How about something like [`input`](magic-link)? I came up with this for https://codeberg.org/macchiato ( though it's not yet implemented in the new project, just in the predecessor, https://gitlab.com/ResourcesCo/notebook ). The backquotes differentiate from non-magic links. (I tried badges, but they aligned weirdly.)
Another thing you could do is just decide against MD(SVE)X the format and keep the style and transform inline codeblocks that match. (MRR grew by `<Value data={data.mrr}>` yesterday.)
That you said Markdown to me says you aren't on sold on using an incompatible syntax.