change header title to "We❤️Eurovision" with rainbow gradient

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/client/src/components/room-layout.tsx

@@ -9,7 +9,7 @@ export function RoomLayout({ roomCode, connectionStatus }: RoomLayoutProps) {
 	return (
 		<div className="flex min-h-screen flex-col">
 			<header className="sticky top-0 z-50 flex items-center justify-between border-b bg-background px-4 py-3" style={{ paddingTop: "max(0.75rem, env(safe-area-inset-top))" }}>
-				<span className="text-lg font-bold">I❤️ESC</span>
+				<span className="text-lg font-bold" style={{ backgroundImage: "linear-gradient(90deg, #e40303, #ff8c00, #ffed00, #008026, #004dff, #750787)", WebkitBackgroundClip: "text", WebkitTextFillColor: "transparent", backgroundClip: "text" }}>We❤️Eurovision</span>
 				<div className="flex items-center gap-2">
 					<span className="font-mono text-sm font-bold tracking-widest">{roomCode}</span>
 					<span