diff --git a/src/agents/pi-embedded-runner/run/attempt-http-runtime.ts b/src/agents/pi-embedded-runner/run/attempt-http-runtime.ts
new file mode 100644
index 00000000000..ad2d2f38b06
--- /dev/null
+++ b/src/agents/pi-embedded-runner/run/attempt-http-runtime.ts
@@ -0,0 +1,11 @@
+import {
+  ensureGlobalUndiciEnvProxyDispatcher,
+  ensureGlobalUndiciStreamTimeouts,
+} from "../../../infra/net/undici-global-dispatcher.js";
+
+export function configureEmbeddedAttemptHttpRuntime(params: { timeoutMs: number }): void {
+  // Proxy bootstrap must happen before timeout tuning so the timeouts wrap the
+  // active EnvHttpProxyAgent instead of being replaced by a bare proxy dispatcher.
+  ensureGlobalUndiciEnvProxyDispatcher();
+  ensureGlobalUndiciStreamTimeouts({ timeoutMs: params.timeoutMs });
+}
diff --git a/src/agents/pi-embedded-runner/run/attempt.spawn-workspace.timeout.test.ts b/src/agents/pi-embedded-runner/run/attempt.spawn-workspace.timeout.test.ts
index 6cefe21c187..625b2f0603f 100644
--- a/src/agents/pi-embedded-runner/run/attempt.spawn-workspace.timeout.test.ts
+++ b/src/agents/pi-embedded-runner/run/attempt.spawn-workspace.timeout.test.ts
@@ -1,41 +1,28 @@
-import { afterEach, beforeEach, describe, expect, it } from "vitest";
-import {
-  cleanupTempPaths,
-  createContextEngineAttemptRunner,
-  getHoisted,
-  resetEmbeddedAttemptHarness,
-} from "./attempt.spawn-workspace.test-support.js";
+import { beforeEach, describe, expect, it, vi } from "vitest";
 
-const hoisted = getHoisted();
+const mocks = vi.hoisted(() => ({
+  ensureGlobalUndiciEnvProxyDispatcher: vi.fn(),
+  ensureGlobalUndiciStreamTimeouts: vi.fn(),
+}));
+
+vi.mock("../../../infra/net/undici-global-dispatcher.js", () => ({
+  ensureGlobalUndiciEnvProxyDispatcher: mocks.ensureGlobalUndiciEnvProxyDispatcher,
+  ensureGlobalUndiciStreamTimeouts: mocks.ensureGlobalUndiciStreamTimeouts,
+}));
+
+import { configureEmbeddedAttemptHttpRuntime } from "./attempt-http-runtime.js";
 
 describe("runEmbeddedAttempt undici timeout wiring", () => {
-  const tempPaths: string[] = [];
-
   beforeEach(() => {
-    resetEmbeddedAttemptHarness();
+    mocks.ensureGlobalUndiciEnvProxyDispatcher.mockReset();
+    mocks.ensureGlobalUndiciStreamTimeouts.mockReset();
   });
 
-  afterEach(async () => {
-    await cleanupTempPaths(tempPaths);
-  });
+  it("forwards the configured run timeout into global undici stream tuning", () => {
+    configureEmbeddedAttemptHttpRuntime({ timeoutMs: 123_456 });
 
-  it("forwards the configured run timeout into global undici stream tuning", async () => {
-    await createContextEngineAttemptRunner({
-      sessionKey: "agent:main:ollama-timeout-test",
-      tempPaths,
-      contextEngine: {
-        assemble: async ({ messages }) => ({
-          messages,
-          estimatedTokens: 1,
-        }),
-      },
-      attemptOverrides: {
-        timeoutMs: 123_456,
-      },
-    });
-
-    expect(hoisted.ensureGlobalUndiciEnvProxyDispatcherMock).toHaveBeenCalledOnce();
-    expect(hoisted.ensureGlobalUndiciStreamTimeoutsMock).toHaveBeenCalledWith({
+    expect(mocks.ensureGlobalUndiciEnvProxyDispatcher).toHaveBeenCalledOnce();
+    expect(mocks.ensureGlobalUndiciStreamTimeouts).toHaveBeenCalledWith({
       timeoutMs: 123_456,
     });
   });
diff --git a/src/agents/pi-embedded-runner/run/attempt.ts b/src/agents/pi-embedded-runner/run/attempt.ts
index c05d3a155cf..5b77dbf1884 100644
--- a/src/agents/pi-embedded-runner/run/attempt.ts
+++ b/src/agents/pi-embedded-runner/run/attempt.ts
@@ -12,10 +12,6 @@ import { resolveChannelCapabilities } from "../../../config/channel-capabilities
 import { formatErrorMessage } from "../../../infra/errors.js";
 import { resolveHeartbeatSummaryForAgent } from "../../../infra/heartbeat-summary.js";
 import { getMachineDisplayName } from "../../../infra/machine-name.js";
-import {
-  ensureGlobalUndiciEnvProxyDispatcher,
-  ensureGlobalUndiciStreamTimeouts,
-} from "../../../infra/net/undici-global-dispatcher.js";
 import { MAX_IMAGE_BYTES } from "../../../media/constants.js";
 import {
   isOllamaCompatProvider,
@@ -186,6 +182,7 @@ import { splitSdkTools } from "../tool-split.js";
 import { mapThinkingLevel } from "../utils.js";
 import { flushPendingToolResultsAfterIdle } from "../wait-for-idle-before-flush.js";
 export { buildContextEnginePromptCacheInfo } from "./attempt.context-engine-helpers.js";
+import { configureEmbeddedAttemptHttpRuntime } from "./attempt-http-runtime.js";
 import {
   assembleAttemptContextEngine,
   buildLoopPromptCacheInfo,
@@ -423,10 +420,7 @@ export async function runEmbeddedAttempt(
 ): Promise<EmbeddedRunAttemptResult> {
   const resolvedWorkspace = resolveUserPath(params.workspaceDir);
   const runAbortController = new AbortController();
-  // Proxy bootstrap must happen before timeout tuning so the timeouts wrap the
-  // active EnvHttpProxyAgent instead of being replaced by a bare proxy dispatcher.
-  ensureGlobalUndiciEnvProxyDispatcher();
-  ensureGlobalUndiciStreamTimeouts({ timeoutMs: params.timeoutMs });
+  configureEmbeddedAttemptHttpRuntime({ timeoutMs: params.timeoutMs });
 
   log.debug(
     `embedded run start: runId=${params.runId} sessionId=${params.sessionId} provider=${params.provider} model=${params.modelId} thinking=${params.thinkLevel} messageChannel=${params.messageChannel ?? params.messageProvider ?? "unknown"}`,