She’s clearly having fun, running around in circles, chewing sticks, and finding and eating cat poop. And I don’t want to discourage her from having fun when I take her outside (except for the cat poop thing – that needs to stop).
But she seems to have the idea that jumping up and biting my wrists or my ankles is a fun game that we both enjoy, and she seems to be getting more agressive about it.
My understanding is that they learn how to play as puppies as they would get feedback. So you may consider exaggerating when it hurts to better highlight the pain. Alternatively, another puppy to play with.
That was what I was going to say as well.
They usually learn to stop by interacting with their litter mates.