Vercel Cli

This one's for anyone deploying to Vercel from the terminal. It covers the full CLI surface: deploys, environment variables, logs, domains, the works. The biggest gotcha it helps with is project linking in monorepos, where using `vercel link` instead of `vercel link --repo` will quietly break things. It includes a decision tree that routes you to the right reference based on what you're trying to do, plus a solid list of anti-patterns like auto-linking in CI or forgetting `--yes` in automated scripts. If you're doing anything beyond clicking deploy in the dashboard, this gives you the command-line expertise to do it right the first time.