The CMake block listed calc_wrap_qt_glue.h and calc_wrap_dispatch.cpp in
logos_module(SOURCES …). Those were emitted by --backend qt, which is deleted;
a module now emits <name>_cdylib_glue.{h,cpp} and Qt-plugin packaging is a
downstream step.
Nothing goes red — logos-tutorial has no dev-boost doctest — so this would have
stayed wrong silently. It was likely already stale (logos-dev-boost contains no
_qt_glue string at all), but the deletion turns "out of date" into "permanently
unbuildable", which the Tutorial Sync Rule exists to prevent.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
