xelphh/Xelph_VMS ? reverse-engineered prompt

Build me a Windows virtual audio driver that adds a fake speaker and a fake microphone, so anything played into the speaker shows up on the microphone automatically. I want it to work like a hardware free virtual cable for Windows 10 and 11, mainly for Discord, OBS, remote desktop, and audio testing on machines with no real sound hardware.

The speaker should appear as Speakers Xelph, and the mic should appear as Microphone Xelph. If nothing is playing, the mic should just output silence. It should support the usual Windows audio formats and resample if needed, so users can still use it even when the app and Windows settings do not match perfectly. Please include the driver setup files and make it buildable from Visual Studio with the Windows Driver Kit. If helpful, add simple config options to turn loopback off, enable a test tone, or write debug audio to a file.