Function ringSnapshotKey

app/src/UI/Dashboard.cpp:91–94

* @brief Composite snapshot key: dataset uniqueIds repeat across sources, so the time-ring * snapshot must include the sourceId or two plots collapse onto one entry and the second * restore move-assigns a moved-from (null-buffer) ring, crashing appendDecimated. */

 *        restore move-assigns a moved-from (null-buffer) ring, crashing appendDecimated.
 */
static qint64 ringSnapshotKey(const int sourceId, const int uniqueId)
{
  return (static_cast<qint64>(sourceId) << 32) | static_cast<quint32>(uniqueId);
}

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// File-local helpers