It seems that you’ve referred to a Pull Request (PR) that is currently undefined or missing specific details. To help you craft a summary for an advanced developer regarding a PR for the Thanos project, you would typically include these key components:

1. Title of the PR: What is it specifically about?
2. Description: A brief overview of what the PR aims to achieve, including any specific features or fixes.
3. Motivation: Why is this change necessary? What problem does it solve?
4. Implementation Details: Discuss the changes made in the code, including any important files affected.
5. Testing: Describe how the changes have been tested and any relevant results.
6. Impact: Explain how this PR affects the overall project—are there any breaking changes or new dependencies?
7. Related Issues/PRs: If applicable, mention any issues or previous PRs that this one addresses or is related to.

Once you have those pieces of information, you can present a comprehensive summary suited for an advanced developer.

If you can provide specific details about the Pull Request, I can help you craft a more tailored summary.