Update Installed Skills

It wraps the ai-agent-skills CLI with a sensible workflow: always dry-run first, check what's installed, review changes before applying. The real value is in the guardrails around bulk updates and the heads-up about gotchas like manually edited files getting clobbered during sync. If you're running skills from GitHub sources, be aware that sync does a fresh clone, so dead repos will fail. It's defensive by design, which matters when you're updating tools that an agent relies on in production.