NtrRaz/txtExtractor ? reverse-engineered prompt

Build me a Telegram bot in Python that can extract text and download batch content from a bunch of education apps and sites, like Physics Wallah, Classplus, Careerwill, Exampur, Khan GS, and the other sources listed in the README.

I want it to respond to simple bot commands like start, txt, cp, cw, down, forward, and restart, and show that it is alive when someone sends start. It should be able to take a list of links or forwarded messages, process them in bulk, and save or send back the extracted text or downloadable content in a clean way. If it needs API IDs, bot token, or session setup, make that easy to configure with environment variables.

Please make it ready to run locally and also easy to deploy on Heroku or a similar host, since the repo already has those files. Keep the code organized, make the bot stable, and if you need current docs or small implementation details, look them up online.