fix normalize in different place

packages/core/src/utils/proxyUtils.ts

@@ -11,8 +11,13 @@
  * This function adds the "http://" prefix if missing, since HTTP proxies are
  * the most common default.
  *
+ * Note: Only HTTP and HTTPS proxies are supported. SOCKS proxies (socks://,
+ * socks4://, socks5://) are NOT supported because the underlying undici library
+ * does not support them. See: https://github.com/nodejs/undici/issues/2224
+ *
  * @param proxyUrl - The proxy URL to normalize
  * @returns The normalized proxy URL with protocol prefix, or undefined if input is undefined/empty
+ * @throws Error if a SOCKS proxy URL is provided
  */
 export function normalizeProxyUrl(
   proxyUrl: string | undefined,
@@ -27,11 +32,20 @@ export function normalizeProxyUrl(
   }
 
   // Check if the URL already has a protocol prefix
-  // Support http, https, socks, socks4, socks5 protocols
-  if (/^(https?|socks[45]?):\/\//i.test(trimmed)) {
+  // Only support http and https protocols (undici limitation)
+  if (/^https?:\/\//i.test(trimmed)) {
     return trimmed;
   }
 
+  // Reject SOCKS proxies - undici does not support them
+  if (/^socks[45]?:\/\//i.test(trimmed)) {
+    throw new Error(
+      `SOCKS proxy is not supported. The underlying HTTP client (undici) only supports HTTP and HTTPS proxies. ` +
+        `Please use an HTTP/HTTPS proxy instead, or set up a SOCKS-to-HTTP proxy converter. ` +
+        `See: https://github.com/nodejs/undici/issues/2224`,
+    );
+  }
+
   // Add http:// prefix for proxy URLs without protocol
   // HTTP is the default for most proxy configurations
   return `http://${trimmed}`;