I want issue style references for files on GitHub

One feature I'd love in GitHub is first-class file references in issues and discussions.

Issues, PRs, and users all have autocomplete, linking, and inline previews. I'd like the same for files: start typing a path, get autocomplete, insert a reference, and see basic inline information without leaving the page.

For repositories with lots of design discussions, architecture decisions, or documentation, file references are often just as important as issue references.

This could follow Obsidian-style wiki-link where I stype [[ and auto-complete starts up. And `path to file.md gets turned into a link (or even better title from that file if there is one).