Plane Issue ──→ n8n Webhook (verifica segredo, dedupe, normalize)
                 │
                 └──→ POST /ai/tasks/route (Supervisor)
                         │
                         ├── Prefer LangGraph? (flag/política) ── sim ──→ LangGraph
                         │                                              │
                         │                                              ├─ retrieve_kb (RAG, KB+pgvector)
                         │                                              ├─ tools (AWX/n8n) + awx_watcher
                         │                                              └─ respond → persist (tasks, task_events,
                         │                                                              graph_runs/steps, KB)
                         │
                         └── não ──→ WS Bridge (Socket.IO)
                                        ├─ new_task → ack → progress → complete
                                        └─ persist (tasks, task_metrics, task_events, KB)

                         TimeoutManager (ack/progress/overall)
                         ├─ reassign (eventos) ou timeout_final
                         └─ fallback (quando habilitado)

                         n8n (Result/Comment)
                         └─ Comenta no Plane sumário + link do Console

Persistências (Postgres)
  - tasks: estado final e snapshot
  - task_metrics: latências (ack/total), tentativas e reassigns
  - task_events: timeline (routed_ws/fallback, ack, progress, complete, timeouts, reassign, awx_status/complete)
  - knowledge_base (+ embeddings): aprendizado coletivo para RAG
  - graph_runs / graph_steps: trilha de execuções do LangGraph

Observabilidade
  - Console: Agentes / Tarefas / Tools / Graph Runs / Task Metrics (CSV)
  - /metrics (Prometheus)
  - Botão “events” por tarefa (timeline)

Mensagens agent↔agent
  - agent:request | agent:response (via Supervisor), com auditoria em agent_messages