Persist one browser user agent for Axios and WebSockets

lib/contract-resolver.ts

@@ -12,7 +12,7 @@
  * Results are cached and refreshed periodically (default: every 30 minutes).
  */
 
-import axios from 'axios';
+import axios from './http-client';
 import { errorMessage } from './platform-client';
 
 interface ContractInfo {
@@ -82,7 +82,7 @@ async function getContinuousExchange(product: string): Promise<string | null> {
     try {
         const res = await axios.get(
             `https://query1.finance.yahoo.com/v8/finance/chart/${encodeURIComponent(product + '=F')}`,
-            { params: { range: '1d', interval: '1d' }, headers: { 'User-Agent': 'Mozilla/5.0' } }
+            { params: { range: '1d', interval: '1d' } }
         );
         const meta = res.data?.chart?.result?.[0]?.meta;
         if (!meta) return null;
@@ -117,7 +117,7 @@ async function findHighestVolumeContract(
             try {
                 const res = await axios.get(
                     `https://query1.finance.yahoo.com/v8/finance/chart/${encodeURIComponent(ticker)}`,
-                    { params: { range: '1d', interval: '1d' }, headers: { 'User-Agent': 'Mozilla/5.0' } }
+                    { params: { range: '1d', interval: '1d' } }
                 );
                 const result = res.data?.chart?.result?.[0];
                 const meta = result?.meta;