Your private /deploy shortcut saves you twenty minutes a day and helps exactly one person. Plugins move the same workflow into a parameterized package every team installs in minutes. The full lifecycle — skill, context files, userConfig, MCP wiring, hooks, marketplace.
Roughly nine in ten skill files fail one of five basic checks. The body is rarely the problem. The description is — that 100-token blurb is the only thing the agent reads when deciding whether to load you. Engineer it, or stay invisible.