style(frontend): apply ultracite 7.12 formatting and lint rules

frontend/src/app.html

@@ -2,8 +2,8 @@
 <html lang="en">
 	<head>
 		<meta charset="utf-8" />
-		<meta name="viewport" content="width=device-width, initial-scale=1" />
-		<meta name="text-scale" content="scale" />
+		<meta content="width=device-width, initial-scale=1" name="viewport" />
+		<meta content="scale" name="text-scale" />
 		<script>
 			(() => {
 				const stored = localStorage.getItem("bg.theme");