linkdAPI/linkedin-leads-discover ? reverse-engineered prompt

Build me a Python app that acts like a LinkedIn lead discovery tool.

I want to start from a few LinkedIn usernames, or load them from a text file, then automatically खोज similar profiles in a tree style way so it keeps finding more and more related leads from each profile. It should remove duplicates, show progress live as it goes, and keep track of the discovery paths so I can view the full tree later.

Please make it easy to run from the command line with a simple menu where I can start discovery, view discovered profiles, inspect the tree, and export everything to CSV or JSON. I also want a config file for my API key, and a clean README style setup that explains how to install and run it. If you need current docs or best practices for the API, look them up online first.