Decouple admin from public max-w-7xl via (site) route group.

Public chrome and width live only under (site). /admin and /client inherit the root layout alone, so housekeeping width is no longer tied to the public template.

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

src/app/(site)/news/loading.tsx

@@ -0,0 +1,15 @@
+export default function NewsLoading() {
+	return (
+		<div
+			style={{ display: "flex", justifyContent: "center", padding: "4rem 0" }}
+		>
+			<div
+				className="animate-spin w-8 h-8 border-4 rounded-full"
+				style={{
+					borderColor: "var(--color-primary)",
+					borderTopColor: "transparent",
+				}}
+			/>
+		</div>
+	);
+}