Implemented better testing and fixed skipepd frames

Source/Components/Interfaces/DebugService/DebugService.h

@@ -76,6 +76,13 @@ private:
     bool        isServer;
     bool        suppressTimeoutLogs;
 
+    /** Optional authentication token (CR-5).  If set (non-empty), the first
+     *  command from a new TCP client must be "AUTH <token>".  All other
+     *  commands are rejected until the client authenticates.  If empty
+     *  (default), no authentication is required (back-compat). */
+    StreamString authToken;
+    bool        clientAuthenticated;
+
     BasicTCPSocket tcpServer;
     UDPSServer     udpsServer;   ///< Handles fragmentation and multi-client sending