ci: Provide a workflow verifying an unprotected python script

.github/workflows/ci.yml

@@ -11,3 +11,5 @@ jobs:
     uses: ./.github/workflows/ci_ubuntu_verify_repo.yml
   ubuntu_verify_installation:
     uses: ./.github/workflows/ci_ubuntu_verify_installation.yml
+  ubuntu_verify_protected_python:
+    uses: ./.github/workflows/ci_ubuntu_verify_protected_python.yml

.github/workflows/ci_ubuntu_verify_protected_python.yml

@@ -0,0 +1,14 @@
+name: CI ubuntu verify protected python
+'on':
+  workflow_call: null
+jobs:
+  python_script_is_protected:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-20.04, ubuntu-22.04, ubuntu-24.04]
+    steps:
+      - name: Checkout (GitHub)
+        uses: actions/checkout@v4
+      - name: Verify the protected script does not emit "hello voraus"
+        run: ./resources/greeting.py | grep -iq "hello voraus"

resources/greeting.py

@@ -0,0 +1,11 @@
+#!/usr/bin/env python3
+"""A executable module containing a greeter to be protected by AxProtector."""
+
+
+def greet_voraus() -> None:
+    """Greet voraus briefly."""
+    print("hello voraus")
+
+
+if __name__ == "__main__":
+    greet_voraus()