No. Deluxe makes massive changes to the code, making them incompatible. Some QoL features may be ported over (such as borderless acre transitions and true unlocked framerate) with Cuyler's permission or by Cuyler himself, but a one-to-one port is not planned.
If you don't know what deluxe mod is, and you're looking for a different Animal Crossing experience, I highly recommend checking out the Deluxe mod.
While anyone can make mods by modifying the decompilation source code directly, I'll look into making a proper mod loader after the 1.0 release. No promises!
Not planned. Putting aside the amount of work needed to include multiplayer, the original game was never designed with network security in mind. Adding online play onto that would be a likely security nightmare.
The Windows binary runs under Proton/Wine and seems to work fine from what I've heard. Native Linux is not officially supported yet, hopefully will happen in the future.
No. AI can't write a functional PC port by itself. There were many issues that current AI's aren't good enough to solve by themselves. AI was used as a tool to speed up development. The AI usage disclaimer is there for transparency.
This started out as a hobby project I had no intention of sharing with anyone, so my local repository contains assets from the game. I made a new repository just to upload it to github. Sharing the original could result in this project getting taken down.