feat: publish CodexPi contest snapshot

frontend/public/browser-touchpad-math.js

@@ -0,0 +1,7 @@
+export function relativePointerPosition(pointer,dx,dy,scaleX,scaleY,speed,width,height){
+  const clamp=(value,min,max)=>Math.min(max,Math.max(min,value))
+  return {
+    x:clamp(pointer.x+dx*scaleX*speed,0,Math.max(0,width-1)),
+    y:clamp(pointer.y+dy*scaleY*speed,0,Math.max(0,height-1)),
+  }
+}