uv.lock was originally resolved with the workstation's globally-configured
dexterenergy private artifact registry as the default index, baking that
URL into every `source = { registry = ... }` entry. Inside Docker that
401s.
- pyproject.toml: declare https://pypi.org/simple as the project's
default uv index (overrideable, but pins intent)
- uv.lock: regenerated with UV_DEFAULT_INDEX=https://pypi.org/simple and
no UV_INDEX so every source now points at public PyPI
Reproduce: `UV_DEFAULT_INDEX=https://pypi.org/simple UV_INDEX= uv lock`
