panchanansahoo/PrepLoop ? reverse-engineered prompt

Build me a web app called PrepLoop that helps people practice for tech interviews in one place. It should let users sign in, then use an AI powered interview practice flow with voice questions in the browser, a coding practice area for data structures, algorithms, and system design, and company specific question banks for popular tech companies.

I also want a coach style experience that gives feedback after practice, including a transcript, suggestions for improvement, and a simple plan for what to work on next. Add the usual career prep pieces too, like resume help, job related tools, and a place for community content or discussions if that fits naturally.

Make it feel polished and modern, with a React frontend, a Node backend, and Supabase for auth and data. If you need current docs for any AI or voice features, look them up online first. Keep the app runnable locally with clear env setup and a simple way to start both frontend and backend together.