Tracks the gpustack identity-consolidation effort: the unified
``principals`` table's URL-safe identifier column was renamed
``slug`` → ``name`` (with the legacy display ``name`` → ``display_name``).
The enterprise plugin's persisted org caches (``organizationList``,
``allOrganizations`` in localStorage) now write ``name`` instead of
``slug`` on each Organization row.
``getCurrentOrgNamespace`` reads those caches to compose the k8s
namespace (``gpustack-{name}``) for GPU-instance / storage CRDs.
Updated to read ``item.name`` so namespace resolution stays in sync
with what the enterprise plugin writes — otherwise every gpu-service
write would fall through to ``gpustack-default`` even when the user
has an Org context.
Stale ``slug`` references in surrounding comments also retitled to
``name`` to avoid divergence between code and prose. The namespace
format itself (``gpustack-{...}``) is unchanged — only the column it
sources is.
