What is your plan if/when a trademark dispute arises? I was never a trademark lawyer, but based on what I know from my adjacent practice, this seems very likely to occur.
If you're going up against MS, I'm sure they'll insist on it!
In all seriousness though, you could end up being liable for diluting their trademark, and if you aren't set up in a corporation, the liability could hit you personally.
I'm not a lawyer anymore, but this is the sort of thing that sets off all kinds of alarms in my head. This looks like a cool project, and it would be unfortunate if it got mired down in legal controversy — especially if that was totally avoidable.
Thank you for the advice, gnicholas! And no, I have absolutely no intention to be in MS's way with their Copilot. If necessary, I will do a rebranding as soon as possible.