[paddyroddy]

Description

I noticed when doing #1254 that we were getting very slow in the linting workflow. This PR splits up some of the work.

• Caching prek
• By using --no-sync we make sure we actually reuse the environments
• noxfile.py is now behaving as it should have been
  * Removed benchmarks from type checking

Linting has gone from timing out, to 7 minutes, to less than a minute.

Closes: #1264

Checks

• Is your code passing linting?
• Is your code passing tests?
• Have you added additional tests (if required)?
• Have you modified/extended the documentation (if required)?
• Have you added a one-liner changelog entry above (if required)?

[Copilot]

🟢 Approval recommended

The workflow and session changes are focused, with no unresolved blocking findings.

0 open findings

What changed in this PR

Speeds up GLASS automation by reducing dependency synchronization and caching linting environments.

Changes:

• Adds prek caching and uses uv run --no-sync across workflows.
• Makes Nox session Python versions explicit.
• Narrows the documented contributor dependency installation.

File	Description
noxfile.py	Defines explicit Python versions for sessions.
CONTRIBUTING.md	Updates dependency installation guidance.
.github/​workflows/​test.yaml	Skips synchronization and updates backend-test session selection.
.github/​workflows/​run-examples.yaml	Skips synchronization when running examples.
.github/​workflows/​regression-test.yaml	Skips synchronization for regression tests.
.github/​workflows/​linting.yaml	Caches prek environments and enables verbose output.
.github/​workflows/​documentation.yaml	Skips synchronization when building documentation.

🧠 Review effort: Balanced

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[paddyroddy]

@connoraird I've pushed 862d4b3 to fix linting on main.