UI polish: logo start screen, broadcast scoreboard, kill pips, best-run

- start screen: SPLATTER TENNIS logo + slogan, controls kept
- scoreboard redrawn as a real broadcast board (server ball, name, sets,
  games, highlighted points cell); weapon stock moved to a status strip
- kills-to-next-point pips (NEXT ○○○) so the K-kill gate is visible;
  TUNE.killPips toggles it
- miss-debug HUD off by default (TUNE.missHud 0), dev-only now
- eaten screen crows "NEW BEST" when the run beats the stored high score

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

zombies.js

@@ -200,7 +200,8 @@ export function updateZombies(dt) {
       G.horde = null; pellets.length = 0; extras.length = 0; G.mgT = 0; // everything stops; the eaten screen takes over
       try { // the run is over — settle it against the best (games survived, sets as tiebreak)
         const b = JSON.parse(localStorage.splatterBest || 'null') || { games: 0, sets: 0 };
-        if (G.runGames > b.games) { b.games = G.runGames; b.sets = G.sets[0]; localStorage.splatterBest = JSON.stringify(b); }
+        G.newBest = G.runGames > b.games; // beat it → the summary crows about it
+        if (G.newBest) { b.games = G.runGames; b.sets = G.sets[0]; localStorage.splatterBest = JSON.stringify(b); }
         G.best = b;
       } catch (e) { G.best = null; } // private mode etc. — the summary just skips the best line
     }