Phase 9: weapons ride the new-balls rule — kill meter retired

- Deliveries are scheduled by the rules of tennis: game ballChangeFirst (3),
  then every ballChangeEvery (4) games; the tin lands at the NEXT changeover
  (a due tin survives hordes and even-game endings until a changeover comes)
- Fresh tin = bombMax (3) bombs; boy run + 'new balls, please' + NEW BALLS flash
- Shame rule: zombies took a game since the last delivery -> NO NEW BALLS,
  slate wiped either way
- killMeter/bombEvery deleted from state/config/zombies

Verified: delivery at game 3 (bombs 3); due-but-even games hold the tin until
the next changeover; NO NEW BALLS withholds and clears shame; bomb serve still
arms and detonates; killMeter gone; no console errors.

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

gameplay.js

@@ -186,7 +186,11 @@ export function splatPoint(side, quiet = false) {
   const gameOver = advancePoint(side);
   if (gameOver) {
     G.runGames++;
-    if (side === 'O') G.shameGame = true; // they took a game — Oliver pays at the next new-balls delivery
+    if (side === 'O') G.shameGame = true; // they took a game — the next new-balls delivery is withheld
+    // the new-balls rule arms you: deliveries land at the changeover that follows the scheduled game
+    if (G.runGames === TUNE.ballChangeFirst ||
+        (G.runGames > TUNE.ballChangeFirst && (G.runGames - TUNE.ballChangeFirst) % TUNE.ballChangeEvery === 0))
+      G.tinDue = true;
     voice(side === 'P' ? 'game_set_massacre' : 'game_opponent', 0.5); // game-win lines always speak
     cheer(2.2, 0.5);
     const i = side === 'P' ? 0 : 1;
@@ -206,7 +210,12 @@ function startChangeover() {
   G.changeover = true;
   G.phase = 'over'; G.overT = TUNE.changeoverT;
   sendBoy();
-  G.flash = { text: 'CHANGEOVER', t: 1.4 };
+  if (G.tinDue) { // the boys arm you — unless they took a game since the last delivery
+    G.tinDue = false;
+    if (G.shameGame) G.flash = { text: 'NO NEW BALLS', t: 1.6 }; // the umpire withholds
+    else { G.bombs = TUNE.bombMax; voice('new_balls', 0.6); G.flash = { text: 'NEW BALLS', t: 1.6 }; }
+    G.shameGame = false; // the slate is clean either way
+  } else G.flash = { text: 'CHANGEOVER', t: 1.4 };
 }
 
 // retire the splatter ball; a running changeover's long beat must not be clobbered short