Autotiles are a new asset type with a tab that shows every tile of the floor (2x3) or wall (2x2) block and an animated sample pattern (#118)

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

tools/e2e/lib/scaffold.mjs

@@ -109,6 +109,7 @@ export const TAB_LABELS = {
   shader: 'Shader',
   texture: 'Texture',
   animation: 'Animation',
+  autotile: 'Autotile',
   container: 'Container',
   list: 'List',
   particles: 'Particles',