What problem does it solve? Global system operations like purging all resource revision history need a dedicated, tightly secured administration area rather than ordinary site-scoped pages or assignable permissions, and this Skill defines how to build that boundary correctly in the Go CMS monorepo. ## Core Features & Use Cases - Protected admin-group enforcement: Centralizes membership checks against the built-in admin group code across backend navigation, API handlers, and application services. - Defense-in-depth security boundary: Combines backend navigation visibility, frontend route guards, and backend endpoint authorization so direct API calls by non-admin users are rejected. - Destructive action UX with confirmation: Defines typed-confirmation flows (e.g., entering DELETE) with counts and impact descriptions for irreversible global operations like purging all revision history. - Use Case: When adding a global "purge all resource revisions" feature, use this Skill to place it under /api/administration/resource-revisions, hide the navigation item from non-admin users, and enforce admin-group membership in the service layer. ## Quick Start Ask the AI to add a global administration page that lets members of the built-in admin group view revision statistics and purge all resource revision history with a typed confirmation.