NamesServed read a route's public `name` and plan.go then filtered by suffix — telling the mesh's
names from public ones by their spelling, when the mesh composed both itself. It now publishes the
`internal-name` it composed under the serving node (ADR 0151); the suffix filter is gone.
The names region attributed a composed name to whichever labelled contribution a map yielded last.
A dashboard contributes its label to its route and to the identity provider, which must know the
public name for a redirect; so on one plan grafana.<domain> pointed at the proxy's machine and on
the next at the identity provider's, and the whole region flipped with it (forge issue 227). And a
module routed several times contributed no name at all, because the single-value reading of its
contributions is empty for the many shape.
Now every node's resolution is read first and the names are attributed across them at once: the
terminus serves the name — the provider that is not itself published under a labelled name through
another — walked in order, so one mesh yields one region. Name-agnostic, structural, deterministic.
jschoubben