- Fix broken dark mode by correcting palette toggle order and setting primary/accent to custom
- Rewrite extra.css with full GitHub Primer color scheme (light: #ffffff/#0969da, dark: #0d1117/#1f6feb)
- Style header, sidebar, buttons, cards, code blocks, and tables to match GitHub aesthetic
- Add Open Graph and Twitter Card meta tags via main.html override
- Add JSON-LD structured data (WebSite + SoftwareApplication schemas)
- Add announcement bar (v2.1.2 release)
- Add custom 404 page with navigation buttons
- Remove inline styles from skills/index.md (moved to extra.css)
- Mobile responsive adjustments for hero sections
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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