When a bundled library is Qt WebEngine, the bundler also installs
QtWebEngineProcess (plus its libraries) to libexec/, the resources and
the en-US/de locales, and points qt.conf at them. The cross image unpacks
the arm64 QtWebEngineProcess (its package can't be co-installed with the
amd64 one). Experiment for DSH-1: the Frame's system WebEngine (6.7.0,
built against FFmpeg 6) can't be loaded.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>