gain 4.000, window and cos tap precompensation.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>