This is the template for the prompt that is used here (everything below "{copy_rule}"): https://github.com/netizer/feature-ledger/blob/main/assets/B...

The core idea is identifying features where you answer "yes" to the question: "Could you demo it?"

Regarding the value of such tools when working with codebases whith heavy coding agent use - absolutely. Especially when code generated by models such as Astra can be pretty unreadable (https://news.ycombinator.com/item?id=49654229)