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>

state.js

@@ -33,7 +33,7 @@ export const G = {
   wasServe: false,    // the ball in flight is a serve (first bounce must hit the box)
   splatT: 0,          // time survived in splatter mode — drives the difficulty ramp
   bombs: 0,           // bomb-ball stock (max TUNE.bombMax); the next serve auto-consumes one
-  killMeter: 0,       // splatter kills toward the next bomb reward (every TUNE.bombEvery)
+  tinDue: false,      // the rules called for new balls — deliver at the next changeover
   horde: null,        // active horde wave {t, spawnT, mgT} — machine-gun racket, no serving
   runGames: 0,        // games finished this run (either side) — the difficulty director
   sets: [0, 0],       // splatter sets won [you, them]; 6 games = a set = a horde