Aim by dragging at them, so the thumb stops walking into the iOS edge

The slingshot pulled back, which meant every shot ended with the thumb lower
than it started — and the next touch begins where the last one ended. Over a
horde it walks itself into the bottom edge strip, where a pull down is
Reachability and iOS takes the gesture. A web page cannot refuse that.

So the drag now points AT the target: the thumb ends high and drifts up-screen,
away from the edge. It also matches the flick-swing, which always aimed this way.

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

zombies.js

@@ -403,7 +403,7 @@ export function spawnRacketZombie() { // one takes up residence on the far court
   if (!G.seen.racket) { // it is not a shambler and it does not behave like one — say so, once
     G.seen.racket = true;
     showModal({ title: 'IT HAS A RACKET', color: UI.hot,
-      body: ['IT RETURNS YOUR WEAK SHOTS', 'ONLY A FULL PULL WOUNDS IT'] });
+      body: ['IT RETURNS YOUR WEAK SHOTS', 'ONLY A FULL-LENGTH DRAG WOUNDS IT'] });
   }
 }
 function endHorde() {