Kavita is for ebooks - it’s not perfect, has some weirdness with series sometimes because of it’s manga heritage.

For me, AudioBookShelf is the clear standout for audio books, and I ended up going with Kavita for ebooks.

I have it in a git repo, broken down by the nodes and vps names. In each of these folders is a mixture of Ansible playbooks, docker compose or just markdown files with the descriptions. Some is random stuff - my VPS allows the export of the cloud firewalls as JSON for instance. All the secrets needed by Ansible are in an Ansible vault, the rest in KeePass.