Sitemaps, Robots, And Custom Error Templates For Public Sites

Custom themes now get generated sitemap.xml, robots.txt, favicon routes, and custom error templates. These are the basic production surfaces that search engines, browsers, and visitors expect from any live site.

Production-ready by default

A theme is not production-ready until it can handle crawlers, missing pages, and browser tab icons cleanly. These features make that possible without manual configuration for each new site launch.

Custom error templates

404 and other error pages can now be themed to match the rest of the site rather than showing a generic platform error page. Teams can design the error experience as part of the site's editorial identity.