feat(frontend): Monitoramento em tempo real (WebSocket via proxy SSE)

O RealtimeGateway (backend, desde a PHASE 13) autentica a conexão
socket.io via auth.token no handshake — um JWT bruto que um
EventSource/WebSocket do browser não tem como mandar sem passar por JS
legível no client, quebrando o princípio seguido em todo o resto do
frontend (token só existe no cookie httpOnly). Resolvido com um proxy:
apps/frontend/src/app/api/monitoring/stream/route.ts roda no servidor,
conecta no socket.io real com o access token do lado do servidor, e
reencaminha cada evento pro browser como Server-Sent Events — o
EventSource do client só precisa do cookie de sessão, nunca do token.

/app/monitoramento: badge de conexão, contadores de sessão (chamadas
criadas/atendidas/encerradas), filas ao vivo (QUEUE_MEMBER_COUNT), estado
de agentes ao vivo (AGENT_STATE_CHANGED, semeado do GET /agents inicial),
feed dos últimos 50 eventos. Menu "Monitoramento" vira 1 link direto em
vez de 5 sub-itens placeholder — o painel novo já cobre tudo numa página
só.

Testado ponta a ponta contra o pipeline real (não simulado): cliente
socket.io cru confirmou a API entregando o evento, curl -N confirmou o
proxy reencaminhando, e com a página aberta de verdade num browser
(Puppeteer) disparei POST /agents/me/login e /logout por fora — o badge
do agente mudou ao vivo e os eventos apareceram no feed sem recarregar a
página. Smoke test de regressão nas 19 telas anteriores, todas 200.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BFaBaBSQGhyXGEgtTYZGV8

apps/frontend/src/app/api/monitoring/stream/route.ts

@@ -0,0 +1,79 @@
+import { io } from "socket.io-client";
+import { API_BASE_URL } from "@/lib/api";
+import { getSession } from "@/lib/session";
+
+export const dynamic = "force-dynamic";
+
+/**
+ * Proxy SSE do WebSocket de monitoramento (agente.md secao 54-55, 161).
+ * O gateway real (`RealtimeGateway`, apps/api) autentica a conexão via
+ * `auth.token` no handshake — um JWT bruto. Um `EventSource`/`WebSocket`
+ * do browser não consegue mandar esse token sem que ele passe por JS
+ * legível no client, o que quebraria o mesmo princípio já seguido em todo
+ * o resto do frontend (token só existe no cookie httpOnly). Solução: esta
+ * rota roda no servidor (runtime Node.js), conecta no socket.io real com o
+ * access token do lado do servidor, e reencaminha cada evento pro browser
+ * como Server-Sent Events — o `EventSource` do browser só precisa do
+ * cookie de sessão (same-origin, automático), nunca do token.
+ */
+export async function GET() {
+  const session = await getSession();
+  if (!session) return new Response(null, { status: 401 });
+
+  const encoder = new TextEncoder();
+  let socket: ReturnType<typeof io> | null = null;
+
+  const stream = new ReadableStream({
+    start(controller) {
+      let closed = false;
+      const safeEnqueue = (chunk: string) => {
+        if (closed) return;
+        try {
+          controller.enqueue(encoder.encode(chunk));
+        } catch {
+          closed = true;
+        }
+      };
+      const safeClose = () => {
+        if (closed) return;
+        closed = true;
+        try {
+          controller.close();
+        } catch {
+          // já fechado pelo outro lado (client desconectou) — sem problema
+        }
+      };
+
+      socket = io(API_BASE_URL, {
+        path: "/realtime",
+        auth: { token: session.accessToken },
+        reconnectionAttempts: 5,
+        reconnectionDelay: 2000,
+      });
+
+      socket.on("connect", () => safeEnqueue(`event: connected\ndata: {}\n\n`));
+      socket.on("event", (payload: unknown) => safeEnqueue(`data: ${JSON.stringify(payload)}\n\n`));
+      socket.on("connect_error", (err: Error) =>
+        safeEnqueue(`event: upstream-error\ndata: ${JSON.stringify({ message: err.message })}\n\n`),
+      );
+      socket.on("disconnect", () => safeClose());
+      // Rede caiu de vez ou o token nunca vai autenticar (secao 148) — nesses
+      // casos manter tentando pra sempre só gastaria CPU/conexões à toa.
+      // O browser tenta uma conexão SSE nova sozinho (comportamento padrão
+      // do EventSource) se realmente for transitório.
+      socket.io.on("reconnect_failed", () => safeClose());
+    },
+    cancel() {
+      socket?.disconnect();
+    },
+  });
+
+  return new Response(stream, {
+    headers: {
+      "Content-Type": "text/event-stream",
+      "Cache-Control": "no-cache, no-transform",
+      Connection: "keep-alive",
+      "X-Accel-Buffering": "no",
+    },
+  });
+}

apps/frontend/src/app/app/monitoramento/monitoramento-view.tsx

@@ -0,0 +1,231 @@
+"use client";
+
+import { useEffect, useMemo, useRef, useState } from "react";
+import { Headset, ListTree, Phone, Radio, Router } from "lucide-react";
+import { Panel, PanelHeader } from "@/components/ui/panel";
+import { InstrumentTile } from "@/components/ui/instrument-tile";
+import { Pill } from "@/components/ui/pill";
+import { AGENT_STATE_LABELS, type Agent, type Queue } from "@/lib/callcenter-types";
+import { EVENT_CATEGORY, stripDomain, type RealtimeEvent } from "@/lib/realtime-types";
+
+type ConnectionStatus = "connecting" | "live" | "reconnecting" | "closed";
+
+const CATEGORY_ICON: Record<string, typeof Phone> = {
+  call: Phone,
+  agent: Headset,
+  queue: ListTree,
+  extension: Router,
+  gateway: Router,
+  other: Radio,
+};
+
+function describeEvent(event: RealtimeEvent, agentNames: Record<string, string>, queueNames: Record<string, string>): string {
+  const agentName = (raw: unknown) => {
+    const id = stripDomain(String(raw ?? ""));
+    return (id && agentNames[id]) || String(raw ?? "—");
+  };
+  const queueName = (raw: unknown) => {
+    const id = stripDomain(String(raw ?? ""));
+    return (id && queueNames[id]) || String(raw ?? "—");
+  };
+
+  switch (event.type) {
+    case "CALL_CREATED":
+      return "Nova chamada criada";
+    case "CALL_RINGING":
+      return "Chamada tocando";
+    case "CALL_ANSWERED":
+      return "Chamada atendida";
+    case "CALL_BRIDGED":
+      return "Chamada conectada (bridge)";
+    case "CALL_UNBRIDGED":
+      return "Chamada desconectada (unbridge)";
+    case "CALL_ENDED":
+      return `Chamada encerrada${event.data.hangupCause ? ` — ${event.data.hangupCause}` : ""}`;
+    case "EXTENSION_REGISTERED":
+      return `Ramal ${event.data.user ?? "?"} registrado`;
+    case "EXTENSION_UNREGISTERED":
+      return `Ramal ${event.data.user ?? "?"} desregistrado`;
+    case "AGENT_STATUS_CHANGED":
+      return `Agente ${agentName(event.data.agent)} — ${event.data.state ?? "?"} (mod_callcenter)`;
+    case "AGENT_STATE_CHANGED":
+      return `Agente ${agentName(event.data.agentId)} — ${AGENT_STATE_LABELS[String(event.data.state)] ?? event.data.state}`;
+    case "AGENT_OFFERED_CALL":
+      return `Fila ${queueName(event.data.queue)} ofereceu chamada ao agente ${agentName(event.data.agent)}`;
+    case "AGENT_BRIDGE_FAILED":
+      return `Falha ao conectar agente ${agentName(event.data.agent)} na fila ${queueName(event.data.queue)}`;
+    case "QUEUE_MEMBER_COUNT":
+      return `Fila ${queueName(event.data.queue)}: ${event.data.count ?? "?"} na espera`;
+    case "QUEUE_MEMBER_LEFT":
+      return `Fila ${queueName(event.data.queue)}: chamada saiu${event.data.cause ? ` (${event.data.cause})` : ""}`;
+    case "GATEWAY_UP":
+      return `Tronco ${event.data.gateway ?? "?"} subiu`;
+    case "GATEWAY_DOWN":
+      return `Tronco ${event.data.gateway ?? "?"} caiu`;
+    case "BACKGROUND_JOB_COMPLETED":
+      return "Job em background concluído";
+    default:
+      return event.type;
+  }
+}
+
+export function MonitoramentoView({ initialAgents, queues }: { initialAgents: Agent[]; queues: Queue[] }) {
+  const [status, setStatus] = useState<ConnectionStatus>("connecting");
+  const [events, setEvents] = useState<RealtimeEvent[]>([]);
+  const [agentState, setAgentState] = useState<Record<string, string>>(() =>
+    Object.fromEntries(initialAgents.map((a) => [a.id, a.state])),
+  );
+  const [queueCounts, setQueueCounts] = useState<Record<string, number>>({});
+  const [tallies, setTallies] = useState({ created: 0, answered: 0, ended: 0 });
+
+  const agentNames = useMemo(() => Object.fromEntries(initialAgents.map((a) => [a.id, a.name])), [initialAgents]);
+  const queueNames = useMemo(() => Object.fromEntries(queues.map((q) => [q.id, q.name])), [queues]);
+
+  const eventsRef = useRef<RealtimeEvent[]>([]);
+
+  useEffect(() => {
+    const source = new EventSource("/api/monitoring/stream");
+
+    source.addEventListener("connected", () => setStatus("live"));
+    source.addEventListener("upstream-error", () => setStatus("reconnecting"));
+
+    source.onmessage = (message) => {
+      let event: RealtimeEvent;
+      try {
+        event = JSON.parse(message.data);
+      } catch {
+        return;
+      }
+
+      eventsRef.current = [event, ...eventsRef.current].slice(0, 50);
+      setEvents(eventsRef.current);
+
+      if (event.type === "CALL_CREATED") setTallies((t) => ({ ...t, created: t.created + 1 }));
+      if (event.type === "CALL_ANSWERED") setTallies((t) => ({ ...t, answered: t.answered + 1 }));
+      if (event.type === "CALL_ENDED") setTallies((t) => ({ ...t, ended: t.ended + 1 }));
+
+      if (event.type === "AGENT_STATE_CHANGED") {
+        const agentId = String(event.data.agentId ?? "");
+        if (agentId) setAgentState((prev) => ({ ...prev, [agentId]: String(event.data.state) }));
+      }
+
+      if (event.type === "QUEUE_MEMBER_COUNT") {
+        const queueId = stripDomain(String(event.data.queue ?? ""));
+        if (queueId && typeof event.data.count === "number") {
+          setQueueCounts((prev) => ({ ...prev, [queueId]: event.data.count as number }));
+        }
+      }
+    };
+
+    source.onerror = () => {
+      setStatus((prev) => (prev === "closed" ? prev : "reconnecting"));
+    };
+
+    return () => {
+      source.close();
+    };
+  }, []);
+
+  return (
+    <div className="space-y-5">
+      <div className="flex flex-wrap items-start justify-between gap-3">
+        <div>
+          <h1 className="text-lg font-semibold text-foreground">Monitoramento em tempo real</h1>
+          <p className="mt-1 max-w-2xl text-sm text-muted-foreground">
+            Eventos ao vivo do FreeSWITCH pra este tenant (agente.md secao 54-55, 161) — WebSocket
+            tenant-scoped no servidor, nunca um broadcast global filtrado no browser. Contadores desta seção
+            zeram a cada vez que a página é recarregada, não são um total histórico.
+          </p>
+        </div>
+        <ConnectionBadge status={status} />
+      </div>
+
+      <div className="grid grid-cols-1 gap-4 sm:grid-cols-3">
+        <InstrumentTile label="Chamadas criadas" value={tallies.created} live={status === "live"} />
+        <InstrumentTile label="Chamadas atendidas" value={tallies.answered} live={status === "live"} />
+        <InstrumentTile label="Chamadas encerradas" value={tallies.ended} live={status === "live"} />
+      </div>
+
+      <Panel>
+        <PanelHeader title="Filas ao vivo" description="Pessoas na espera — atualiza a cada evento QUEUE_MEMBER_COUNT" />
+        {queues.length === 0 ? (
+          <p className="px-5 py-4 text-sm text-muted-foreground">Nenhuma fila cadastrada ainda.</p>
+        ) : (
+          <div className="grid grid-cols-1 gap-4 p-5 sm:grid-cols-3">
+            {queues.map((q) => (
+              <InstrumentTile
+                key={q.id}
+                label={q.name}
+                value={queueCounts[q.id] ?? null}
+                pending="Sem evento de fila ainda nesta sessão"
+                live={status === "live" && queueCounts[q.id] != null}
+              />
+            ))}
+          </div>
+        )}
+      </Panel>
+
+      <Panel>
+        <PanelHeader title="Agentes" description="Estado atual — muda ao vivo com login/pausa/logout" />
+        {initialAgents.length === 0 ? (
+          <p className="px-5 py-4 text-sm text-muted-foreground">Nenhum agente cadastrado ainda.</p>
+        ) : (
+          <ul className="divide-y divide-border">
+            {initialAgents.map((a) => (
+              <li key={a.id} className="flex items-center justify-between px-5 py-3 text-sm">
+                <span className="flex items-center gap-2 text-foreground">
+                  <Headset className="h-3.5 w-3.5 text-muted-foreground" aria-hidden />
+                  {a.name}
+                </span>
+                <Pill tone={agentState[a.id] === "AVAILABLE" ? "accent" : "neutral"}>
+                  {AGENT_STATE_LABELS[agentState[a.id]] ?? agentState[a.id]}
+                </Pill>
+              </li>
+            ))}
+          </ul>
+        )}
+      </Panel>
+
+      <Panel>
+        <PanelHeader title="Eventos ao vivo" description="Últimos 50 eventos, mais recente primeiro" />
+        {events.length === 0 ? (
+          <p className="px-5 py-4 text-sm text-muted-foreground">
+            {status === "live" ? "Conectado — aguardando o primeiro evento." : "Conectando ao monitoramento…"}
+          </p>
+        ) : (
+          <ul className="max-h-[420px] divide-y divide-border overflow-y-auto">
+            {events.map((event, i) => {
+              const category = EVENT_CATEGORY[event.type] ?? "other";
+              const Icon = CATEGORY_ICON[category] ?? Radio;
+              return (
+                <li key={`${event.occurredAt}-${i}`} className="flex items-start gap-3 px-5 py-2.5 text-sm">
+                  <Icon className="mt-0.5 h-3.5 w-3.5 shrink-0 text-muted-foreground" aria-hidden />
+                  <span className="flex-1 text-foreground">{describeEvent(event, agentNames, queueNames)}</span>
+                  <span className="shrink-0 font-mono text-xs text-muted-foreground">
+                    {new Date(event.occurredAt).toLocaleTimeString("pt-BR")}
+                  </span>
+                </li>
+              );
+            })}
+          </ul>
+        )}
+      </Panel>
+    </div>
+  );
+}
+
+function ConnectionBadge({ status }: { status: ConnectionStatus }) {
+  const config: Record<ConnectionStatus, { label: string; dot: string }> = {
+    connecting: { label: "Conectando…", dot: "bg-status-yellow" },
+    live: { label: "Ao vivo", dot: "bg-status-green animate-pulse-live" },
+    reconnecting: { label: "Reconectando…", dot: "bg-status-yellow" },
+    closed: { label: "Desconectado", dot: "bg-status-red" },
+  };
+  const c = config[status];
+  return (
+    <span className="flex items-center gap-2 rounded-full border border-border bg-muted px-3 py-1.5 text-xs font-medium text-foreground">
+      <span className={`h-2 w-2 rounded-full ${c.dot}`} aria-hidden />
+      {c.label}
+    </span>
+  );
+}

apps/frontend/src/app/app/monitoramento/page.tsx

@@ -0,0 +1,15 @@
+import { requireSession } from "@/lib/session";
+import { apiFetch } from "@/lib/api";
+import type { Agent, Queue } from "@/lib/callcenter-types";
+import { MonitoramentoView } from "./monitoramento-view";
+
+export default async function MonitoramentoPage() {
+  const session = await requireSession();
+
+  const [agents, queues] = await Promise.all([
+    apiFetch<Agent[]>("/agents", session.accessToken),
+    apiFetch<Queue[]>("/queues", session.accessToken),
+  ]);
+
+  return <MonitoramentoView initialAgents={agents} queues={queues} />;
+}

apps/frontend/src/components/tenant-shell/nav-data.ts

@@ -97,7 +97,8 @@ export const TENANT_NAV: NavSection[] = [
   {
     label: "Monitoramento",
     icon: Radar,
-    children: [{ label: "Campanhas" }, { label: "Filas" }, { label: "Agentes" }, { label: "Ramais" }, { label: "Troncos" }],
+    href: "/app/monitoramento",
+    description: "Eventos ao vivo — filas, agentes e chamadas em tempo real",
   },
   {
     label: "Gravações",

apps/frontend/src/lib/realtime-types.ts

@@ -0,0 +1,36 @@
+export interface RealtimeEvent {
+  type: string;
+  occurredAt: string;
+  callUuid?: string;
+  tenantId?: string;
+  b2bcallCallId?: string;
+  b2bcallCampaignId?: string;
+  data: Record<string, unknown>;
+}
+
+/** `agent`/`queue` do mod_callcenter vêm como "<id>@<domain>" (secao 45,
+ * 50); `agentId` de AGENT_STATE_CHANGED já vem cru (publicado pela API,
+ * não pelo FreeSWITCH). Uma função só resolve os dois formatos. */
+export function stripDomain(value: string | undefined): string | undefined {
+  return value?.split("@")[0];
+}
+
+export const EVENT_CATEGORY: Record<string, "call" | "agent" | "queue" | "extension" | "gateway" | "other"> = {
+  CALL_CREATED: "call",
+  CALL_RINGING: "call",
+  CALL_ANSWERED: "call",
+  CALL_BRIDGED: "call",
+  CALL_UNBRIDGED: "call",
+  CALL_ENDED: "call",
+  EXTENSION_REGISTERED: "extension",
+  EXTENSION_UNREGISTERED: "extension",
+  AGENT_STATUS_CHANGED: "agent",
+  AGENT_STATE_CHANGED: "agent",
+  AGENT_OFFERED_CALL: "agent",
+  AGENT_BRIDGE_FAILED: "agent",
+  QUEUE_MEMBER_COUNT: "queue",
+  QUEUE_MEMBER_LEFT: "queue",
+  GATEWAY_UP: "gateway",
+  GATEWAY_DOWN: "gateway",
+  BACKGROUND_JOB_COMPLETED: "other",
+};