- add fedora-44-mirrors ingredient and register it in the repository choices
- expand the desktop variant matrix to [43, 44, rawhide] (48 dishes)
- bump CI workflows and deploy fallback URL to Fedora 44
- cover both release repositories in tests
- deploy.sh now runs 'make all' in cook/ before deploying, since dishes
are build products no longer tracked in git; failures show the make
output and abort
- deploy-distro.sh selects dishes by the *guest-agents* marker (the new
naming replaced the virtual* prefix) and uses --os-variant
fedora-unknown instead of the stale fedora41 pin