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>

state.js

@@ -50,6 +50,7 @@ export const G = {
   changeover: false,  // the odd-game breather: no spawns, no serving, the boys mop
   shameGame: false,   // they took a game — the next new-balls delivery is withheld
   best: null,         // best run {games, sets}, loaded from localStorage when you get eaten
+  newBest: false,     // this run beat the stored best — the eaten summary celebrates it
   lastScoreT: -9,     // idleT of the last score voice — rate-limits umpire during a horde
   eatenT: 0,          // time since you were eaten — gates the restart tap
   missLog: [],        // swing diagnostics ring buffer (tennis mode) — inspect via T.G.missLog