Harden tests that time out on busy Windows runners

Rush 5.181.0 fixed the critical-path priority in AsyncOperationQueue. `rush retest`
now runs the test operations after the builds, so the heaviest suites overlap at the
end of CI, and some tests run twice as slowly on the 4-vCPU Windows runners.

- NativeBuildTestFixture: raise the daemon idle timeout from 30 s to 600 s. The timer
  counts from the end of the last request, and a status ping doesn't reset it, so a
  slow gap let the daemon exit between two requests of a test. closeAsync() still
  stops the daemon.
- RushProjectConfiguration and PhasedCommandEngineAbort tests: 30 s timeout, not 5 s.
- OutputFolderDigester threshold test: give the serial digester a 60 s threshold, so a
  slow digest can't start its pool.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 2fdae5a5-bbb9-4f39-a3e0-c0d21203e97a

Author: TheLarkInn

apps/rush-cli-client/src/test/NativeBuildTestFixture.ts

@@ -66,7 +66,10 @@ export function createNativeBuildTestFixture(): INativeBuildTestFixture {
       rushVersion: Rush.version,
       suppressNodeLtsWarning: true,
       npmVersion: '10.0.0',
-      daemon: { enabled: true, autoStart: true, idleTimeoutSeconds: 30 },
+      // The idle timer counts from the end of the last request; a status ping doesn't reset it. A busy
+      // Windows runner can leave more than 30 s between a test's requests, and a new daemon then serves the
+      // next one. closeAsync() stops the daemon.
+      daemon: { enabled: true, autoStart: true, idleTimeoutSeconds: 600 },
       projectFolderMinDepth: 1,
       projects: ['a', 'b'].map((name) => ({ packageName: name, projectFolder: name }))
     })

common/changes/@microsoft/rush/automated-bump-decoupled-deps_2026-10-06-11-53.json

@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "@microsoft/rush",
+      "comment": "",
+      "type": "none"
+    }
+  ],
+  "packageName": "@microsoft/rush",
+  "email": "3408176+TheLarkInn@users.noreply.github.com"
+}

common/changes/@rushstack/rush-cli-client/automated-bump-decoupled-deps_2026-10-06-11-53.json

@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "@rushstack/rush-cli-client",
+      "comment": "",
+      "type": "none"
+    }
+  ],
+  "packageName": "@rushstack/rush-cli-client",
+  "email": "3408176+TheLarkInn@users.noreply.github.com"
+}

common/changes/@rushstack/rush-daemon/automated-bump-decoupled-deps_2026-10-06-11-53.json

@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "@rushstack/rush-daemon",
+      "comment": "",
+      "type": "none"
+    }
+  ],
+  "packageName": "@rushstack/rush-daemon",
+  "email": "3408176+TheLarkInn@users.noreply.github.com"
+}

libraries/rush-daemon/src/test/OutputFolderDigestPool.test.ts

@@ -418,7 +418,11 @@ describe(OutputFolderDigester.name, () => {
 
   it('starts a pool only after a digest on the calling thread takes longer than the threshold', () => {
     const folderSets: IOutputFolderSet[] = createProjects(root);
-    const serial: OutputFolderDigester = new OutputFolderDigester({ threadCount: 2 });
+    // A threshold that no digest of these small folders reaches, even on a busy machine.
+    const serial: OutputFolderDigester = new OutputFolderDigester({
+      threadCount: 2,
+      poolStartThresholdMs: 60_000
+    });
     expect(serial.digest(folderSets)).toEqual(digestOnCallingThread(folderSets));
     expect(serial.isParallel).toBe(false);
 

libraries/rush-daemon/src/test/PhasedCommandEngineAbort.test.ts

@@ -15,6 +15,10 @@ import { NoOpTerminalProvider } from '@rushstack/terminal';
 
 import { DaemonGraphTestFixture } from './DaemonGraphTestFixture';
 
+// Each case creates a Git repository and loads a real Rush configuration, which can take more than the
+// default 5 s on a busy Windows runner.
+jest.setTimeout(30_000);
+
 const STEP_PREFIX: string = 'rush:phasedScriptAction:';
 
 /** The steps that the native preparation measures for the fixture's `build`, in their order. */

libraries/rush-lib/src/api/test/RushProjectConfiguration.test.ts

@@ -14,6 +14,10 @@ import type { RushConfigurationProject } from '../RushConfigurationProject';
 import { RushProjectConfiguration } from '../RushProjectConfiguration';
 import { PhasedCommandEngineProjectConfigurationError } from '../PhasedCommandEngineProjectConfigurationError';
 
+// Several cases write, link and stat many files, which can take more than the default 5 s on a busy
+// Windows runner.
+jest.setTimeout(30_000);
+
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
 function stripSymbolsFromObject(obj: any | undefined): void {
   if (obj) {