sorry to sound extremely daft, but what should I be renaming it? Is there a preferred name or one which makes most sense?

once a new name is picked can it later be changed back to magicmirror just to keep everything standard?

Also, when you say,
mv magicmirror newname, I’m guessing the newname bit is actually what I want to call it, or do I put the new name after?
I’ve got a terrible feeling I’ll have to start the whole thing again which I definitely won’t look forward to.

Sam, scratch my last message, I was just about to turn everything off as it’s getting pretty late here.
used ctrl c to stop the MM so I could shutdown the pi and attack it another day.
pm2 restarted the MM and hey presto the mirror seems by and large back to normal.

I’m away with work for the next 3 days but will have a proper butchers (look) when I’m back home.

Thank you so much for both your patience and help.
I had genuine fears I’d have to start the entire build (modules bit) again and I was lucky I got it up and running like I did in the first place.

thank you!