No we do not have any plans to get the specific brake booster from Nissan working, there are other ibooster solutions that are reverse engineered already.

No we do not have any plans to specifically integrate it

I am not sure if the compressor has HVB+ and HVB- going to it all the time. or if it has some contactors in the PDM that turn on with LIN control as well. have to pull the PDM open and see... I do know that the PTC heater has HVB+ and HVB- whenever the Main contactors are closed. so probably the same with the A/C compressor.

https://youtu.be/UUJ39insil8?si=PpqafXFTMmcKKU7M

This is what came with my purchase, I have no idea what this little plastic piece is for.