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/Viewer/LtsDataView/search_model.cpp

@@ -0,0 +1,156 @@
+/**
+  * @RDE_HEADER@
+  * Search Model for TableViews (has the ability to give the user a row for searching data)
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Mike Wille, SLSE, 2016-03-14
+  */
+
+#include "search_model.h"
+
+#include <QFont>
+#include <QGuiApplication>
+#include <QIcon>
+#include <QPalette>
+#include <LtsWidgets/lts_column_filter_proxy_model.h>
+
+namespace LtsDataView
+{
+SearchModel::SearchModel(QObject *parent)
+  : QAbstractItemModel(parent)
+  , m_searchIcon(QIcon(QStringLiteral("icon:show.svg")))
+{
+}
+
+int SearchModel::columnCount(const QModelIndex &parent) const
+{
+  if (parent.isValid()) return 0;
+  if (!m_sourceModel) return 0;
+  // no parent here - the given model index has nothing to do with the source model
+  return m_sourceModel->columnCount(QModelIndex());
+}
+
+
+int SearchModel::rowCount(const QModelIndex &parent) const
+{
+  if (parent.isValid()) return 0;
+  if (!m_sourceModel) return 0;
+  return 1; // the search row
+}
+
+
+QVariant SearchModel::data(const QModelIndex &index, int role) const
+{
+  if (!index.isValid())
+    return QVariant();
+
+  switch (role)
+  {
+  case Qt::DisplayRole: // Text
+    return m_displayData.value(index.column());
+  case Qt::EditRole: // Editor Text
+    return m_columnFilters.value(index.column());
+  case Qt::TextColorRole: // Text-Color
+    if (!m_columnFilters.contains(index.column()))
+      return QGuiApplication::palette().color(QPalette::Disabled, QPalette::ButtonText);
+    break;
+  case Qt::DecorationRole:
+    return m_hideDecorationColumns.contains(index.column()) ? QVariant() : m_searchIcon;
+  case Qt::BackgroundRole:
+    return QGuiApplication::palette().color(QPalette::Disabled, QPalette::AlternateBase);
+  case LtsWidgets::LtsColumnFilterProxyModel::ComboboxFilterRole:
+    return m_comboBoxData.value(index.column());
+  default:
+    break;
+  }
+
+  return QVariant();
+}
+
+
+QVariant SearchModel::headerData(int section, Qt::Orientation orientation, int role) const
+{
+  if (orientation == Qt::Horizontal && role == Qt::FontRole)
+  {
+    QFont boldFont;
+    boldFont.setBold(true);
+    return boldFont;
+  }
+
+  return m_sourceModel ? m_sourceModel->headerData(section, orientation, role) : QVariant();
+}
+
+
+bool SearchModel::setData(const QModelIndex &index, const QVariant &value, int role)
+{
+  if (!m_sourceModel || !index.isValid())
+    return false;
+
+  if (role == Qt::EditRole) // add / replace column filter when edited and in search row (row 0)
+  {
+    if (value.isNull())
+      m_columnFilters.remove(index.column());
+    else
+      m_columnFilters[index.column()] = value;
+    emit stringFilterForColumnChanged(value.toString(), index.column());
+    emit signalFilterChanged(); // must be called at last
+    emit dataChanged(index, index, {role});
+    return true; // done! (report a change, so that text keeps showing on search row)
+  }
+  if (role == Qt::DisplayRole)
+  {
+    if (value.isNull())
+      m_displayData.remove(index.column());
+    else
+      m_displayData[index.column()] = value;
+    emit dataChanged(index, index, {role});
+    return true;
+  }
+  if (role == LtsWidgets::LtsColumnFilterProxyModel::ComboboxFilterRole)
+  {
+    if (value.isNull())
+      m_comboBoxData.remove(index.column());
+    else
+      m_comboBoxData[index.column()] = value;
+    emit dataFilterForColumnChanged(value, index.column());
+    emit signalFilterChanged(); // must be called at last
+    emit dataChanged(index, index, {role});
+    return true;
+  }
+  if (role == Qt::DecorationRole)
+  {
+    if (value.isNull())
+      m_hideDecorationColumns.remove(index.column());
+    else
+      m_hideDecorationColumns.insert(index.column());
+    emit dataChanged(index, index, {role});
+  }
+
+  return false;
+}
+
+
+void SearchModel::setSourceModel(QAbstractItemModel* sourceModel)
+{
+  m_sourceModel = sourceModel;
+  m_columnFilters.clear();
+
+  emit dataChanged(QModelIndex(), QModelIndex()); // update view
+}
+
+
+Qt::ItemFlags SearchModel::flags(const QModelIndex &index) const
+{
+  Q_UNUSED(index);
+  return Qt::ItemIsEnabled | Qt::ItemIsEditable | Qt::ItemIsSelectable;
+}
+
+
+QModelIndex SearchModel::index(int row, int column, const QModelIndex &parent) const
+{
+  if (parent.isValid())
+    return QModelIndex();
+  return createIndex(row, column);
+}
+} // namespace LtsDataView