Use cmd shell for Windows steps; powershell is blocked by execution policy under SYSTEM

.gitea/workflows/release.yaml

@@ -10,22 +10,22 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos, windows, linux]
+        include:
+          - os: macos
+            shell: bash
+          - os: windows
+            shell: cmd
+          - os: linux
+            shell: bash
     runs-on: ${{ matrix.os }}
     steps:
       # Plain git clone instead of actions/checkout (a JS action that would
       # require node on the host). Full history so setuptools_scm sees tags.
       # ${{ }} expressions are substituted by the runner, so both shells work.
+      # Windows uses cmd: bash resolves to WSL (refuses SYSTEM accounts) and
+      # powershell hits the script execution policy under SYSTEM.
       - name: Checkout
-        if: matrix.os != 'windows'
-        shell: bash
-        run: |
-          git clone "${{ gitea.server_url }}/${{ gitea.repository }}.git" .
-          git checkout -f "${{ gitea.sha }}"
-
-      - name: Checkout (Windows)
-        if: matrix.os == 'windows'
-        shell: powershell
+        shell: ${{ matrix.shell }}
         run: |
           git clone "${{ gitea.server_url }}/${{ gitea.repository }}.git" .
           git checkout -f "${{ gitea.sha }}"
@@ -41,12 +41,13 @@ jobs:
 
       - name: Install Node.js (Windows)
         if: matrix.os == 'windows'
-        shell: powershell
+        shell: cmd
         run: |
           uv tool install nodejs-wheel
-          Add-Content $env:GITHUB_PATH "$env:USERPROFILE\.local\bin"
+          echo %USERPROFILE%\.local\bin>>"%GITHUB_PATH%"
 
       - name: Build GUI app zip and dist packages
+        shell: ${{ matrix.shell }}
         run: uv run --extra gui scripts/guibuild.py
 
       # Every platform converges on the one release for the tag; release.py
@@ -54,12 +55,14 @@ jobs:
       # Only the linux job publishes the wheel/sdist (identical across platforms).
       - name: Create Gitea release and upload assets
         if: matrix.os == 'linux'
+        shell: ${{ matrix.shell }}
         env:
           GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
         run: uv run scripts/release.py
 
       - name: Attach platform artifact to the Gitea release
         if: matrix.os != 'linux'
+        shell: ${{ matrix.shell }}
         env:
           GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
         run: uv run scripts/release.py --no-dist