SEO: Add sitemap.xml and robots.txt

[AbdalrahmanWael]

Summary

Add sitemap.xml and robots.txt to the website so search engines can discover and index pages more reliably.

Current state

The repo currently does not generate a sitemap or serve a robots file.

This Eleventy setup already defines the site structure and blog collections, but there is no sitemap generation and no robots.txt in the project.

Why this matters

• Improves crawlability and indexing
• Helps search engines discover blog posts and main pages
• Establishes basic SEO hygiene for a public content site

Proposed change

• Generate /sitemap.xml during the Eleventy build
• Add /robots.txt
• Include the main public pages and blog posts in the sitemap
• Reference the sitemap from robots.txt
• Keep URLs based on the production site URL

Acceptance criteria

• /sitemap.xml is generated in the built site
• /robots.txt is present in the built site
• robots.txt references the sitemap URL
• Main public pages are included in the sitemap
• Blog posts are included in the sitemap
• Sitemap URLs use the production domain

Implementation notes

• This can be implemented with an Eleventy sitemap plugin or a custom generated template
• The existing site configuration in .eleventy.js already provides the right foundation for generating sitemap entries from the site’s pages and blog content