openai-agents 0.18.1 gained a websockets runtime dep that nixpkgs does not
declare yet, and nixpkgs' openai 2.53.0 is past omnigent's <2.45 cap.

jellyfin only listens on IPv4, but yellow.r also resolves to its
retiolum AAAA. nginx round-robined both addresses, so requests
hitting the v6 upstream failed and poisoned the upstream group,
causing intermittent 502 'no live upstreams' on flix.lassul.us.

Also drop the stale duplicate flix vhost from container-host.nix.

kubo node (swarm :4001, gateway NoFetch) + anonymous tarball -> ipfs add
(blockstore, no --nocopy) -> pinned -> returns CID; refuses uploads with
<300GiB free; explicit ipfs-gc + ipfs-roots (pins are the stored GC roots).
dns: ipfs -> CNAME neoprism, starkstrom -> A 194.110.87.67.

BIOS/GPT disko on /dev/vda, static networkd, retiolum (inline
krebs.hosts.starkstrom); clan vars + nixos-facter; server tag,
internet host, deploy.forwardAgent.