RBAC/Permissions Builder Implement flexible role-based access control systems. Permission Matrix Route Guards (Express) Policy Pattern Resource Ownership UI Permission Hints Best Practices - Define permissions granularly (resource:action) - Check at multiple layers (route, controller, UI) - Use policies for complex rules - Cache permission checks - Log permission denials - Test all permission paths Output Checklist - [ ] Permission enum/constants - [ ] Role-to-permission mapping - [ ] Route guard middleware - [ ] Policy classes for complex rules - [ ] Ownership checking utilities - [ ] Permis…