add cleanup

.gitea/workflows/windows-setup.yml

@@ -26,3 +26,10 @@ jobs:
         shell: cmd
         run: |
           call Setup.bat
+
+      - name: Cleanup
+        shell: cmd
+        run: |
+          attrib -h -s "%GITHUB_WORKSPACE%\*" /s /d 2>nul
+          del /f /q /s /a "%GITHUB_WORKSPACE%\*" 2>nul
+          for /d %%D in ("%GITHUB_WORKSPACE%\*") do rd /s /q "%%D"