Refactor: three XPL2 ports, EchoServer class, dark debug console, qmllint clean

- Xpl2Client: replace single port with commandPort/imagingPort/statusPort (9110/9111/9112)
- Mock server: extract EchoServer class from lambda-based listenOn()
- Demo: dark debug console matching BobinkQtOpcUa style, 2-column connection layout
- Fix qmlls module resolution via IMPORT_PATH in qt_add_qml_module()
- Add pragma ComponentBehavior: Bound, fix all qmllint warnings

1 files changed, 24 insertions, 0 deletions

diff --git a/mock-server/EchoServer.h b/mock-server/EchoServer.h
new file mode 100644
index 0000000..2e51b1e
--- /dev/null
+++ b/mock-server/EchoServer.h
@@ -0,0 +1,24 @@
+/**
+ * @file   EchoServer.h
+ * @brief  Simple TCP echo server for a single port.
+ */
+#pragma once
+
+#include <QTcpServer>
+
+class EchoServer : public QTcpServer
+{
+  Q_OBJECT
+
+public:
+  EchoServer (quint16 port, const char *name, QObject *parent = nullptr);
+
+private slots:
+  void onNewConnection ();
+  void onClientReadyRead ();
+  void onClientDisconnected ();
+
+private:
+  const char *m_name;
+  quint16 m_port;
+};