Big image quality improvement! Kahan summation for Adafactor-optimized Flux FFT#2159

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araleza wants to merge 8 commits intokohya-ss:sd3from

araleza:sd3-kahan

Commits on Jul 29, 2025

Now sending int16s instead of f32s to cpu device; faster and maybe more accurate
araleza
committed
Added log output message to show that Kahan summation is being used
araleza
committed

Commits on Aug 20, 2025