This is a really cool idea. I love that you expose the personal profile as markdown. Reminds me of this article and exposing the system prompt: https://koomen.dev/essays/horseless-carriages/. Well done!
The tension we have been finding is that we dont want to require people to "know how to prompt" to get value out of having a profile, hence our ongoing thinking around how to bootstrap good personal profiles from various data sources.
As Koomen notes, a good profile feels like it could be the best weapon against "AI slop" in a case I want something sharp and specific. But getting to that requires knowing how to prompt most of the time.