Update

src/config/index.ts

@@ -56,6 +56,12 @@ export function loadConfig(): Config {
   }
   rawConfig.openrouter.apiKey = process.env.OPENROUTER_API_KEY || rawConfig.openrouter.apiKey;
 
+  // Override browser settings from environment
+  if (process.env.BROWSER_HEADLESS !== undefined) {
+    if (!rawConfig.browser) rawConfig.browser = {};
+    rawConfig.browser.headless = process.env.BROWSER_HEADLESS === 'true';
+  }
+
   if (!rawConfig.openrouter.apiKey) {
     throw new Error('OPENROUTER_API_KEY environment variable is required');
   }