Machines installed with addon do not show up on windows 11 OS

After installing the community machines addon on freecad 26.3 and restarting freecad the machines added do not show up in the preferences - cam - assets nor the machine dropdown in the job edit and post processing windows.

I can use the machines by copying the FCM files to the camassets folder without any subfolders, however, this does not allow for any addon updates without the manual copy process

this works, any subfolder organization does not.

Reproduce the issue with the community machines addon on FreeCAD 26.3, then inspect how addon FCM files are discovered under camassets. Compare files placed directly in camassets with files organized in subfolders, and check the Preferences > CAM > Assets and machine dropdown in the job edit and post-processing windows. Done means installed machines appear without manual copying and remain compatible with addon updates.

Written by the indexing model from the issue text.