I am planning to purchase Lightburn and tried to find a way to upload directly from Lightburn to OctoPrint, like for example with Prusa Slicer, or in case of Lightburn GRBL network or LightBurn Bridge. However, after consuming the manual and many forum threads here it is not entirely clear to me if there is a build in upload function in Lighburn that will upload finished gcode to OctoPrint?
No, it’s not available, I think. You can just save gcode manually. I suggest using either a shared folder (mount the OctoPrint data folder into your LB host OS and directly store the files there) or using a script that monitors a local folder and syncs it with the remote OctoPrint folder.
There are some basic command line options for LB, so you might be able to automate this process as well. I never digged deeper into that.