Madhaveshwar/RepoLens ? reverse-engineered prompt

Build me a full stack app called RepoLens AI that helps people analyze GitHub repositories with AI. I want a clean React frontend and a FastAPI backend that lets users connect a public or private GitHub repo, run a scan, and then see a simple dashboard with progress, health score, security findings, code quality issues, and suggestions for fixes. It should also review pull requests, point out risky code like SQL injection, XSS, secrets, and weak crypto, and generate useful test ideas too.

Please make it feel polished and production ready, with real time scan updates, a modern UI, and export options for PDF, Markdown, JSON, and CSV reports. Store scan results so users can compare history over time. If it needs background jobs, use them for the longer scans. Use the current docs online if anything is unclear, and set it up so I can run it locally with Docker or start the frontend and backend separately.