Product stories
The decisions from the inside, told in full: the data model, the price, and the list of things we are not going to build.
The decisions, with their cost
Why a client and a brand are two different tables. Why there is no free plan. Why we do not publish to every network that exists. These are the decisions that explain how the product behaves, and they are usually only told inside the company.
They are written with both halves: what we gained by deciding it that way and what we gave up. A decision told only from its good side is an advertisement under another name.
No stories yet
They go out one at a time and they are written slowly, because each one means showing a part of the product from the inside, and that is not something to improvise in an afternoon.
The closest thing in the meantime is Features: every module page says where the piece stops and why it stops there, which is half of what a story tells.