feat: overhaul GitHub Pages site for polish and virality

- Animated mesh gradient hero with dot grid overlay and pulsing logo glow

- Animated terminal demo section showing a live Hollow Knight lookup

- Stat counter animation (count up on scroll) with npm downloads badge

- OG/Twitter Card meta tags with 1200x630 social sharing image

- Syntax-highlighted JSON in install code block

- Fixed copy feedback: toast notification replaces broken ::after approach

- Footer badges row (npm, stars, last commit) and Star on GitHub CTA

- Optimized logo: 256px hero (47KB) + 64px nav (6KB), down from 1.4MB

- Mobile: nav closes on link click, terminal responsive, prefers-reduced-motion

Made-with: Cursor

Author: TMHSDigital