The pooled baseline that scores edge whitening was global across all four
edges, so a card that's normal printed border on three sides and clear
acetate on the fourth had the three normal edges anchor a baseline that made
the clear side read as extreme whitening -- correctly detecting a real pixel
difference, just the wrong one. Now excludes an edge from both the pool and
its own scoring when its median brightness/saturation reads as a
fundamentally different material, and surfaces why in the prompt instead of
silently dropping it.
PWA card-grading app, deployed behind Nginx Proxy Manager on Unraid with
basic auth. Includes CARD_GRADER_BASE_PATH support for running under a
sub-path, and Docker/compose config for the Unraid deployment.
