This package is the GTK4/libadwaita control-plane boundary. Its pages are General, Voice, Models, Memory, Skills, Computer use, Privacy, Lab, and About. The daemon remains the owner of QVAC, audio, portals, and the harness. The implemented main.py application uses libadwaita NavigationSplitView, stores preferences under ~/.config/jarvis/config.json, and communicates with the daemon over session D-Bus. Start it with npm run --workspace @jarvis-qvac/control-center start.