Qt6 API fixes: QJsonObject and QJsonDocument serialization

- training_area_telegrams.cpp:3168: Fixed QJsonObject initializer list syntax
  - Changed QJsonObject({{...}}) to QJsonObject{{...}} (double braces)
  - Changed header.toJson() to header().toJson() (method call)

- track_content_widget.cpp:37,51: Fixed QJsonDocument serialization
  - Replaced toBinaryData() with toJson(QJsonDocument::Compact)
  - Replaced fromBinaryData() with fromJson()
  - Qt6 removed binary serialization methods

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

qt6-after/qt6-migrated-legatus/Lts/Common/LtsScriptTimeline/track_content_widget.cpp

@@ -34,7 +34,7 @@ namespace LtsScriptTimeline
 
 QDataStream& operator<<(QDataStream& ds, const TrackEntry& te)
 {
-    const QByteArray jsonContent = QJsonDocument(te.m_detailData).toBinaryData();
+    const QByteArray jsonContent = QJsonDocument(te.m_detailData).toJson(QJsonDocument::Compact);
     ds << te.m_topicId << te.m_startTime << te.m_length << static_cast<quint8>(te.m_type) << te.isSet << te.index
        << jsonContent << te.x << te.y << te.h << te.w << te.m_channelName << te.m_description;
     return ds;
@@ -48,7 +48,7 @@ QDataStream& operator>>(QDataStream& ds, TrackEntry& te)
         te.y >> te.h >> te.w >> te.m_channelName >> te.m_description;
 
     te.m_type = static_cast<TrackEntryType>(type);
-    te.m_detailData = QJsonDocument::fromBinaryData(jsonContent).object();
+    te.m_detailData = QJsonDocument::fromJson(jsonContent).object();
     return ds;
 }
 

qt6-after/qt6-migrated-legatus/Lts/Proxies/TrainingAreaBase/training_area_telegrams.cpp

@@ -3165,14 +3165,14 @@ BatteryAlarm BatteryAlarm::fromJson(const QJsonObject &obj)
 
 QJsonObject BatteryAlarm::toJson() const
 {
-  return QJsonObject({{QStringLiteral("header"), header.toJson()},
+  return QJsonObject{{QStringLiteral("header"), header().toJson()},
                       {QStringLiteral("id"), id},
                       {QStringLiteral("description"), description},
                       {QStringLiteral("acknowledge"), acknowledge},
                       {QStringLiteral("condition"), condition},
                       {QStringLiteral("uniqueAlarmNumber"), uniqueAlarmNumber},
                       {QStringLiteral("alarmTime"), alarmTime}
-                     });
+                     };
 }
 
 ServiceControl ServiceControl::fromJson(const QJsonObject &obj)