Completely purge CursorFire component and cursor digit/particle trails from Layout

server/web/src/components/Visual/CursorFire.tsx

@@ -1,7 +1,3 @@
-import { useRef } from 'react';
-import './CursorFire.css';
-
 export default function CursorFire() {
-  const canvasRef = useRef<HTMLCanvasElement>(null);
-  return <canvas ref={canvasRef} className="cursor-hacker-fx" aria-hidden="true" />;
+  return null;
 }