Phase 4 of the ClusterClient -> gRPC migration deleted the Akka transports
but left the naming behind: `ClusterClientSiteAuditClient` was transport-
agnostic and worked unchanged, so it survived the deletion under a name
that now describes a transport the repo no longer has. Same for a scatter
of doc-comments still framing gRPC as "the new transport" beside an Akka
one that is gone.
Renames it to `SiteCommunicationAuditClient` (and its test file) and
rewrites the stale comments to describe the single transport that exists.
Also tightens CLAUDE.md: drops the self-describing directory listing and
the 27-component enumeration in favour of the non-obvious parts only.
Behaviour-neutral: names and prose only. Recorded as the Phase 4
follow-up in docs/plans/2026-07-22-clusterclient-to-grpc-plan.md.
Also extends AddAttributeAsync with an optional dataSourceReference parameter
so the fixture attribute appears in both _bindingDataSourceAttrs (bindings UI)
and _overrideAttrs (overrides UI) on the InstanceConfigure page.
In Disable_Instance_ShowsOutcomeToast and Enable_Instance_ShowsOutcomeToast, the
precondition CLI calls (DeployInstanceAsync / DisableInstanceAsync) were between
CreateInstanceAsync and the try block. A throw there would skip the finally
DeleteInstanceAsync, leaking the instance. Moved those calls to be the first
statements inside try so cleanup always runs once the instance exists.
Joseph Doherty