Bug fixes and performance improvements

services/dns.ts

@@ -0,0 +1,20 @@
+export const DnsService = {
+  async resolve(hostname: string): Promise<string | null> {
+    try {
+      const response = await fetch(
+        `https://cloudflare-dns.com/dns-query?name=${hostname}&type=A`,
+        {
+          headers: { accept: 'application/dns-json' },
+          credentials: 'omit'
+        }
+      );
+
+      if (!response.ok) return null;
+
+      const data = await response.json();
+      return data.Answer?.find((r: any) => r.type === 1)?.data || null;
+    } catch (error) {
+      return null;
+    }
+  }
+};