Adds license.FeatureVulnScanning as the one name for the feature and a
catalogue row per deployment/tier, following console and oidc: features
are opt-in per customer, so no plan bundles it.
Documents the subsystem in CLAUDE.md, including that ScopedCollections is
the canonical registry instance deletion derives from — there is no
separate deletion list, which the plan had wrong.
Docusaurus 3 docs-only site at docsite/, served statically by nginx under
/docs on the marketing host. Covers getting started (self-hosted install
through first server and first licence), the control plane, Vantage HQ,
a reference section and operations.
Wired into docker-compose.site.yml as docsite (3005:80) and into the
image build workflow, rebuilding on its own directory only. Never added
to the self-hosted compose file.