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/sounds/page.tsx

@@ -67,18 +67,13 @@ export default async function SoundsPage() {
 
 	return (
 		<div className="space-y-6">
-			<div>
-				<h1 className="text-3xl font-bold tracking-tight">Song Disks</h1>
-				<p className="text-muted-foreground">
-					Upload and manage MP3 files for song disks played by in-game
-					jukeboxes. Files are served from <code>{baseUrl}</code>{" "}
-					(configurable in{" "}
-					<a href="/admin/settings" className="underline">
-						Settings
-					</a>
-					).
-				</p>
-			</div>
+			<p className="text-muted-foreground">
+				Files are served from <code>{baseUrl}</code> (configurable in{" "}
+				<a href="/admin/settings" className="underline">
+					Settings
+				</a>
+				).
+			</p>
 			<SoundsClient
 				soundtracks={soundtracks}
 				canEdit={canEdit}