So the law should really be one giant program that legislators should "commit" code to, after code review of course.

Neat idea.

Train a neural net on all previous court data, and use it to preside over the bulk of redundant court cases. Call it De jure Recursive Engine Driving Decisions, or Judge D.R.E.D.D.

I always loved how the Judge DREDD video game went batshit crazy with acronyms.

Isn't it already?

State code can be published as a single tome.

Committees write and review updates.

In a bicameral legislature, there are usually review processes between the houses (QA?)

The legislative body votes (commits) the changes.

Then the governor acts as a final QA step before pushing to production.

To a point, but if you look at most laws, especially tax laws, you'll see a completely lack of logic in many of them, so much so that they literally could not be put into a program.

My first exposure to Robert's Rules of Order was "OMG! Wait til gamers hear about this! It'll be like crack for them."