It looks like the author (Philippe Renon = filnet) last logged on to the forum many months ago and at that time he had recently finished the initial version of the nice "video in a GCS window (in next version)" project. It looks like he has taken some time off.
Since I am mainly a firmware developer, I also use a non-IDE development environment, bash and a standard text editor. The last time I used more was when making changes to GCS.
I suspect that this is not a high priority since the main reason anyone needs the command line version is for hardware not supported by the GCS, and that is basically just the OpenPilot Platinum GPS. Also to consolidate the apparently duplicate code.
I recall that the command line firmware flash tool (OPUploadTool) would not build/run correctly in Windows (I don't know if this is fixed), but you are using Linux. I wasn't aware of a problem with the Linux version, but I haven't used it in a couple years. Is there a problem with the Linux version of OPUploadTool?