- Changed QList<Field>() to {} for Field type compatibility
- Updated signal connection from jobStatusChanged to statusChanged
- Changed addFeature() to addFeatureAsync() with QFutureWatcher pattern
- Removed ACRGIS_VERSION guards (Qt6/SDK v300 only)
- Added QFutureWatcher<void> m_addFeatureWatcher member to header
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>