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>

config.js

@@ -50,7 +50,8 @@ export const TUNE = {
   racketSpeed: 2.8, // m/s the racket zombie shambles to chase a ball
   racketQMax: 0.55, // its return quality is capped here (slower, sloppier than the tennis CPU)
   racketFlub: 0.2,  // chance the racket zombie whiffs a return
-  missHud: 1,       // show the last miss reason on screen (full log: T.G.missLog)
+  missHud: 0,       // show the last miss reason on screen (full log: T.G.missLog) — off; dev-only
+  killPips: 1,      // splatter: show the kills-to-next-point pips on the scoreboard
 };
 
 export const COURT = { L: 23.77, W: 8.23, dblW: 10.97, netZ: 11.885, netH: 0.914, netW: 10.06 };