it does not. i did look into it though [1] and at the time didn't find a good client side vector search lib. i wanted to avoid in-memory vector search since the size of the data can be significant depending on browsing habits. It is definitely possible though. I got a proof of concept working with victor [2] and client-side embeddings but it wasn't good enough IMO to ship.
[1]: https://github.com/iansinnott/full-text-tabs-forever/issues/... [2]: https://github.com/not-pizza/victor