>Since users have a public profile, there should be a way to search for them. Perhaps change the text in the "find packages..." search box to be "search forgebox..." and have it search for users as well. Not sure how that would show up in results though.
Have the ability to show a small help screen like seen on the screenshot below when you are in focus in the input.
Have the ability to search globally (no context) or add a search context:
Good point. But not sure how it would work. How about a new route called users. Which is a directory like a phone book with search there.
That could work.