COLMAP imports have incorrect orientation - coordinate system mismatch with Blender

[Supermagnum]

COLMAP reconstructions imported using this addon consistently have incorrect orientation relative to Blender's coordinate system. The specific rotation issues depend on the import method:
Normal imports (point cloud/mesh):

Data is rotated 90 degrees incorrectly around the X axis
Attempting manual correction with R X -90 causes the points to disappear

Geometry Nodes imports:

Data appears upside down relative to Blender's Z-up coordinate system

Steps to Reproduce:

Import a COLMAP reconstruction using either standard import or Geometry Nodes import
View the imported data in Blender's 3D viewport
Observe incorrect orientation

Expected Behavior:
The imported COLMAP data should be automatically transformed to align with Blender's Z-up coordinate system, or there should be clear import options to control the coordinate system conversion.
Current Issues with Manual Correction:

Standard imports: Rotating 90° on X axis causes points to disappear instead of correcting orientation
Geometry Nodes imports: Requires manual Transform Geometry node with rotation correction

Suggested Solutions:

Add coordinate system transformation during import to automatically convert from COLMAP's coordinate convention to Blender's Z-up system.
Import options: Provide explicit coordinate system/axis mapping controls in the import dialog.
Documentation: At minimum, clearly document this issue and the required, working manual correction method in the README or wiki.