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>

main.js

@@ -89,8 +89,8 @@ const TUT = [
                    "stops being the other fellow.",
                    "Nobody stops the match. Nobody ever does."] },
   { pose: 2, shot: 'tut_aim', say: ["Now you do not rally. You <em>AIM</em>.",
-                   "<em>PULL BACK</em> from your man and let go.",
-                   "The further you pull, the harder it lands.",
+                   "<em>DRAG AT THEM</em> from your man and let go.",
+                   "The further you drag, the harder it lands.",
                    "A soft one only makes them cross."] },
   { pose: 2, shot: 'tut_rack', say: ["I bring tins out to the rack down there.",
                    "<em>BOMBS</em>, <em>TRIPLES</em>, <em>FIRE</em>, and the <em>GUN</em>.",