Just check the leaked code yourself. Two biggest areas seem to be the `utils` module, which is a kitchen sink that covers a lot of functionality from sandboxing, git support, sessions, etc, and `components` module, which contains the react ui. You could certainly build a cli agent with much smaller codebase, with leaner ui code without react, but probably not with this truckload of functionality.

Software doesn’t end at the 20k loc proof of concept though.

What every developer learns during their “psh i could build that” weekendware attempt is that there is infinite polish to be had, and that their 20k loc PoC was <1% of the work.

That said, doesn't TFA show you what they use their loc for?

Comments like these remind me of the football spectators that shout "Even I could have scored that one" when they see a failed attempt.

Sure. You could have. But you're not the one playing football in the Champions League.

There were many roads that could have gotten you to the Champions League. But now you're in no position to judge the people who got there in the end and how they did it.

Or you can, but whatever.

Honest question: Why does it matter? They got the product shipped and got millions of paying customers and totally revolutionized their business and our industry.

Engineers using LOC as a measure of quality is the inverse of managers using LOC as a measure of productivity.