- Added cleanup for dist/ directory Debian files (moved by build.sh)
- Added cleanup for root directory Debian files (fallback)
- Added cleanup for wssshtools/debian/ build artifacts:
  - debian/wsssh-tools/ build directory
  - debian/files
  - debian/*.debhelper* files
  - debian/*.substvars files
  - debian/debhelper-build-stamp
- Ensures complete cleanup of all Debian packaging artifacts
- Maintains existing cleanup for PyInstaller and C build artifacts