Currently there is just a "git-bug bug" command to list all known issues.

But as an issue is not always a bug, but could also be a change or feature request, IMHO "bug" as a command to list all issues is somehow misplaced. It should be "list", which is more logical, like:

git-bug list

Could you set "list" as a synonym for "bug", or even consider replacing "bug" with "list"?