Respect source channel for agent event surfacing (#36030)

src/auto-reply/reply/agent-runner-execution.ts

@@ -26,6 +26,7 @@ import {
   isMarkdownCapableMessageChannel,
   resolveMessageChannel,
 } from "../../utils/message-channel.js";
+import { isInternalMessageChannel } from "../../utils/message-channel.js";
 import { stripHeartbeatToken } from "../heartbeat.js";
 import type { TemplateContext } from "../templating.js";
 import type { VerboseLevel } from "../thinking.js";
@@ -113,11 +114,17 @@ export async function runAgentTurnWithFallback(params: {
     didNotifyAgentRunStart = true;
     params.opts?.onAgentRunStart?.(runId);
   };
+  const shouldSurfaceToControlUi = isInternalMessageChannel(
+    params.followupRun.run.messageProvider ??
+      params.sessionCtx.Surface ??
+      params.sessionCtx.Provider,
+  );
   if (params.sessionKey) {
     registerAgentRunContext(runId, {
       sessionKey: params.sessionKey,
       verboseLevel: params.resolvedVerboseLevel,
       isHeartbeat: params.isHeartbeat,
+      isControlUiVisible: shouldSurfaceToControlUi,
     });
   }
   let runResult: Awaited<ReturnType<typeof runEmbeddedPiAgent>>;

src/auto-reply/reply/followup-runner.ts

@@ -10,6 +10,7 @@ import type { TypingMode } from "../../config/types.js";
 import { logVerbose } from "../../globals.js";
 import { registerAgentRunContext } from "../../infra/agent-events.js";
 import { defaultRuntime } from "../../runtime.js";
+import { isInternalMessageChannel } from "../../utils/message-channel.js";
 import { stripHeartbeatToken } from "../heartbeat.js";
 import type { OriginatingChannelType } from "../templating.js";
 import { isSilentReplyText, SILENT_REPLY_TOKEN } from "../tokens.js";
@@ -131,10 +132,17 @@ export function createFollowupRunner(params: {
   return async (queued: FollowupRun) => {
     try {
       const runId = crypto.randomUUID();
+      const shouldSurfaceToControlUi = isInternalMessageChannel(
+        resolveOriginMessageProvider({
+          originatingChannel: queued.originatingChannel,
+          provider: queued.run.messageProvider,
+        }),
+      );
       if (queued.run.sessionKey) {
         registerAgentRunContext(runId, {
           sessionKey: queued.run.sessionKey,
           verboseLevel: queued.run.verboseLevel,
+          isControlUiVisible: shouldSurfaceToControlUi,
         });
       }
       let autoCompactionCompleted = false;

src/gateway/server-chat.agent-events.test.ts

@@ -612,6 +612,29 @@ describe("agent event handler", () => {
     expect(nodePayload.runId).toBe("run-fallback-client");
   });
 
+  it("suppresses chat and node session events for non-control-UI-visible runs", () => {
+    const { broadcast, nodeSendToSession, handler } = createHarness({
+      resolveSessionKeyForRun: () => "session-hidden",
+    });
+    registerAgentRunContext("run-hidden", {
+      sessionKey: "session-hidden",
+      isControlUiVisible: false,
+      verboseLevel: "off",
+    });
+
+    handler({
+      runId: "run-hidden",
+      seq: 1,
+      stream: "assistant",
+      ts: Date.now(),
+      data: { text: "Reply from imessage" },
+    });
+    emitLifecycleEnd(handler, "run-hidden", 2);
+
+    expect(chatBroadcastCalls(broadcast)).toHaveLength(0);
+    expect(nodeSendToSession).not.toHaveBeenCalled();
+  });
+
   it("uses agent event sessionKey when run-context lookup cannot resolve", () => {
     const { broadcast, handler } = createHarness({
       resolveSessionKeyForRun: () => undefined,

src/gateway/server-chat.ts

@@ -502,6 +502,7 @@ export function createAgentEventHandler({
     const chatLink = chatRunState.registry.peek(evt.runId);
     const eventSessionKey =
       typeof evt.sessionKey === "string" && evt.sessionKey.trim() ? evt.sessionKey : undefined;
+    const isControlUiVisible = getAgentRunContext(evt.runId)?.isControlUiVisible ?? true;
     const sessionKey =
       chatLink?.sessionKey ?? eventSessionKey ?? resolveSessionKeyForRun(evt.runId);
     const clientRunId = chatLink?.clientRunId ?? evt.runId;
@@ -556,7 +557,7 @@ export function createAgentEventHandler({
     const lifecyclePhase =
       evt.stream === "lifecycle" && typeof evt.data?.phase === "string" ? evt.data.phase : null;
 
-    if (sessionKey) {
+    if (isControlUiVisible && sessionKey) {
       // Send tool events to node/channel subscribers only when verbose is enabled;
       // WS clients already received the event above via broadcastToConnIds.
       if (!isToolEvent || toolVerbose !== "off") {

src/infra/agent-events.test.ts

@@ -61,4 +61,26 @@ describe("agent-events sequencing", () => {
 
     expect(phases).toEqual(["start", "end"]);
   });
+
+  test("omits sessionKey for runs hidden from Control UI", async () => {
+    resetAgentRunContextForTest();
+    registerAgentRunContext("run-hidden", {
+      sessionKey: "session-imessage",
+      isControlUiVisible: false,
+    });
+
+    let receivedSessionKey: string | undefined;
+    const stop = onAgentEvent((evt) => {
+      receivedSessionKey = evt.sessionKey;
+    });
+    emitAgentEvent({
+      runId: "run-hidden",
+      stream: "assistant",
+      data: { text: "hi" },
+      sessionKey: "session-imessage",
+    });
+    stop();
+
+    expect(receivedSessionKey).toBeUndefined();
+  });
 });

src/infra/agent-events.ts

@@ -15,6 +15,8 @@ export type AgentRunContext = {
   sessionKey?: string;
   verboseLevel?: VerboseLevel;
   isHeartbeat?: boolean;
+  /** Whether control UI clients should receive chat/agent updates for this run. */
+  isControlUiVisible?: boolean;
 };
 
 // Keep per-run counters so streams stay strictly monotonic per runId.
@@ -37,6 +39,9 @@ export function registerAgentRunContext(runId: string, context: AgentRunContext)
   if (context.verboseLevel && existing.verboseLevel !== context.verboseLevel) {
     existing.verboseLevel = context.verboseLevel;
   }
+  if (context.isControlUiVisible !== undefined) {
+    existing.isControlUiVisible = context.isControlUiVisible;
+  }
   if (context.isHeartbeat !== undefined && existing.isHeartbeat !== context.isHeartbeat) {
     existing.isHeartbeat = context.isHeartbeat;
   }
@@ -58,10 +63,10 @@ export function emitAgentEvent(event: Omit<AgentEventPayload, "seq" | "ts">) {
   const nextSeq = (seqByRun.get(event.runId) ?? 0) + 1;
   seqByRun.set(event.runId, nextSeq);
   const context = runContextById.get(event.runId);
-  const sessionKey =
-    typeof event.sessionKey === "string" && event.sessionKey.trim()
-      ? event.sessionKey
-      : context?.sessionKey;
+  const isControlUiVisible = context?.isControlUiVisible ?? true;
+  const eventSessionKey =
+    typeof event.sessionKey === "string" && event.sessionKey.trim() ? event.sessionKey : undefined;
+  const sessionKey = isControlUiVisible ? (eventSessionKey ?? context?.sessionKey) : undefined;
   const enriched: AgentEventPayload = {
     ...event,
     sessionKey,