v0.1.10

Summary

• Enable Open Graph and Twitter Card meta tags via _quarto.yml for rich link previews on social media
• Add site-url for canonical URLs and automatic sitemap generation
• Add description frontmatter to all .qmd pages for <meta name="description"> tags
• Improve alt text on homepage screenshot image

Closes #37

Test plan

• Verify Quarto renders successfully with quarto render
• Inspect generated HTML for <meta name="description">, og: tags, and twitter: tags
• Confirm sitemap.xml is generated in _docs/

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