Qt6 Migration: Complete migration with DDS/RTI support and build validation

Major Changes:
- Merged latest Qt5 devel content from dlbo (292 files changed, 7 new dirs)
- Consolidated forward-declarations and include folders
- Removed unneeded modules per Niklas' repo check list

Build System Fixes:
- Fixed CMake VERSION_GREATER syntax in ParticipantManagement/CMakeLists.txt
- Added VLC packages (libvlc-dev, vlc-plugin-base) to docker_build.sh
- Added PostgreSQL dev packages (libpq-dev, postgresql-server-dev-all) to Dockerfile
- Fixed locale warnings (ANSI_X3.4-1968 → C.UTF-8)
- Fixed ArcGIS SDK path warnings when BUILD_ARCGIS=OFF

Code Generation Fixes:
- Fixed IDL enum collisions (PortType→CorePortType/DdsutPortType, PdmEventType)
- Fixed Grantlee template svc_translation.cpp.grantlee:
  - Changed {{ idl_enum.name }}_def:: to {{ idl_enum.name }}::
  - Fixed .underlying() calls for C++11 scoped enums (enum class)
- Removed generated files from repo (moc_*, *_dtc.h, *_ftc.h)

Validation:
- BUILD_RTI=ON: SUCCESS
- BUILD_RTI=OFF: SUCCESS
- C++17 standard maintained for RTI 7.7 compatibility
- Ubuntu 26.04 Docker environment verified

Remaining Warnings (expected):
- BgViewer, KDChart, KDReports, Poppler-Qt6 not found (optional features)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qt5-before/dlbo/Lts/Proxies/WirelessLocationSystem/wls_participant_handler.cpp

@@ -0,0 +1,116 @@
+/**
+  * Handle Participants which are available in the system (map between Wls id and ParticipantId)
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Christian Ehrlicher, SLSE, 2017-01-10
+  */
+
+#include "wls_participant_handler.h"
+#include "web_socket_handler.h"
+#include "wls_handler.h"
+
+#include <QDateTime>
+
+namespace WirelessLocationSystem
+{
+WlsParticipantHandler::WlsParticipantHandler(QObject *parent)
+  : QObject(parent)
+  , m_gpsOnOffTimeoutTimer(new QTimer(this))
+  , m_logger(getLogger("WlsParticipantHandler"))
+{
+  connect(m_gpsOnOffTimeoutTimer, &QTimer::timeout, this, &WlsParticipantHandler::onGpsOnOffTimeoutTimer);
+  m_gpsOnOffTimeoutTimer->setSingleShot(false);
+  m_gpsOnOffTimeoutTimer->start(1000);
+}
+
+WlsParticipantHandler::~WlsParticipantHandler()
+{
+  qDeleteAll(m_participantsByEqId);
+}
+
+void WlsParticipantHandler::init(WebSocketHandler *wsHandler,
+                                 WlsHandler *wlsHandler)
+{
+  m_wsHandler = wsHandler;
+  m_wlsHandler = wlsHandler;
+}
+
+WlsParticipant *WlsParticipantHandler::createNewParticipant(const QByteArray &tagId)
+{
+  delete m_participantsByTagId.take(tagId);
+  WlsParticipant *p = new WlsParticipant;
+  connect(p, &WlsParticipant::gpsOnOffChanged,
+          m_wlsHandler, &WlsHandler::sendGpsMode);
+  connect(p, &WlsParticipant::dataForWls,
+          m_wlsHandler, QOverload<const WlsParticipant *,const SfmMessage_tx &>::of(&WlsHandler::sendWlsMessage));
+  connect(p, &WlsParticipant::gpsOnOffChanged,
+          m_wsHandler, &WebSocketHandler::sendGpsPositionUsage);
+  connect(p, &WlsParticipant::positionChanged,
+          m_wsHandler, &WebSocketHandler::sendPosition);
+  connect(p, &WlsParticipant::wlsBinarySfmDataComplete,
+          m_wsHandler, &WebSocketHandler::sendBinarySfmData);
+  connect(p, &WlsParticipant::dataCommunicationStateChanged,
+          m_wsHandler, &WebSocketHandler::sendDataCommunicationState);
+
+  p->m_tagId = tagId;
+  m_participantsByTagId[tagId] = p;
+  return p;
+}
+
+void WlsParticipantHandler::setEquipmentNumber(WlsParticipant *participant, int equipmentNumber)
+{
+  participant->setExerciseId(m_equipNo2ExerciseId.value(equipmentNumber));
+
+  auto it = m_participantsByEqId.find(participant->equipmentNumber());
+  // remove old assignment
+  if (it != m_participantsByEqId.end())
+    m_participantsByEqId.erase(it);
+
+  participant->setEquipmentNumber(equipmentNumber);
+  m_participantsByEqId[equipmentNumber] = participant;
+}
+
+WlsParticipant *WlsParticipantHandler::participantByTagId(const QByteArray &tagId) const
+{
+  return m_participantsByTagId.value(tagId);
+}
+
+void WlsParticipantHandler::exerciseEquipmentAssignmentChanged(const std::unordered_map<int, std::unordered_set<int>> &eea)
+{
+  m_equipNo2ExerciseId.clear();
+  for (const auto &itEx : eea)
+  {
+    const int curExerciseId = itEx.first;
+    const auto &assignment = itEx.second;
+    for (int eqId : assignment)
+    {
+      m_equipNo2ExerciseId[eqId] = curExerciseId;
+      WlsParticipant *p = m_participantsByEqId.value(eqId);
+      if (!p)
+        continue;
+      p->setExerciseId(curExerciseId);
+    }
+  }
+}
+
+void WlsParticipantHandler::handleWlsBinarySfmData(const TrainingAreaBase::TetraIcd::WlsBinarySfmData &data)
+{
+  WlsParticipant *p = m_participantsByEqId.value(data.header.equipmentNumber);
+  if (!p)
+  {
+    WARNING_LOG(m_logger) << "Got binary sfm data for participant with eqId " << data.header.equipmentNumber
+                          << " but could not find this participant!";
+    return;
+  }
+  p->sendBinarySfmData(data.payload);
+}
+
+void WlsParticipantHandler::onGpsOnOffTimeoutTimer()
+{
+  const qint64 tNow = QDateTime::currentMSecsSinceEpoch();
+  for (WlsParticipant *p : qAsConst(m_participantsByTagId))
+    p->checkGpsOnOffTimeoutTimer(tNow);
+}
+
+} // namespace WirelessLocationSystem