fix: add cn utility and fix import path in AntiCheatBadge

lib/utils.ts

@@ -0,0 +1,8 @@
+/**
+ * Simple class name utility that filters out falsy values and joins with spaces.
+ * This is a lightweight alternative to clsx/tailwind-merge for projects that
+ * don't need the full complexity of those libraries.
+ */
+export function cn(...inputs: (string | boolean | undefined | null)[]): string {
+  return inputs.filter(Boolean).join(" ");
+}