Reference
The nexSys4 public global separates state from callable behavior:
nexSys
|-- state
`-- api
- State reference: frozen runtime snapshots and branch meanings
- API reference: callable domain namespaces
- Events: events exposed to external packages through Nexus EventStream
Everything below state is data. Everything below api is callable behavior
or an API handle. The Nexus eventStream global is the canonical listener
boundary for external packages. Debug-grade objects returned during
construction are not part of this public contract.