Validate native AppLocker EXE event generation with an opt-in probe (#423)

* Add native AppLocker EXE event validation probe

* Reference PR 423 in changelogs

* Isolate AppLocker native fixture and preserve prerequisite diagnostics

* Report an integer zero for an empty AppLocker policy

* Prepare disposable AppLocker probe policy without bypassing production importer guards

* Retain bounded native AppLocker channel diagnostics on probe failure

* Require native policy application before the disposable AppLocker probe

* Preserve exact timestamp strings in native evidence fixtures

* Record actual runner session and AppLocker publication diagnostics

* Activate and restore the native policy converter on disposable AppLocker hosts

* Compare native task freshness without guessing its timestamp timezone

* Verify effective policy and borrowed converter inactivity during fixture cleanup

* Track the actual native policy-converter task instance instead of cached timestamps

.github/workflows/applocker-probe.yml

@@ -0,0 +1,34 @@
+name: Native AppLocker EXE probe
+on:
+  push:
+    branches: ['**']
+  pull_request:
+  workflow_dispatch:
+permissions:
+  contents: read
+jobs:
+  applocker-probe:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [windows-2022, windows-2025]
+        engine: [powershell, pwsh]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
+      - name: Fixtures in Windows PowerShell 5.1
+        if: matrix.engine == 'powershell'
+        shell: powershell
+        run: ./tests/AppLockerProbe.Tests.ps1
+      - name: Native probe in Windows PowerShell 5.1
+        if: matrix.engine == 'powershell'
+        shell: powershell
+        run: ./tests/AppLockerProbe.Windows.Tests.ps1 -AllowDisposablePolicyWrite
+      - name: Fixtures in PowerShell 7
+        if: matrix.engine == 'pwsh'
+        shell: pwsh
+        run: ./tests/AppLockerProbe.Tests.ps1
+      - name: Native probe in PowerShell 7
+        if: matrix.engine == 'pwsh'
+        shell: pwsh
+        run: ./tests/AppLockerProbe.Windows.Tests.ps1 -AllowDisposablePolicyWrite