ift3-24000.ckpt: ufsm 3D ink network ("ift3"), ink96-wk1 fine-tuned 24000 steps on tight (+-14 um) human ink labels from all scrolls
(scrollprize first-letters / segment labels, ufsm ink-splat into 3D) + PHerc0841. 9.6 um input. Holdout F1 mean 0.531 (ink96-wk1: 0.273).
Inference used in the corpus: window 640, halo 64, frozen GroupNorm calibrated per scroll, two passes offset by 256 voxels blended
with ufsm ink-blend (sin^2) to remove window seams.
Code: https://github.com/SuperOptimizer/ufsm (ufsm predict / ink-blend).