Aarjav-333/fraud-detection-graphml ? reverse-engineered prompt

Build me a financial fraud detection and investigation app with a clean admin dashboard.

I want to be able to sign in, view an overview of suspicious activity, add or upload account and transaction data, and then see which records look risky based on both rule checks and machine learning. It should generate synthetic banking style data too, so the app still works out of the box with a few thousand accounts and lots of transactions. I also want graph based analysis, so the system can show connected accounts, fraud rings, central accounts, and other relationship based patterns in a way that is easy to inspect visually.

Please make the frontend polished and simple to use, and have the backend handle the database, scoring, alerts, and investigation views. If you need to look up current docs online for any libraries, go ahead.