Review and apply query updates to existing disabled WEC subscriptions (#426)

* Add reviewed existing-only updates for disabled WEC subscriptions

* Pin loaded updater and flush locked recovery artifacts; reference PR 426

* Compare formatted WEC queries semantically before pinning raw native state

* Read native WEC subscription XML with bounded explicit Unicode pipes

* Use explicit Unicode reads for reviewed update and native cleanup

* Keep timestamp strings exact in inherited native evidence fixtures

* Reject XML-invalid descriptions before any native save

* Decode native WEC XML BOMs without unsupported Unicode switch

* Describe native XML byte decoding accurately

* Reference System.Xml explicitly when compiling under Windows PowerShell

.github/workflows/wec-update.yml

@@ -0,0 +1,40 @@
+name: Reviewed disabled WEC subscription updates
+on:
+  push:
+    branches: ['**']
+  pull_request:
+  workflow_dispatch:
+permissions:
+  contents: read
+jobs:
+  wec-update:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [windows-2022, windows-2025]
+        engine: [powershell, pwsh]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
+      - name: Guard and failure fixtures in Windows PowerShell 5.1
+        if: matrix.engine == 'powershell'
+        shell: powershell
+        run: |
+          ./tests/WecUpdate.Tests.ps1
+          ./tests/WecUpdate.Cli.Tests.ps1
+          ./tests/WecSubscriptionXml.Tests.ps1
+      - name: Actual disabled-subscription updates in Windows PowerShell 5.1
+        if: matrix.engine == 'powershell'
+        shell: powershell
+        run: ./tests/WecUpdate.Windows.Tests.ps1 -AllowDisposableSubscription
+      - name: Guard and failure fixtures in PowerShell 7
+        if: matrix.engine == 'pwsh'
+        shell: pwsh
+        run: |
+          ./tests/WecUpdate.Tests.ps1
+          ./tests/WecUpdate.Cli.Tests.ps1
+          ./tests/WecSubscriptionXml.Tests.ps1
+      - name: Actual disabled-subscription updates in PowerShell 7
+        if: matrix.engine == 'pwsh'
+        shell: pwsh
+        run: ./tests/WecUpdate.Windows.Tests.ps1 -AllowDisposableSubscription