Add per-page metadata, Open Graph / Twitter tags, canonical URLs,
hreflang, sitemap generation, robots.txt, and JSON-LD structured data
for the bilingual (en/cn) documentation site.
- Replace VitePress with Fumadocs + Next.js for documentation site
- Configure i18n (English + 简体中文) with language switcher
- Migrate all 17 guide documents to MDX format with updated content
- Add ocean theme, GitHub/Discord/QQ social links
- Update GitHub Actions workflow for Next.js static export
- Update .gitignore for .next, out, .source directories
Full documentation site with English and Chinese versions:
- Home page with feature cards and screenshots
- 17 guide pages per language covering all features
- Local search, language switcher, sidebar navigation
t8y2