This is the intended branch for any new submodule-based monorepo, "VI."

if we use the action, it makes its own `.venv` 😱

for example, the rye dev deps now include those in CI, but the
noraml dependencies are unchanged! :)

make all needed changes to codebase for CI to pass!

these seem to be hard for people, so i decided to document it real
quick. rye uses the `src/` directory to make use of pip's editable
installs.

feel free to remove if it's unhelpful!