No this is normal programming terminology. Here I am using 'shape' in this sense back in 2021:

https://www.marginalia.nu/log/40-wasted-resources/

and even more similar usage again in 2023 'the shape of the algorithm' (which was post-claude I guess, but this was before I even tested any LLM):

https://www.marginalia.nu/log/87_absurd_success/