Refactor scratch folder

[ntno]

Thank you in advance for helping us to improve Terminal for MkDocs
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Description

Describe the purpose of this PR along with any background information and the impacts of the proposed change. For the benefit of the community, please do not assume prior context.

Provide details that support your chosen implementation, including: breaking changes, alternatives considered, changes to the API, etc.

If the UI is being changed, please provide before/after screenshots.

References

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• GitHub Issue/PR number addressed or fixed
• Related pull requests/issues from other repos

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Testing

Describe how this can be tested by reviewers. Be specific about anything not tested and reasons why. If there are existing unit and/or integration test suites, tests should be added for new functionality and existing tests should complete without errors.

Please include any manual steps for testing end-to-end or functionality not covered by unit/integration tests.

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• This change adds test coverage for new/changed/fixed functionality

Checklist

• I have added documentation for new/changed functionality in this PR or in mkdocs-terminal/documentation
• All active GitHub checks for tests, formatting, and security are passing