- Fix community section gap (6px → 16px)
- Add dingyi tweet showing cmux went semi-viral in China
- Change "semi-viral in Japan" to "viral in Japan" + "semi-viral in China"
## Summary
- Add Community (testimonials) section to homepage with inline avatars
- Add FAQ section sourced from HN discussion questions
- Add hero screenshot with next/image optimization
- Add Show HN blog post with react-tweet embeds, star history chart, and HN quotes
- Redesign footer with 4-column grid layout (Product, Resources, Legal, Social)
- Add Download/GitHub CTA buttons at bottom of homepage and blog post
- Add dev spacing controls for features, FAQ, and community sections
- Fix hydration error (JSON-LD moved to head)
- SEO: full metadata on blog posts, robots.txt, blog pages in sitemap, canonical URLs
- Replace em dashes site-wide, fix notification descriptions
## Testing
- `bun tsc --noEmit` passes clean
- Dev server verified on port 3001
## Related
- Task: Add wall of love to main web page + landing screenshot
