Talaviya-Sarthak/BizIntel ? reverse-engineered prompt

Build me a polished enterprise intelligence web app with a professional landing page, user sign up and login, and a simple authenticated dashboard.

I want the app to use a React frontend and a TypeScript Express backend with a versioned REST API, plus PostgreSQL for the data. Please make the authentication secure with HTTP only cookies and hashed passwords, and include a basic account profile endpoint so the logged in user can be loaded on refresh. Add a health check, clear success and error responses, and a clean setup for database migrations and seeding so the project is easy to run locally.

Keep the code organized so it feels ready to grow into analytics, backtesting, and an AI assistant later. Make the UI feel modern and production ready, and include enough docs or comments that I can understand how to start it, test it, and run it. If you need current library details, look up the latest docs online.