Thanks for the explanation. You’re right, it’s indeed not portable to have to install the font.
But regarding the showing up as a Unicode character, it looks like no data is added in the file.
When I create a .md file with a supercharged link like this:
It looks like this in the file tree:
And when I open the file in TextEdit or BBEdit in plaintext. I don’t see any code.
The ‘A’ before Testperson is for sorting purposes because I wanted to avoid publishing the name of real people.
Maybe you can check what you see in a file with a custom font icon?
Could be that the plugin just does some smart trickery in the background and adds it as a ::before or ::after with CSS when parsing the note in Obsidian.