[mariajgrimaldi]

Description

Under ADR 0033, course-team roles live in the shared course_team_roles applet because they cut across several contexts, while other applets add the permissions they own through role extensions. course_editor and course_auditor therefore have empty base definitions in #550, since all their current permissions come from course_authoring, and the published JSON Schema rejects that empty list even though the Python validation, compiler, and renderer already accept it.

This PR allows an empty permissions list in role definitions, while add_permissions and remove_permissions in role_extensions stay non-empty, and adds jsonschema as a test dependency to check both rules.

Merge checklist:
Check off if complete or not applicable:

• Documentation updated (not only docstrings)
• Fixup commits are squashed away
• Unit tests added/updated
• Manual testing instructions provided
• Noted any: Concerns, dependencies, migration issues, deadlines, tickets

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[openedx-webhooks]

Thanks for the pull request, @mariajgrimaldi!

This repository is currently maintained by @openedx/committers-openedx-authz.

Once you've gone through the following steps feel free to tag them in a comment and let them know that your changes are ready for engineering review.

🔘 Get product approval

If you haven't already, check this list to see if your contribution needs to go through the product review process.

• If it does, you'll need to submit a product proposal for your contribution, and have it reviewed by the Product Working Group.
  • This process (including the steps you'll need to take) is documented here.
• If it doesn't, simply proceed with the next step.

🔘 Provide context

To help your reviewers and other members of the community understand the purpose and larger context of your changes, feel free to add as much of the following information to the PR description as you can:

• Dependencies

  This PR must be merged before / after / at the same time as ...

• Blockers

  This PR is waiting for OEP-1234 to be accepted.

• Timeline information

  This PR must be merged by XX date because ...

• Partner information

  This is for a course on edx.org.

• Supporting documentation
• Relevant Open edX discussion forum threads

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Where can I find more information?

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• Overview of Review Process for Community Contributions
• Pull Request Status Guide
• Making changes to your pull request

When can I expect my changes to be merged?

Our goal is to get community contributions seen and reviewed as efficiently as possible.

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• The size and impact of the changes that it introduces
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• Maintenance status of the parent repository

💡 As a result it may take up to several weeks or months to complete a review and merge your PR.