Skills vs. slash commands: when to use which

Slash commands are user-invoked. Type /release and the body runs as a prompt. They're imperative — "do this thing now."

Skills are auto-activated capabilities. The harness loads them when context matches. They bundle a SKILL.md *plus* resources and scripts. They're descriptive — "here's how to do this whole class of thing."

If you'd type /foo once a week, make it a slash command. If you'd want Claude to *know how* to do foo without being told, make it a skill.