A few things I think are interesting technically:
Generated pages are zero JavaScript, pure HTML and CSS. They load fast everywhere. The whole stack is Cloudflare Workers + GitHub Pages free tiers. No database, no server costs. Every page ships with JSON-LD, Open Graph, and Twitter Card metadata, plus a dynamically generated social preview image (separate Cloudflare Worker). There are 5 themes with hand-picked typography pairings (JetBrains Mono, Source Serif, IBM Plex, Inter, etc).
The edit flow uses a token instead of accounts because I wanted zero friction and zero stored personal data. You publish, save your token, and that's it. The whole thing is MIT-licensed and self-hostable if you want to run your own instance.