Fleet/keep/middleware NATS_URL lists 10.10.10.21–23. Product streams
are replicas=3. px-worker worm/tree run on that cluster. Backup timer
and px-worker uptime watch are on. MOCK_VERAE and Zapier push unchanged.
Zapier is one ingress. Direct web, customer API, and S2S leaf nodes are their own services. Every hop to an internal subject must pass verae.access.authz.check (default deny by plane).
