CHANGELOG.md

Previously, invalid or non-existent JSON blobs for the local image embedder
resulted in the entire page failing to compile.

Now, they just produce an on-page error.
I also created an embedder test page for this.

I also added the robots.txt file from
https://github.com/ai-robots-txt/ai.robots.txt
to the CI pipeline so the latest version will be pulled automatically.

Finally, I created a new blog post.