Clean up admin hub UX: tabs, chrome, and redundant headers.

Wire orphan routes into hub tabs, group Radio into primary/tools rows, show theme/language once on desktop, and remove duplicate page titles under AdminHubChrome.

Co-authored-by: Cursor <[email protected]>

src/app/admin/emulator/page.tsx

@@ -49,13 +49,6 @@ export default async function AdminEmulator() {
 
 	return (
 		<main>
-			<h1>{t("title")}</h1>
-			<p className="text-xs theme-text-muted dark:theme-text-muted mb-3">
-				{t.rich("subtitle", {
-					code: (chunks) => <code>{chunks}</code>,
-				})}
-			</p>
-
 			<div className="grid grid-cols-[repeat(auto-fit,minmax(180px,1fr))] gap-3.5 mb-6">
 				<StatusCard
 					label={t("settingsKeys")}