# Checklist

- [x] Air APP window code does not call fused desktop bottom-most APIs.
- [x] Air APP window code does not set `Topmost = true`.
- [x] Fused desktop overlay and widget windows still use bottom-most APIs.
- [x] Fused desktop widget reload path refreshes desktop layer after showing.
- [ ] Manual Windows z-order verification with fused desktop and Air APP windows.