fix(#28): finalize game creation on first-break selection

- NewGameScreen now calls onCreateGame after BreakOrder step instead of stopping
- Ensures flow creates game and navigates to detail after selecting breaker

Refs #28

src/components/screens/NewGameScreen.tsx

@@ -53,9 +53,9 @@ export default function NewGameScreen({
   };
 
   const handleBreakOrderNext = (first: number, second?: number) => {
+    const finalData = { ...data, breakFirst: first, breakSecond: second ?? '' } as any;
     onDataChange({ breakFirst: first, breakSecond: second ?? '' });
-    // Final step completes via RaceTo already
+    onCreateGame(finalData as any);
-    onStepChange(null);
   };
 
   const handleRaceToNext = (raceTo: string) => {