feat: implement game control callbacks in MemoryPairsGame

Connect game control buttons to actual game actions using context
functions for Setup, New Game, and Quit functionality.

- Setup: exit session and navigate to /arcade/matching (returns to setup)
- New Game: call resetGame() from context
- Quit: exit session and navigate to /arcade

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

apps/web/src/app/arcade/matching/components/MemoryPairsGame.tsx

@@ -14,7 +14,7 @@ import { css } from '../../../../../styled-system/css'
 
 export function MemoryPairsGame() {
   const router = useRouter()
-  const { state, exitSession } = useArcadeMemoryPairs()
+  const { state, exitSession, resetGame } = useArcadeMemoryPairs()
   const { setFullscreenElement } = useFullscreen()
   const { canModifyPlayers } = useArcadeRedirect({ currentGame: 'matching' })
   const gameRef = useRef<HTMLDivElement>(null)
@@ -37,6 +37,14 @@ export function MemoryPairsGame() {
         exitSession()
         router.push('/arcade')
       }}
+      onSetup={() => {
+        // Exit current session and return to arcade (which will redirect to setup)
+        exitSession()
+        router.push('/arcade/matching')
+      }}
+      onNewGame={() => {
+        resetGame()
+      }}
     >
       <StandardGameLayout>
       <div