RubyCMS is an install-only generator: `ruby_cms install` copies admin controllers, views, models, helpers, and JavaScript for the modules you select into your host app, which then runs entirely on the copied code (no runtime engine to mount). `ruby_cms update`/`sync` keep the copied files in step with the gem templates. Modules include: - Visual editor with inline editing - Content blocks with rich text support - Permission-based access control - User management & passkey (WebAuthn) login - Analytics, audit log, media library, redirects, and more