Ask HN: Examples of Design Doc Translated SWE Task List

I’m trying to find a concrete example of where a design doc has been turned into a concrete task list. For example, if there is something like a detailed guide that contains product idea -> design doc -> epic -> story -> tasks list -> Kanban board.

If I search there are plenty of primers and introductions to agile that give an overview of this and a few examples of what would show up on a task list. There are also examples of a task list for very simple projects such as creating a basic webpage. But I haven't been able to find something with the detail you’d actually see as an SWE working on an actual product.

There’s also the other end, such as the chromium project, which has a lot of documentation but the project is so big the design doc and everything else is just overwhelming.

Are there any tutorials, open source projects, books, etc that provide a lot of details about how a product idea can go from design doc to a detailed task list? Something an SWE/Developer might actually see in their job, and not just examples of what would go in a task list/Kanban board?