Improve homepage feature copy

[hyfdev]

What changed

• Make Native performance, WebAssembly support, and Yoga compatibility the three homepage feature cards.
• Explain the concrete role of each package while keeping the existing VitePress three-card layout.
• Keep the Wasm claim within its current Node.js and bundled-browser support.
• Record these three messages as the homepage priorities in the website project context.

Why

These three capabilities best explain the TaffyJS package family at a glance. The previous copy gave separate space to the direct binding model and the shared API, which made the more important WebAssembly and Yoga stories less visible.

Impact

Visitors now see the native, portable, and Yoga-compatible paths immediately on the landing page.

Checks

• vp run check:format
• vp run check:lint
• vp run build:website
• Independent adversarial copy review

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