This would be a great starting point for the repo. The goal would be to have this layman-level knowledge like this and then flesh out the extreme technical details by crowdsourcing verified experts. I'm especially interested in how to organize traumatized people in a productive way, since that will likely be one of the biggest hurdles to overcome.
Like a wikipedia, but condensed, useful, and navigable. Preferably able to store offline / locally or decentralized. Would have to identify what basis is necessary for rebuild and what is luxury. A large majority of things today are simply luxury. I love the idea of it though and would def try and contribute somehow even though my skill and knowledge base isnt comparable to others.
An offline dump of Wikipedia would be a valuable addition to such a library. I've been thinking of storing something like this on a durable laptop stored in a Faraday cage, along with solar chargers and so on.