DeskPixie landing page

Marketing site for DeskPixie, modeled on the structure of heard.dev.

npm install
npm run dev    # http://localhost:3000
npm run build  # / is prerendered as static HTML

• app/page.tsx: all sections (hero, features 01–05, pixie picker, closing CTA, footer)
• app/globals.css: design tokens and styles (navy and pixie green from the app icon, Geist Pixel display font)
• components/: client islands (hero demo, session picker, pixie picker, nav, motion toggle) and the CSS sprite
• lib/site.ts: download URL, requirements line, pixie names
• public/pixies/*.png: sprite sheets copied from deskpixie/pixies/<id>/sheet.png (32px cells, 8 frames per row)