Bestiary portraits in the high-res style: a painted pixel-art bust for every creature

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.gitignore

@@ -9,3 +9,5 @@ art/generated/creature-previews/
 art/generated/sprites/*-raw*.png
 art/generated/sprites/anim/*-raw*.png
 art/generated/sprites/scripts/__pycache__/
+art/generated/portraits/*-raw*.png
+art/generated/portraits/scripts/__pycache__/