Where there’s a will, there’s a way.
I guess I’ve reached feature demonstration: the compiled file actually runs on the target hardware and provides the expected end result…
YES. IT WORKS ON THE TARGET BOARD! 
At the moment, I’m cobbling together the “OpenOCD upload” command based on some examples here…and manually running it in Terminal. Next I need to find some PlatformIO framework examples utilizing OpenOCD, and get this all working the proper way…
Unfortunately, we will have to use the OpenNuvoton OpenOCD version. Oh well.