fix(retry): avoid CPU busy wait

src/lib/rateLimit.ts

@@ -169,20 +169,8 @@ export async function checkRateLimit(
  * @param seconds - Number of seconds to delay
  * @returns Promise that resolves after the specified delay
  */
-export async function delayRequest(seconds: number): Promise<void> {
-  return new Promise((resolve) => {
-    // Use a simple delay implementation for Workers environment
-    const start = Date.now();
-    const checkTime = () => {
-      if (Date.now() - start >= seconds * 1000) {
-        resolve();
-      } else {
-        // Use minimal delay to prevent blocking
-        Promise.resolve().then(checkTime);
-      }
-    };
-    checkTime();
-  });
+export function delayRequest(seconds: number): Promise<void> {
+  return new Promise((resolve) => setTimeout(resolve, seconds * 1000));
 }
 
 /**