ajuelosemmanuel/duolingOSINT ? reverse-engineered prompt

Build me a small Python tool that can look up a Duolingo user from either their email address or their username and print out whatever public profile info it can find.

I want it to work from the command line, so I can run something like python duolingOSINT.py -m email@example.com or python duolingOSINT.py -u someusername. It should show the username, profile picture link, name, account creation date, country, streak, whether the account has recent activity, and the languages they study, including crowns and XP for each one.

Keep it simple and readable, and if you need to check current Duolingo API details or docs online, go ahead and do that. Also make sure it has a clean help message and handles missing or invalid input nicely.