URI Name

Yields the local name component of a URI-typed expression result. Works on any value that carries a name — a ReferenceKanonak (its target's local name), an EntityUri / KanonakUri (its `name` field), a SubjectKanonak bound via VarRef in a SetTransformation iteration (its `name` field), or an EmbeddedKanonak (its optional dict-key origin name; empty string for positional embeddeds).