S-Panjwani/JackBlack ? reverse-engineered prompt

Build me a simple Python app that uses my webcam to detect playing cards in real time and keep a blackjack running count on screen.

It should recognize the visible cards, draw boxes and labels around them, and update a Hi Lo count for single deck blackjack, where 2 to 6 add one, 7 to 9 do nothing, and 10, J, Q, K, A subtract one. Please make sure the same card does not get counted over and over while it stays in the frame.

I want it to feel like a live demo, with the count and detected cards updating smoothly as the camera sees new cards. If you need the current setup or model details, check the existing project files and look up any missing docs online. Also please keep the code clean enough that I can run it from the project easily and understand how to use it.