Use pytest-beartype-tests plugin

[adamtheturtle]

This PR adds the pytest-beartype-tests dev dependency and removes redundant pytest_collection_modifyitems wiring from conftest where it duplicated the plugin.

The dependency is pinned to git bc81d99 via [tool.uv.sources] until a PyPI release includes the Sybil-safe plugin fix.

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Note

Medium Risk
Low impact on production code, but it changes the test collection/runtime behavior and introduces a git-pinned pytest plugin dependency, which could affect CI stability and reproducibility.

Overview
Shifts beartype enforcement for tests from a custom pytest_collection_modifyitems hook in conftest.py to the external pytest-beartype-tests plugin (removing the redundant collection-time wrapping).

Adds pytest-beartype-tests to dev dependencies and configures uv to install it from a specific git revision (bc81d99), plus introduces an empty [dependency-groups]/dev group entry in pyproject.toml.

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Empty dependency-groups dev shadows optional-dependencies dev

Low Severity

The newly added [dependency-groups] section with dev = [] is empty and serves no apparent purpose. All CI workflows use uv run --extra=dev, which references optional-dependencies.dev. This empty group creates a trap: a future developer running uv sync --group dev would get zero dependencies installed instead of the full dev set. The PR description doesn't mention this addition, suggesting it may be unintentional.

 

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