NightfallGT/Instagram-Username-Checker — reverse-engineered prompt

Build me a simple Python tool that checks a list of Instagram usernames and tells me which ones look available. I want to put usernames into a text file, run one command, and have the available ones saved into a separate file called hits.txt.

It should check each Instagram profile URL and treat a missing page as probably available, but make it clear in the app that this is not perfect because it is not using the official Instagram API. Please make it run fast using async requests, but don’t overdo it so much that it instantly gets rate limited. Add simple console messages so I can see what it is checking, what is taken, what might be available, and when it is finished.

Keep it easy for a beginner to use. Include a short README with setup steps, how to install the needed Python package, where to put usernames, and how to run it. This is just for educational use.