Use whenever you need to understand how this theme works — adding pages, managing content, configuring the site, using partials/components/modules, project architecture, scripts, or styling/theming (Tailwind v4, Bootstrap 5, or a hybrid — verify which). Use for ANY question about the structure, usage, or customization of the template or theme.
Helps users discover and install agent skills when they ask "how do I do X", "find a skill for X", "is there a skill that can...", or want to extend capabilities.