Well that was easy. Two lines of code. Just added OpenWebAuth to Opensearch as described above. So now if you search my site or channel **from the browser** it will be able to show you protected/private conversations/photos/videos that only you have permission to view.
Of course this of course only applies if your fediverse software is single sign-on enabled using OpenWebAuth.
Think I might go back to calling it "Magic Auth" because this is freaking amazing.