Facegen Diagnostics

Overview

This is an investigation flow for the dark/grey/black-face family of NPC bugs in Skyrim SE. A baked NPC face is two preprocessed per-NPC files (a head .nif and a face tint .dds); "dark face" is a desync between the plugin that wins the NPC record and the mod/BSA that wins the facegen file for that same NPC. This skill resolves the NPC, computes its facegen path, compares the two winners, and decides whether to make the right file win or forward the right appearance into a record — then verifies.