I continued with my completely pointless but very fun static site generator today, adding "related posts" to each post. On build, it pulls down an open-source embedding model, creates embeddings for all of the posts, and uses cosine similarity to find related posts. It then shoves a blob of JSON into a data directory and renders via an include in the post template. I've only checked a few of the posts, but it seems to be doing a pretty good job. If you can't over-engineer your personal website, what can you do?