fix: simplify Harbor secrets test - remove Docker commands

- Removed Docker login and image pull steps (Docker not available in runner)
- Added Harbor API authentication test using curl with basic auth
- Test now validates secrets are accessible and credentials work

.gitea/workflows/test-harbor-secrets.yml

@@ -60,39 +60,28 @@ jobs:
             echo "⚠️  Harbor registry returned non-200 status (might be auth required)"
           fi
 
-      - name: Test Docker login to Harbor
+      - name: Test Harbor API authentication
         run: |
-          echo "=== Testing Docker Login to Harbor ==="
+          echo "=== Testing Harbor API Authentication ==="
 
           if [ -z "${{ secrets.HARBOR_USERNAME }}" ] || [ -z "${{ secrets.HARBOR_PASSWORD }}" ]; then
-            echo "❌ Cannot test Docker login - secrets not set"
+            echo "❌ Cannot test Harbor API - secrets not set"
             exit 1
           fi
 
-          echo "${{ secrets.HARBOR_PASSWORD }}" | docker login $HARBOR_REGISTRY \
-            --username "${{ secrets.HARBOR_USERNAME }}" \
-            --password-stdin
+          # Test authenticated API call to Harbor
+          HTTP_CODE=$(curl -k -s -o /dev/null -w "%{http_code}" \
+            -u "${{ secrets.HARBOR_USERNAME }}:${{ secrets.HARBOR_PASSWORD }}" \
+            https://$HARBOR_REGISTRY/api/v2.0/projects)
 
-          if [ $? -eq 0 ]; then
-            echo "✅ Docker login to Harbor SUCCEEDED"
-            docker logout $HARBOR_REGISTRY
+          if [ "$HTTP_CODE" = "200" ]; then
+            echo "✅ Harbor API authentication SUCCEEDED (HTTP $HTTP_CODE)"
           else
-            echo "❌ Docker login to Harbor FAILED"
+            echo "❌ Harbor API authentication FAILED (HTTP $HTTP_CODE)"
+            echo "   This could mean credentials are incorrect or user lacks permissions"
             exit 1
           fi
 
-      - name: Test image pull
-        run: |
-          echo "=== Testing Image Pull from Harbor ==="
-
-          # Try to list repositories
-          echo "Attempting to pull hello-world to test registry access..."
-
-          # This will fail if no images exist, but tests connectivity
-          docker pull hello-world:latest || echo "Standard pull works"
-
-          echo "✅ Docker registry operations work"
-
       - name: Summary
         if: always()
         run: |