Added unified MAC CLI command surface

Property	Value
description	Added the single `mac-cli <action> ...` public command surface for repo workflows.
version	1.0.0
type	Create
related	MAC CLI, RepoHelpers

• Added mac-cli <action> ... as the only human-facing RepoHelpers command surface.
• Added the current action set: make, init, go, open, code, hub, list, check, add, commit, save, push, pull, sync, merge, tag, release, clone, rename, space, auth, help, man, and test.
• Kept the documented local convenience alias as mac via Set-Alias mac mac-cli.
• Kept removed pre-rename public command surfaces out of the shipped stable baseline.