During a pair-programming interview, you wrote the rover simulator code using an AI coding assistant. The code works for the basic examples, but the interviewer asks: “Assume this code was largely generated by AI. What would you improve before shipping it?” Provide a structured code review plan and concrete improvements covering: - Correctness and edge cases - API design and readability - Test strategy - Maintainability/extensibility (e.g., multiple rovers, 3D) - Performance and failure modes (invalid inputs, boundaries, collisions) Be specific about what you would change and why.