Interesting thing I noticed was the word “magine” without the I at the start. Which felt quite human but… dunno
Smiles in Emacs, where I do the majority of my writing and don't have any form of spellcheck set up.
I will say though... Claude is shockingly good at writing elisp. If I can't find a plugin that does something I want, it usually only takes a few turns to get exactly what I was looking for, and I learn a bunch of elisp along the way.