The agent successfully fixed the root cause of the issue without modifying the tests, achieving a high score on the rubric. The code is clean and maintainable, and all tests passed, demonstrating adherence to the instructions and efficient problem-solving.

The agent successfully reduced the cyclomatic complexity of `calculate_price` from 18 to 2, which meets the target. The code changes were effective, and all tests passed, but there may be minor code issues that prevent a higher score.

The agent implemented comprehensive error handling for various scenarios, demonstrating structured logging and graceful degradation. However, the absence of retry logic or full traceability prevented a higher score.

The agent successfully fixed both interdependent bugs in the retry handler and all tests passed. The changes were focused, but there may have been room for a smaller diff to achieve a higher score.