Volleys get wider reach and swing window; serve volleys no longer fault

A ball passing pre-bounce moves at full pace with no bounce cue to time
against, so marker-behind volleys needed frame-tight taps. Pre-bounce
player contact now widens reach x1.4 and the swing window x1.8 (VOLLEY
in config.js). Also clear G.wasServe in doHit so a serve returned out
of the air doesn't fault-check the return, and launch.json uses
autoPort.

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

.claude/launch.json

@@ -3,9 +3,10 @@
   "configurations": [
     {
       "name": "splatter-tennis",
-      "runtimeExecutable": "python3",
-      "runtimeArgs": ["-m", "http.server", "8641"],
-      "port": 8641
+      "runtimeExecutable": "sh",
+      "runtimeArgs": ["-c", "python3 -m http.server ${PORT:-8641}"],
+      "port": 8641,
+      "autoPort": true
     }
   ]
 }