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/Services/TargetManagement/main_handler.cpp

@@ -0,0 +1,154 @@
+/**
+  * MainHandler for AssetManagement
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#include "main_handler.h"
+
+#include <DDS/DDSConnector/dds_connector.h>
+#include <DDS/Core/pacemaker.h>
+
+#include <ngldb/db_service_handler.h>
+#include "settings.h"
+
+#include <QFileInfo>
+
+namespace TargetManagement
+{
+
+MainHandler::MainHandler(QObject *parent)
+  : QObject(parent)
+  , m_ddsHandler(nullptr)
+  , m_dbHandler(nullptr)
+  , m_logger(getLogger("MainHandler"))
+{}
+
+MainHandler::~MainHandler()
+{
+  m_handlerTargetConfig.reset();
+
+  // Land400 :
+  m_shootbackController.reset();
+  m_elevationMap.reset();
+  m_handlerTargetAreaAssignment.reset();
+  m_handlerShootbackArea.reset();
+  m_handlerShootbackTarget.reset();
+  // : Land400
+
+  m_ddsHandler.reset();
+  m_dbHandler.reset();
+}
+
+bool MainHandler::init(int domainId, int exerciseId)
+{
+  INFO_LOG(m_logger) << "MainHandler::init";
+
+  // initialize database
+  m_dbHandler = std::make_shared<DbHandler>();
+  if (!m_dbHandler->init(exerciseId, Settings::settings()))
+    return false;
+
+  // initialize DDS
+  m_ddsHandler = std::make_shared<DdsHandler>(domainId, exerciseId);
+  if (!m_ddsHandler->init())
+  {
+    ERROR_LOG(m_logger) << "Initialisation ddsHandler failed.";
+    return false;
+  }
+  DEBUG_LOG(m_logger) << "Initialisation ddsHandler succesful.";
+
+  NOTICE_LOG(m_logger) << "setNewState Core::RunningState::Starting ";
+  m_ddsHandler->pacemaker()->setNewState(Core::RunningState::Starting);
+
+  // initialize handlerTargetConfig
+  m_handlerTargetConfig = std::make_shared<HandlerTargetConfig>(m_ddsHandler, this);
+
+  if (!m_handlerTargetConfig->init())
+  {
+    ERROR_LOG(m_logger) << "Initialisation HandlerTargetConfig failed.";
+    m_ddsHandler->pacemaker()->setNewState(Core::RunningState::StartingError);
+    return false;
+  }
+
+  if (TargetManagement::Settings::useL400Targets())
+  {
+    //
+    // L400: ElevationMap, ShootbackArea, ShootbackTarget ..
+    // use srtm_38_02.tif for Bremen, until general solution is provided:
+    // loading ElevationMap (async):
+    //
+    // use srtm_38_02.tif for Bremen, until general solution is provided:
+
+    QString elevationFileAbs(QLatin1String("/usr/share/arcgis/resources/elevation/srtm_38_02.tif")); // srtm_38_02.tif -> Bremen
+    QFileInfo fi(elevationFileAbs);
+    if (!fi.exists(elevationFileAbs))
+    {
+      ERROR_LOG(m_logger) << LOGFUNCTION << ", elevationFile '" << elevationFileAbs << "' doesn't exists";
+      return false;
+    }
+
+    m_elevationMap = std::make_shared<SituationMap::ElevationMap>(fi);
+    m_elevationMap->waitForInitialization();  // needs some seconds:
+
+
+    //
+    // initialize handlerShootbackArea
+    m_handlerShootbackArea = std::make_shared<HandlerShootbackArea>(this);
+
+    if (!m_handlerShootbackArea->init())
+    {
+      ERROR_LOG(m_logger) << "Initialisation HandlerShootbackArea failed.";
+      m_ddsHandler->pacemaker()->setNewState(Core::RunningState::StartingError);
+      return false;
+    }
+
+    // initialize handlerShootbackTarget
+    m_handlerShootbackTarget = std::make_shared<HandlerShootbackTarget>(this);
+
+    if (!m_handlerShootbackTarget->init())
+    {
+      ERROR_LOG(m_logger) << "Initialisation HandlerShootbackTarget failed.";
+      m_ddsHandler->pacemaker()->setNewState(Core::RunningState::StartingError);
+      return false;
+    }
+
+    // initialize handlerTargetAreaAssignment
+    m_handlerTargetAreaAssignment = std::make_shared<HandlerTargetAreaAssignment>(this);
+
+    if (!m_handlerTargetAreaAssignment->init())
+    {
+      ERROR_LOG(m_logger) << "Initialisation HandlerTargetAreaAssignment failed.";
+      m_ddsHandler->pacemaker()->setNewState(Core::RunningState::StartingError);
+      return false;
+    }
+
+    // shootbackController
+    m_shootbackController = std::make_shared<ShootbackController>(this);
+    bool initLos = m_shootbackController->initLOS(m_elevationMap.get());
+    bool initDds = m_shootbackController->initDds(m_handlerShootbackArea,
+                                                  m_handlerShootbackTarget,
+                                                  m_handlerTargetAreaAssignment);
+
+    if (!(initLos && initDds))
+    {
+      ERROR_LOG(m_logger) << "Initialisation ShootbackController failed.";
+      m_ddsHandler->pacemaker()->setNewState(Core::RunningState::StartingError);
+      return false;
+    }
+
+  }
+
+  NOTICE_LOG(m_logger) << "setNewState Core::RunningState::Running ";
+  m_ddsHandler->pacemaker()->setNewState(Core::RunningState::Running);
+  return true;
+}
+
+std::shared_ptr<DatabaseInterface> MainHandler::db() const
+{
+  return m_dbHandler->db();
+}
+
+
+}   // namespace TargetManagement