`swarm.*` is what a hive needs to be a *client* of the swarm. For Grafana
that is the package, the name it is served under, the port its `/metrics`
is re-served on, and the OIDC client it is registered as. Where its
datasources point, which plugins sit in its store path and the directory
it shares a socket with nginx through are decisions of the machine
running it, so datasourceUrl, logsDatasourceUrl, plugins and socketDir
move to `deploy.grafana.*`.
The two URLs are the interesting half. `swarm-grafana.nix`'s own summary
sentence said what stays is "its package, domain, and wiring" — and both
datasource URLs ARE wiring, so that sentence is rewritten with the move
rather than left asserting the opposite of what the module does. They
move because a URL's scope is the scope of what it ADDRESSES, not the
fact that it is a URL: docs/swarm/services.md already said datasourceUrl
"defaults to the store on this host, which is the only thing it can
reach", because that store binds loopback. The doc argues the move.
`socketDir` was already ruled host-side: the directory is shared between
the host's nginx and the container, and it is the same shape as the
options that moved in earlier slices.
Declared in swarm-grafana.nix under the `deploy.*` path, following
swarm-nats.nix; deploy.nix carries only the renames. One reader outside
the options block is prose: `metricsPort` STAYS and cross-referenced
`{option}services.hyperhive.swarm.grafana.socketDir`, which the split
makes a pointer to another rendered page — nixosOptionsDoc emits
swarm.md and deploy.md separately. Requalified, along with the one line
in docs/swarm/services.md that named a mover.
module-eval configures a hive through all four OLD paths and asserts a
rendered effect: the host tmpfiles rule that creates the socket
directory carries the fixture's custom path. The new paths evaluate fine
without the shims, so dropping them has to read as a clean tree; all
four are defined in the fixture, so removing any single shim fails the
eval rather than only the one the assertion reads.
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