- Integrate @astrojs/sitemap for automatic sitemap generation
- Add robots.txt with sitemap reference
- Add Open Graph and Twitter Card meta tags to Layout
- Add canonical URL and structured data slot to Layout
- Add JSON-LD schema (WebSite, CollectionPage, Book, BreadcrumbList)
- Create custom 404 page with navigation links
- Create default OG image (SVG with graph-paper theme)
- Wire SITE_URL through Docker build args for production builds
- Update Caddyfile for proper 404 handling instead of SPA fallback
Author section on /mims with portrait (2016, public domain),
Vietnam rocket photo (1967, public domain), and TX-1 rocket
photo (1970, CC BY-SA 4.0). All with proper attribution.
Brief mention added to homepage heritage section.
