cryoval: CPU-only validator for cryo-EM/ET maps

A reconstructor-agnostic linter that checks cryo-EM/ET maps for overfitting, particle-picking bias, and local map-noise hallucination — before you trust a deposited or generated map.

The gap

Reconstruction ecosystems (RELION, Scipion, Topaz, IsoNet) are plentiful; an open-source, reproducible layer that audits a produced map against the data is not. As of the 2026-07-11 batch scan, the GitHub count for a "cryo-EM map validation tool" was 0.

What it does