OP asked longest-serving programmer. That doesn't involve people who switched to management or some other position like CEO.

You don't know that. I have served as CEO and still coded every day.

As did I. Common at smaller companies with tech CEOs.

But that wasn't your primary role or you would identify as programmer not a CEO.

Having said that no matter what role it's good to code everyday.

It was my primary role. I coded for many hours every day as CEO. It did make for a lot of long days. I can identify as both CEO and programmer. And musician and other things. No need for gatekeeping.

The CEO is the chief executive responsible for execution. Is programming not a form of execution? Why would the two be mutually exclusive?

It would be fun to have her coming to tell if she's still brainstorming or coding.

Once a coder, always a coder.

“The Universal Systems Language (USL) is based on a preventive, development-before-the-fact philosophy that does not allow errors in, in the first place.”

Funny that there’s an error in that sentence.

Which is? The 2 "in"'s seem correct to me.

Oh really? Seems wrong to me.