Update CoC, add no-AI, update contribution documentation

CONTRIBUTING.md

@@ -6,34 +6,50 @@ a set of guidelines to help you contribute to this project.
 
 ## Code of Conduct
 
-By participating in this project, you are expected to uphold our [Code of
-Conduct][code_of_conduct].
+> Creative Commons (CC) is an organization and global community that champions
+> openness, sharing, and creativity. We are committed to fostering a safe,
+> inclusive, respectful, and harassment-free environment for
+> everyone—regardless of age, ability, disability status, ethnicity, gender
+> identity and expression, level of experience, nationality, personal
+> appearance, race, religion, or sexual identity and orientation.
 
-[code_of_conduct]: https://opensource.creativecommons.org/community/code-of-conduct/
+All Creative Commons open source projects are governed by our [Code of
+Conduct - Creative Commons][coc].
 
+[coc]: https://creativecommons.org/code-of-conduct/
 
-## Project Documentation
 
-The `README` in the root of the repository should contain or link to project
-documentation. If you cannot find the documentation you're looking for, please
-file a GitHub issue with details of what you'd like to see documented.
+## AI generated content prohibited
 
-## Contribution Workflow
+<!--
+This section must match the same section in:
+  creativecommons/ccos-website-source: content/contributing-code/contents.lr
+-->
 
-Once you have identified an issue to work on:
+[Avoiding generative AI development tools — Creative Commons Open
+Source][no-ai]:
+> At this time, the Creative Commons (CC) **Technology team** has concluded
+> that generative AI development tooling does not pass a cost/benefit analysis
+> *for contributing to our open source projects*. Until further notice, we will
+> not accept CC Open Source submissions that include code or content generated
+> with AI.
 
-* [Fork](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/fork-a-repo) the Repository. 
-* Work in a [new branch](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/creating-and-deleting-branches-within-your-repository).
-* Open a [Pull Request (PR)](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/creating-a-pull-request) and follow the PR template.
+[no-ai]: https://opensource.creativecommons.org/blog/entries/2025-12-01-avoiding-gen-ai-tools/
 
-For additional guidelines, refer to the [Foundational technologies — Creative Commons Open Source](https://opensource.creativecommons.org/contributing-code/foundational-tech/).
 
 ## How to Contribute
 
-Please follow the processes in our general [Contributing Code][contributing]
-guidelines on the Creative Common Open Source website.
+Please follow the processes in our [Contribution Guidelines — Creative Commons
+Open Source][contrib].
+
+[contrib]: https://opensource.creativecommons.org/contributing-code/
+
 
-[contributing]: https://opensource.creativecommons.org/contributing-code/
+## Project Documentation
+
+The `README` in the root of the repository should contain or link to project
+documentation. If you cannot find the documentation you're looking for, please
+file a GitHub issue with details of what you'd like to see documented.
 
 
 ## Questions or Thoughts?