Make game cards entirely clickable

[Copilot]

Each game card required clicking a small "Play" button; the rest of the card surface was inert. The entire card should act as the click target.

Changes

app/components/gameCard.js

• Moved the game:select dispatch from button to the wrapping article element. Button clicks bubble naturally, so keyboard Enter/Space on the focused Play button continues to work without additional wiring.

// Before: only the button dispatched the event
button.addEventListener('click', () => { button.dispatchEvent(...) });

// After: any click anywhere on the card dispatches the event
article.addEventListener('click', () => { article.dispatchEvent(...) });

app/styles/game-card.css

• Added cursor: pointer to .game-card so the pointer cursor covers the whole tile.
• Added .game-card:focus-within outline — when the inner Play button is keyboard-focused, the ring wraps the entire card rather than just the button.

app/components/tests/gameCard.test.js

• Added test covering a direct click on the article element (outside the button) to verify the game:select event fires with the correct gameId.

[acrosman]

Very close, but clean up the noted comment please.

Resolved issues.