Hundreds of lines that you have to carefully read and understand.

Are you not doing that already?

I go line-by-line through the code that I wrote (in my git client) before I stage+commit it.

You read at the same speed line-by-line your code when you are in your git client?

You are doing something wrong. I go line-by-line through my code like 7x faster than I would do it for someone's else code, because I know what I wrote, my own intentions, my flow of coding and all of those details. I can just look at it en passant, while with AI code I need to carefully review every single detail and the connection between them to approve it.

Yes, but you know the kind of code you write. When you re-check it, you are looking for minor typos, no major logic flaws affecting half the committed code.

You also have to do that with code you write without LLM assistance.

Depends on what it is doing. A html template without JS? Enough to just check if it looks right and works.