- Create AdminRoleEdit.tsx for /admin/roles/create and /admin/roles/:id/edit
- Create AdminPolicyEdit.tsx for /admin/policies/create and /admin/policies/:id/edit
- Remove create/edit modals from AdminRoles.tsx and AdminPolicies.tsx
- Add new lazy routes in App.tsx with proper permission gates
- Keep delete confirmation as small inline modal (appropriate for destructive action)