there's https://lemmyverse.link, but a native way of doing so would be nice.

Ultimately, using a protocol handler instead of URLs would solve that (ie: like how mailto links works).

Photon does that, and so does Tesseract, but it only works if you're logged in since it relies on resolve object API call (which requires authentication)

Would upvote this suggestion more tan once, if I could.

Search the remote post URL in your search bar, it will open locally

I actually think some URI like fediverse:... might be better. You know, something like the mailto:coolguy@coolmail.com URI that works across all supported email websites or even apps.