Switch from pre-commit to prek

[adamtheturtle]

Replace pre-commit with prek for running hooks.

---

Note

Migrates repository hook runner from pre-commit to prek.

• CI: Lint step in .github/workflows/ci.yml now runs uv run --extra=dev prek run ... for all hook stages
• Docs: docs/source/contributing.rst updated to install and run hooks via prek
• Dev deps: swap pre-commit for prek in pyproject.toml
• Config: .pre-commit-config.yaml default_install_hook_types now [pre-commit, pre-push] (drops commit-msg)

^{Written by Cursor Bugbot for commit 41240c8. This will update automatically on new commits. Configure here.}