Darshanwalher/Code_Reviewer ? reverse-engineered prompt

Build me a full stack AI code review app that lets me paste code into a clean dark themed editor, click a Review button, and get back a senior engineer style review in a nicely formatted panel.

I want it to focus on code quality, performance, security, and scalability, with clear feedback on bad patterns, issues, and a better refactored version of the code. The response should read like a real code review, not just a generic summary, and it should render markdown nicely with highlighted code blocks.

Use a React frontend with a smooth editor experience and a Node and Express backend that sends the submitted code to Gemini for analysis. Make the app feel polished, with loading states, error handling, and a layout that puts the editor on one side and the review results on the other. If you need to, look up the current docs for any library or API details online while building it.