fix: prevent endlos games from ending immediately on first score

- Change endlos raceTo from 0 to Infinity to prevent automatic completion
- Update NewGame component to handle Infinity values properly
- Add Infinity checks in game completion and winner logic
- Fix game progress calculation for endless games

Fixes issue where selecting 'endlos' mode would end the match
immediately when any player scored their first point.

src/utils/gameUtils.ts

@@ -44,6 +44,9 @@ export function getGameDuration(game: Game): string {
 }
 
 export function calculateGameProgress(game: Game): number {
+  // If raceTo is Infinity, progress is always 0 (endless game)
+  if (game.raceTo === Infinity) return 0;
+  
   if (isEndlosGame(game)) {
     const maxScore = Math.max(...game.players.map(p => p.score));
     return Math.min((maxScore / game.raceTo) * 100, 100);
@@ -61,6 +64,9 @@ export function getGameWinner(game: Game): string | null {
     return game.winner;
   }
 
+  // If raceTo is Infinity, there's no automatic winner
+  if (game.raceTo === Infinity) return null;
+
   if (isEndlosGame(game)) {
     const winner = game.players.find(player => player.score >= game.raceTo);
     return winner?.name || null;