*palcus.itp files are Toolset-generated snapshots: category skeleton plus
one descriptor per custom blueprint. Treat them as derived data. Module
source now commits only descriptor-free skeletons; build strips any stale
descriptors and re-inserts descriptors computed from the blueprints in the
source tree (name/STRREF, resref, and CR/faction for creatures), so the
DM Creator lists always match what actually ships in the .mod. Compare
applies the same projection. Extract skips *palcus.itp entirely, so local
Toolset palette churn can no longer leak into module source.
Blueprints with PaletteID 255 (hidden) or no PaletteID are omitted, per
engine convention.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>