If you click the Raycast link in one of these PRs it links to: https://gh.io/cca-raycast-docs

So I think they’re injecting this as a tip on using Copilot, that just happens to be their integration with Raycast.

I have no idea what their actual partnership with Raycast looks like, maybe this is part of what they offered them? But it’s not a traditional link to another product ad like it appears to be from Raycast being a link.