fix: ensure proxy is used by @polymarket/clob-client

Add proxy-patch.cjs that patches https.request BEFORE axios is loaded.
This forces all Polymarket API calls through the proxy, including
internal axios instances used by @polymarket/clob-client.

Import patch as very first thing in sniper.js and sniper-tui.js.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/sniper-tui.js

@@ -7,6 +7,9 @@
  *           npm run sniper-tui-sim   (simulation)
  */
 
+// Load proxy patch BEFORE any other imports (must patch https before axios is loaded)
+import './utils/proxy-patch.cjs';
+
 import { validateMMConfig } from './config/index.js';
 import config from './config/index.js';
 import logger from './utils/logger.js';

src/sniper.js

@@ -9,6 +9,9 @@
  * For the TUI dashboard version, use: npm run sniper-tui
  */
 
+// Load proxy patch BEFORE any other imports (must patch https before axios is loaded)
+import './utils/proxy-patch.cjs';
+
 import { validateMMConfig } from './config/index.js';
 import config from './config/index.js';
 import logger from './utils/logger.js';

src/utils/proxy-patch.cjs

@@ -0,0 +1,48 @@
+/**
+ * proxy-patch.cjs
+ * CommonJS module to patch https.request BEFORE any axios imports.
+ * This ensures @polymarket/clob-client uses the proxy.
+ *
+ * Must be imported as very first thing in the app.
+ * In ES modules: import './proxy-patch.cjs'
+ */
+const https = require('https');
+const http = require('http');
+const { HttpsProxyAgent } = require('https-proxy-agent');
+
+const PROXY_URL = process.env.PROXY_URL || '';
+
+if (PROXY_URL) {
+    const agent = new HttpsProxyAgent(PROXY_URL);
+    const originalHttpsRequest = https.request.bind(https);
+
+    // Polymarket domains that must go through proxy
+    const POLY_DOMAINS = [
+        'polymarket.com',
+        'clob.polymarket.com',
+        'gamma-api.polymarket.com',
+        'data-api.polymarket.com',
+    ];
+
+    function shouldProxy(url) {
+        try {
+            const hostname = new URL(url).hostname;
+            return POLY_DOMAINS.some(domain => hostname === domain || hostname.endsWith(`.${domain}`));
+        } catch {
+            return false;
+        }
+    }
+
+    // Patch https.request
+    https.request = function(...args) {
+        const url = args[0];
+        if (typeof url === 'string' && shouldProxy(url)) {
+            const options = args[1] || {};
+            options.agent = agent;
+            return originalHttpsRequest(url, options);
+        }
+        return originalHttpsRequest(...args);
+    };
+
+    console.log(`[proxy-patch] HTTPS patched for Polymarket routing via proxy`);
+}