feat: get active user count

server/src/browser-management/classes/BrowserPool.ts

@@ -252,5 +252,12 @@ export class BrowserPool {
         return Object.keys(this.pool).length;
     };
 
+    /**
+     * Returns the total number of active users (users with browsers).
+     */
+    public getActiveUserCount = (): number => {
+        return this.userToBrowserMap.size;
+    };
+    
     
 }