post/user link resolution ...
like this: https://j12t.social/@j12t. Unfortunately, this will simply open it in web browser, when it would've been better if the embed resolver figured out it's a fediverse link and provided this information to other instances that could then open the link as a user profile (as if it was a mention). Some fediverse apps do this where they try to resolve the link when you open it and then open it accordingly in the app if possible, but that's an app-specific hack, and kinda annoying UX-wise.
Source: https://mstdn.social/@brawaru/114073616610017653
Source: https://mstdn.social/@brawaru/114073616610017653