NullArray/DorkNet ? reverse-engineered prompt

Build me a small Python tool that uses Selenium and Firefox’s driver to automate searching the web with one dork or a list of dorks, then saves the results to a text file so I can review them later.

I want it to run from the command line with simple options for a single search term, a file of search terms, and a verbose mode. It should also let me use a proxy if I want, and include a headless mode for running long lists without opening a browser window. If you need to look up current setup details for Firefox driver or Selenium, go ahead and check the docs online.

Please also include a quick setup script that helps install the driver and any Python requirements, and make the whole thing easy to run from a fresh clone. Keep it simple and practical, with clear output and reasonable error handling if the browser, driver, or proxy settings are missing or bad.