chore: Smoke tests for tutorial code

[toby-coleman]

Summary

Closes #108 by testing that all of the tutorials run without errors.

Changes

• Adds smoke test to run all of the .py files in the examples/tutorials folder.
• Adds smoke test stage to CI.

[gemini-code-assist]

Summary of Changes

Hello @toby-coleman, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a robust automated testing mechanism to ensure the reliability and correctness of the project's tutorial examples. By setting up smoke tests that execute each tutorial script, it proactively identifies any regressions or issues that might prevent users from successfully running the provided code, thereby improving the overall quality and maintainability of the examples.

Highlights

• Automated Tutorial Testing: New smoke tests have been implemented to automatically execute all Python tutorial files located in the examples/tutorials directory, ensuring they run without errors.
• CI Integration: The newly added smoke tests are intended to be integrated into the Continuous Integration (CI) pipeline, adding an automated stage to validate tutorial code on every change.
• Pytest Marker: A new smoke marker has been defined in pyproject.toml under [tool.pytest.ini_options], allowing for selective execution or exclusion of these specific tests.

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[gemini-code-assist]

Code Review

This pull request adds valuable smoke tests for the tutorials. My feedback focuses on improving code maintainability by removing a redundant fixture and consolidating repeated path calculations into a single constant. These changes will make the new test code cleaner and easier to manage.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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