8cd46751f9
FFTW is fetched and built by the jungfraujoch CMake (single-precision, from the release tarball), so the system fftw packages (fftw-static/fftw-devel on Rocky, libfftw3-dev on Ubuntu) were unused. Remove them from all four images. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>