관련 Step: ../../steps/step3.md
sequenceDiagram
autonumber
actor U as User
participant LG as LangGraph (MCP-only)
participant A2AD as Deep/HITL A2A (8090)
participant A2AR as Researcher A2A (8091)
participant A2AS as Supervisor A2A (8092)
U->>LG: Query (same topic)
LG-->>U: Final Report
U->>A2AS: Query (same topic)
A2AS->>A2AR: Delegate research
A2AR-->>A2AS: Findings
A2AS->>A2AD: Orchestrate final report
A2AD-->>U: Final Report (A2A)