Adopting prek over pre-commit, setup-uv's python-version

[jamesbraza]

This PR upgrades our developer tooling:

• Modernizes our setup-uv parameters
  • UV_PROJECT_ENVIRONMENT --> activate-environment parameter
  • uv python pin --> python-version parameter
• Having pre-commit config use uv-managed venv for mypy, decoupling from local venv
• Moves from pre-commit to its Rust port prek for speed (and 🌲)

[Copilot]

Pull Request Overview

This PR modernizes the developer tooling by transitioning from pre-commit to prek (a faster Rust implementation) and updating setup-uv configuration to use newer parameter names. The changes aim to improve developer experience through faster pre-commit hooks and simplified CI configuration.

• Replaces pre-commit dependency with prek for improved performance
• Updates GitHub Actions to use modern setup-uv parameters (python-version and activate-environment)
• Configures mypy to use uv-managed environment with --frozen flag to prevent local venv mutations

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
pyproject.toml	Replaces pre-commit dependency with prek
.pre-commit-config.yaml	Updates mypy hook to use uv-managed environment and excludes uv.lock from checks
.github/workflows/tests.yml	Modernizes setup-uv configuration and switches to prek-action

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[dosubot]

Related Documentation

Checked 1 published document(s). No updates required.

^{How did I do? Any feedback?}  

[jamesbraza]

This UV_PROJECT_ENVIRONMENT tricked uv into installing into system Python.

Using activate-environment from setup-uv eliminates the need for this complexity

[jamesbraza]

We avoid this by just specifying the Python version to setup-uv directly

[dosubot]

Documentation Updates

Checked 1 published document(s). No updates required.

^{How did I do? Any feedback?}