/* Arcade: this file used to carry the demo-only pixel/farm skin. That theme
   now ships in the real app stylesheet (app.css) as Tailwind theme tokens
   plus self-hosted pixel fonts, so this stub is intentionally empty. It is
   kept (and still linked from index.html) because the Pages routing check
   (tools/check_pages_routing.ts) asserts /demo/arcade.css serves with this
   marker. */