fix(ui): align delete icon inline in game list

Apply game-item grid layout to game list rows and switch to two-column layout (1fr auto) so the delete action has a fixed-width slot on the right.

Keeps existing delete button and accessibility attributes; prevents layout stretch.
No behavioral changes beyond layout; click targets unchanged.

Refs #26

src/components/GameList.tsx

@@ -82,7 +82,9 @@ export default function GameList({
             <Card
               key={game.id}
               variant="elevated"
-              className={game.status === 'completed' ? styles['completed'] : styles['active']}
+              className={
+                styles['game-item'] + ' ' + (game.status === 'completed' ? styles['completed'] : styles['active'])
+              }
             >
               <div 
                 className={styles['game-info']}