UbaidurRehman99/whatsapp-crm-api ? reverse-engineered prompt

Build me a TypeScript API for a simple WhatsApp CRM.

I want an app that lets me store customer contacts, track conversations, and manage basic CRM data through API endpoints. It should feel like a backend that can sit behind a dashboard later, with clean routes for adding and updating contacts, saving message history, tagging people, and checking conversation status. If it makes sense, include a simple way to organize leads, notes, and follow ups so I can keep track of who needs a reply.

Set it up so it is easy to run locally and easy to extend later. Keep the code clean and practical, with sensible validation and error handling. If you need to look up current docs online for anything, go ahead.

Please also make sure the project has a straightforward folder structure, a working TypeScript setup, and a few example endpoints or sample data so I can see how it is supposed to work.