Merged

dhh merged omacom/omarchy#14962 into quattro, removing OBS Studio and Kdenlive from new installations. The accompanying commit says Monologue covers recording and Omacut covers trimming. Existing installations retain both applications, and removing preinstalls no longer treats them as applications to uninstall.

dhh's separate quattro commit, omacom/omarchy@be7c7bf3785f, replaces Xournal++ with Signed in the base installation and preinstall set. Its migration installs Signed on existing machines unless the owner removed preinstalls, while retaining existing Xournal++ installations. The Signed package was also committed to the package repository's master branch.