internalEndAnnotationDrag method

Implementation

void internalEndAnnotationDrag() {
  // Notify all selected annotations that drag is ending
  for (final id in _selectedAnnotationIds) {
    _annotations[id]?.onDragEnd();
  }

  runInAction(() {
    _draggedAnnotationId.value = null;
    _lastPointerPosition.value = null;
    _annotationCursor.value = SystemMouseCursors.basic;

    // Pan state is managed centrally by NodeFlowEditor's _updatePanState reaction

    // Safety reset: ensure flag is cleared when drag ends
    if (_isMovingGroupNodes) {
      _isMovingGroupNodes = false;
    }
  });
  // Note: Spatial index update is handled by MobX reaction in _setupSpatialIndexReactions()
  // which fires when draggedAnnotationId becomes null
}