chore: update artifact

Author: jose-rZM

.github/workflows/main.yml

@@ -221,11 +221,12 @@ jobs:
           ditto -c -k --keepParent SyntaxTutor.app SyntaxTutor.zip
 
       - name: Upload artifacts
+        run: |
+          zip -qry SyntaxTutor-macos-arm64.zip SyntaxTutor.app
         uses: actions/upload-artifact@v4
         with:
           name: SyntaxTutor-macos-arm64
-          path: |
-            SyntaxTutor.app
+          path: SyntaxTutor-macos-arm64.zip
 
   build-windows:
     runs-on: windows-latest
@@ -265,11 +266,15 @@ jobs:
           Copy-Item .\release\SyntaxTutor.exe deploy\
           windeployqt --release .\deploy\SyntaxTutor.exe --dir deploy
 
-      - name: Upload Windows ZIP
+      - name: Zip Windows bundle
+        run: powershell Compress-Archive -Path deploy -DestinationPath SyntaxTutor-windows-x64.zip
+
+      - name: Upload zipped Windows bundle
         uses: actions/upload-artifact@v4
         with:
           name: SyntaxTutor-windows-x64
-          path: deploy
+          path: SyntaxTutor-windows-x64.zip
+
 
   build-linux:
     runs-on: ubuntu-latest
@@ -327,6 +332,7 @@ jobs:
           path: '*.AppImage'
 
   publish-prerelease:
+    if: github.ref == 'refs/heads/main'
     name: Publish prerelease
     runs-on: ubuntu-latest
     needs: