Add CLA workflow

[glenn-jocher]

Summary

• add the canonical public CLA workflow with the standard Ultralytics license header
• use ultralytics/actions/cla@main so repositories inherit shared fixes automatically
• route actionable events at the job boundary and grant only actions: write and pull-requests: write
• keep the ledger PAT isolated to the CLA step and central ultralytics/cla repository

Deleted: nothing. No CLA workflow or repository-local equivalent existed; organization-wide CLA enforcement cannot be achieved by deletion or relocation in this repository.

Reused: the canonical ultralytics/actions/.github/workflows/cla.yml structure and shared ultralytics/actions/cla@main implementation.

Validation

• byte-for-byte comparison with the reviewed ultralytics/actions/.github/workflows/cla.yml template
• actionlint .github/workflows/cla.yml
• npx prettier --write .github/workflows/cla.yml
• license-header, shared-main-action, and token-input scan
• git diff --check

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Adds an automated Contributor License Agreement (CLA) workflow to manage contributor approvals for pull requests. 📝

📊 Key Changes

• Introduces a new .github/workflows/cla.yml GitHub Actions workflow.
• Automatically checks CLA status when pull requests are opened, reopened, or updated.
• Allows contributors to trigger a recheck by commenting recheck or confirm agreement with the required CLA statement.
• Uses the shared ultralytics/actions/cla@main action to process CLA signatures.
• Adds write permissions for pull request and workflow actions, with concurrency controls to prevent duplicate checks.

🎯 Purpose & Impact

• Ensures contributors accept the Ultralytics CLA before their pull requests can be merged. ✅
• Reduces manual CLA verification and streamlines contribution management.
• Provides a consistent, automated process for new and updated pull requests.
• May require contributors to sign the CLA or follow the workflow’s comment instructions before their contributions are accepted.

[UltralyticsAssistant]

👋 Hello @glenn-jocher, thank you for submitting a ultralytics/pre-commit 🚀 PR! This automated checklist helps ensure a seamless integration; an Ultralytics engineer will assist with any questions or follow-up needed.

• ✅ Define a Purpose: Clearly explain the purpose of your fix or feature in your PR description, and link to any relevant issues. Ensure your commit messages are clear, concise, and adhere to the project's conventions.
• ✅ Synchronize with Source: Confirm your PR is synchronized with the ultralytics/pre-commit main branch. If it's behind, update it by clicking the 'Update branch' button or by running git pull and git merge main locally.
• ✅ Ensure CI Checks Pass: Verify all Ultralytics Continuous Integration (CI) checks are passing. If any checks fail, please address the issues.
• ✅ Update Documentation: Update the relevant documentation for any new or modified features.
• ✅ Add Tests: If applicable, include or update tests to cover your changes, and confirm that all tests are passing.
• ✅ Sign the CLA: Please ensure you have signed our Contributor License Agreement if this is your first Ultralytics PR by writing "I have read the CLA Document and I sign the CLA" in a new message.
• ✅ Minimize Changes: Limit your changes to the minimum necessary for your bug fix or feature addition. "It is not daily increase but daily decrease, hack away the unessential. The closer to the source, the less wastage there is." — Bruce Lee

For more guidance, please refer to our Contributing Guide. Don't hesitate to leave a comment if you have any questions. Thank you for contributing to Ultralytics! 🚀

[UltralyticsAssistant]

🔍 PR Review

_{Made with ❤️ by Ultralytics Actions}

Clean PR. The workflow matches the documented CLA action integration, pins the action to a commit, limits execution to pull-request comments and PR lifecycle events, and uses the required permissions and tokens.

[UltralyticsAssistant]

🎉 Thank you, @glenn-jocher, for merging this valuable contribution!

“Great things are done by a series of small things brought together.” — Vincent van Gogh

This PR’s automated CLA workflow makes contribution management more consistent and efficient, helping ensure that every contributor can participate smoothly while keeping the project moving forward. We appreciate your continued support of the Ultralytics open-source community!