fix(make): release must not abort when the version bump is a no-opv0.1.0

Cutting a version whose files already carry it -- which is how the first
tag went, and what any re-run after a failed gate looks like -- leaves
nothing staged, and git commit aborts the target on "nothing to commit"
despite everything being in order. The commit is now conditional on
something actually being staged, and an existing tag is refused
explicitly rather than surfacing as a bare git error.

0 files changed, 0 insertions, 0 deletions