Method buildMqttPublishingSection

app/src/DataModel/ProjectEditor.cpp:2054–2146

* @brief Appends the Publishing section (master toggle, mode, rate, topic, notifications). */

 * @brief Appends the Publishing section (master toggle, mode, rate, topic, notifications).
 */
void DataModel::ProjectEditor::buildMqttPublishingSection(const MQTT::Publisher& pub, bool enabled)
{
  auto* pubHdr = new QStandardItem();
  pubHdr->setData(SectionHeader, WidgetType);
  pubHdr->setData(tr("Publishing"), PlaceholderValue);
  pubHdr->setData("qrc:/icons/project-editor/model/mqtt-publishing.svg", ParameterIcon);
  m_mqttPublisherModel->appendRow(pubHdr);

  auto* enabledItem = new QStandardItem();
  enabledItem->setEditable(true);
  enabledItem->setData(true, Active);
  enabledItem->setData(CheckBox, WidgetType);
  enabledItem->setData(enabled, EditableValue);
  enabledItem->setData(kMqttPublisher_Enabled, ParameterType);
  enabledItem->setData(tr("Enable Publishing"), ParameterName);
  enabledItem->setData(tr("Broadcast frames, raw bytes and notifications to the broker"),
                       ParameterDescription);
  m_mqttPublisherModel->appendRow(enabledItem);

  auto* modeItem = new QStandardItem();
  modeItem->setEditable(true);
  modeItem->setData(enabled, Active);
  modeItem->setData(ComboBox, WidgetType);
  modeItem->setData(pub.modes(), ComboBoxData);
  modeItem->setData(pub.mode(), EditableValue);
  modeItem->setData(kMqttPublisher_Mode, ParameterType);
  modeItem->setData(tr("Payload"), ParameterName);
  modeItem->setData(tr("Selects what gets published: parsed dashboard data or raw RX bytes"),
                    ParameterDescription);
  m_mqttPublisherModel->appendRow(modeItem);

  auto* freqItem = new QStandardItem();
  freqItem->setEditable(true);
  freqItem->setData(enabled, Active);
  freqItem->setData(IntField, WidgetType);
  freqItem->setData(pub.publishFrequency(), EditableValue);
  freqItem->setData(kMqttPublisher_PublishFrequency, ParameterType);
  freqItem->setData(tr("Publish Rate (Hz)"), ParameterName);
  freqItem->setData(tr("How many times per second to publish (1-30 Hz). Higher rates increase "
                       "broker load; dashboard data is rate-limited so a slow broker never blocks "
                       "frame parsing."),
                    ParameterDescription);
  m_mqttPublisherModel->appendRow(freqItem);

  auto* topicItem = new QStandardItem();
  topicItem->setEditable(true);
  topicItem->setData(enabled, Active);
  topicItem->setData(TextField, WidgetType);
  topicItem->setData(pub.topicBase(), EditableValue);
  topicItem->setData(kMqttPublisher_TopicBase, ParameterType);
  topicItem->setData(tr("Topic Base"), ParameterName);
  topicItem->setData(tr("serial-studio/device"), PlaceholderValue);
  topicItem->setData(tr("Base topic used for frame and raw-byte publishing"), ParameterDescription);
  m_mqttPublisherModel->appendRow(topicItem);

  if (pub.mode() == static_cast<int>(MQTT::Publisher::Mode::ScriptDriven)) {
    auto* scriptTopicItem = new QStandardItem();
    scriptTopicItem->setEditable(true);