Evidence

CI verified

• Ruff is pinned to 0.13.3 in pyproject.toml, .pre-commit-config.yaml, and .github/workflows/ci.yml.

hardware verified

• Not verified for this change; it only updates lint/tooling metadata and docs.

planned

• Reviewers can run pre-commit run -a, the local Ruff command from docs/software/ci_cd.md, and the existing docs build.