Add smoke test for mac app

Author: Jaifroid

.github/workflows/build-electron.yml

@@ -227,6 +227,49 @@ jobs:
         else
           npx electron-builder --mac zip:x64 zip:arm64 --projectDir dist
         fi
+    - name: Test Electron app
+      run: |
+        echo "Extracting macOS app for testing..."
+        cd dist/bld/Electron
+        
+        # Find the first zip file (prefer x64 if available)
+        ZIP_FILE=$(ls -1 *.zip | head -1)
+        echo "Found zip file: $ZIP_FILE"
+        
+        # Extract the zip file
+        unzip -q "$ZIP_FILE"
+        
+        # Find the .app bundle
+        APP_BUNDLE=$(find . -name "*.app" -type d | head -1)
+        echo "Found app bundle: $APP_BUNDLE"
+        
+        if [ -z "$APP_BUNDLE" ]; then
+          echo "Error: No .app bundle found!"
+          exit 1
+        fi
+        
+        # Remove quarantine attribute (required for CI)
+        xattr -dr com.apple.quarantine "$APP_BUNDLE" || true
+        
+        # Start Electron app with CI-friendly flags
+        "$APP_BUNDLE/Contents/MacOS/Kiwix JS Electron" \
+          --headless \
+          --disable-gpu-sandbox \
+          --no-sandbox &
+        
+        APP_PID=$!
+        echo "Started app with PID: $APP_PID"
+        
+        # Wait for app to start
+        sleep 10
+        
+        # Take screenshot to verify app started
+        screencapture -x test-screenshot.png || echo "Screenshot failed (expected in CI)"
+        
+        # Kill app
+        kill $APP_PID || true
+        
+        echo "Smoke test completed successfully"
     - name: Upload packages to Kiwix
       if: github.event.inputs.target != 'artefacts' 
       run: |
@@ -241,6 +284,7 @@ jobs:
         name: kiwix-js-electron_macos
         path: |
           dist/bld/Electron/*.zip
+          dist/bld/Electron/test-screenshot.png
 
   Release_Windows:
     if: github.event.inputs.macosonly != 'true'