feat(widgets): add phase 4 validation and accessibility

assets/admin/src/constants/admin-sections.js

@@ -1,10 +0,0 @@
-/**
- * Admin sections — central menu and route registry.
- *
- * Sidebar menu, route metadata, schema domain mapping, and deferred-page
- * planning details are all registered in domain modules to avoid drift between
- * the navigation tree and router definitions while keeping each file focused.
- */
-
-export { ADMIN_SECTIONS, getAdminSections, getAllAdminPages } from './sections/index.js'
-export { renderFaIcon, customPage, schemaPage, deferredPage } from './sections/helpers.js'