Agent

You give it a goal and it takes the steps itself, the difference from a chat window, which only hands you instructions to carry out.

For a shop owner that is the whole point. You describe the tool you want in the words you would use with your bookkeeper, and it writes the code.

The mistake is treating it like a vending machine. It will do the wrong thing confidently and at speed. Your job is not to write code, it is to read what it proposes, ask why, and say no sometimes.