This extension was part of Blender 4.1 bundled add-ons. It is now offered as it is, with limited supported.
No changelog for this release.
This extension does not require special permissions.
Seems to be great. Trying it now on Blender 4.4.3.. one thing I noticed is that the colors don't seem to work anymore. Either with this version or the older one. I tried with version 1.8.2 and it works properly in Blender 4.2.
No need to look any further ! With this addon, retopology becomes much easier.