Build a Gradio Interface for Agent Interaction and Visualization

Develop a Gradio web interface that allows users to submit a coding problem description and unit tests. The interface should display the agent's progress, showing the generated code at each iteration, the test results, and the feedback provided by DeepEval. Include a final section for the successfully refined code. Demonstrate how Gradio components can be used to build this interactive visualization and how it would communicate with your OpenAI Agents SDK backend.