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

4 files changed, 80 insertions, 51 deletions

diff --git a/mock-server/CMakeLists.txt b/mock-server/CMakeLists.txt
index 52bfabb..f5d54f8 100644
--- a/mock-server/CMakeLists.txt
+++ b/mock-server/CMakeLists.txt
@@ -1,4 +1,4 @@
-qt_add_executable(Xpl2MockServer main.cpp)
+qt_add_executable(Xpl2MockServer main.cpp EchoServer.h EchoServer.cpp)
 
 set_target_properties(Xpl2MockServer PROPERTIES RUNTIME_OUTPUT_DIRECTORY
                                                 "${PROJECT_BINARY_DIR}/bin")
diff --git a/mock-server/EchoServer.cpp b/mock-server/EchoServer.cpp
new file mode 100644
index 0000000..43fc6f9
--- /dev/null
+++ b/mock-server/EchoServer.cpp
@@ -0,0 +1,50 @@
+/**
+ * @file   EchoServer.cpp
+ * @brief  Simple TCP echo server for a single port.
+ */
+#include "EchoServer.h"
+
+#include <QTcpSocket>
+
+EchoServer::EchoServer (quint16 port, const char *name, QObject *parent)
+    : QTcpServer (parent), m_name (name), m_port (port)
+{
+  connect (this, &QTcpServer::newConnection, this,
+           &EchoServer::onNewConnection);
+
+  if (!listen (QHostAddress::Any, port))
+    qCritical ("Failed to listen on %s port %d: %s", m_name, m_port,
+               qPrintable (errorString ()));
+  else
+    qInfo ("Listening on %s port %d", m_name, m_port);
+}
+
+void
+EchoServer::onNewConnection ()
+{
+  while (auto *sock = nextPendingConnection ())
+    {
+      qInfo ("[%s:%d] client connected", m_name, m_port);
+      connect (sock, &QTcpSocket::readyRead, this,
+               &EchoServer::onClientReadyRead);
+      connect (sock, &QTcpSocket::disconnected, this,
+               &EchoServer::onClientDisconnected);
+    }
+}
+
+void
+EchoServer::onClientReadyRead ()
+{
+  auto *sock = qobject_cast<QTcpSocket *> (sender ());
+  QByteArray data = sock->readAll ();
+  qInfo ("[%s:%d] echo %lld bytes", m_name, m_port, data.size ());
+  sock->write (data);
+}
+
+void
+EchoServer::onClientDisconnected ()
+{
+  auto *sock = qobject_cast<QTcpSocket *> (sender ());
+  qInfo ("[%s:%d] client disconnected", m_name, m_port);
+  sock->deleteLater ();
+}
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;
+};
diff --git a/mock-server/main.cpp b/mock-server/main.cpp
index 4818d6f..0694e4d 100644
--- a/mock-server/main.cpp
+++ b/mock-server/main.cpp
@@ -2,63 +2,18 @@
  * @file   main.cpp
  * @brief  Mock XPL2 server — echoes back on three ports.
  */
-#include <QCoreApplication>
-#include <QTcpServer>
-#include <QTcpSocket>
-
-static QTcpServer *
-listenOn (quint16 port, const char *name, QObject *parent)
-{
-  auto *server = new QTcpServer (parent);
-
-  QObject::connect (
-      server, &QTcpServer::newConnection, server,
-      [=] ()
-        {
-          while (auto *sock = server->nextPendingConnection ())
-            {
-              qInfo ("[%s:%d] client connected", name, port);
-
-              QObject::connect (sock, &QTcpSocket::readyRead, sock,
-                                [=] ()
-                                  {
-                                    QByteArray data = sock->readAll ();
-                                    qInfo ("[%s:%d] echo %lld bytes", name,
-                                           port, data.size ());
-                                    sock->write (data);
-                                  });
+#include "EchoServer.h"
 
-              QObject::connect (sock, &QTcpSocket::disconnected, sock,
-                                [=] ()
-                                  {
-                                    qInfo ("[%s:%d] client disconnected", name,
-                                           port);
-                                    sock->deleteLater ();
-                                  });
-            }
-        });
-
-  if (!server->listen (QHostAddress::Any, port))
-    {
-      qCritical ("Failed to listen on %s port %d: %s", name, port,
-                 qPrintable (server->errorString ()));
-    }
-  else
-    {
-      qInfo ("Listening on %s port %d", name, port);
-    }
-
-  return server;
-}
+#include <QCoreApplication>
 
 int
 main (int argc, char *argv[])
 {
   QCoreApplication app (argc, argv);
 
-  listenOn (9110, "Command", &app);
-  listenOn (9111, "Imaging", &app);
-  listenOn (9112, "Status", &app);
+  new EchoServer (9110, "Command", &app);
+  new EchoServer (9111, "Imaging", &app);
+  new EchoServer (9112, "Status", &app);
 
   return app.exec ();
 }