After some confusion, I am here noting my solution to pypi’s token security issue.
I began using uv out of curiosity but it is nice tbh.
Anyway, to publish changes to emsuite, I ran into 403 security issues with pypi.
The solution was to add the token to the .zshrc as export UV_PUBLISH_TOKEN="pypi-XXXXXXXXXXXXXXXXX" and source.
Running uv vuild && uv publish worked smoothly.