test: inspect shopware-cli zip internal structure

.gitea/workflows/swcli-probe.yml

@@ -0,0 +1,22 @@
+name: zip-structure-probe
+on:
+  push:
+    branches: [ci/zip-structure-probe]
+
+jobs:
+  probe:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install shopware-cli
+        run: |
+          curl -sL -o /tmp/shopware-cli.tar.gz \
+            https://github.com/shopware/shopware-cli/releases/latest/download/shopware-cli_Linux_x86_64.tar.gz
+          mkdir -p /tmp/swcli-extract
+          tar -xzf /tmp/shopware-cli.tar.gz -C /tmp/swcli-extract
+          cp /tmp/swcli-extract/shopware-cli /usr/local/bin/shopware-cli
+      - name: Package and inspect zip structure
+        run: |
+          shopware-cli extension package . --output-directory .build --filename probe.zip
+          echo "=== zip internal listing ==="
+          unzip -l .build/probe.zip | head -20