Type Alias StructureHopEvent

Emitted by supervisor/router/handoff/pipeline at each delegation point. Combined with each Brick's own bubbled RunEvents (annotated with brickName), a full multi-agent call graph for a given runId can be reconstructed purely from the event stream.

type StructureHopEvent = {
    depth?: number;
    from?: string;
    kind: "supervisor" | "router" | "pipeline" | "handoff";
    runId: string;
    to: string;
    type: "structure:hop";
}