I self hosted it within a docker container on Open media vault. So it is possible to host it on an nas (if you can use docker). My ebook flow works a similar way to op’s. Though I have to be on my home WiFi to download books using the kobo. Or connecting to a router with a Vpn to my server.

They didn’t actually throw the manifesto away and they’re not doing too badly against it: https://fullfact.org/government-tracker/