- hyprland/actions.go: add missing return after nil check to prevent panic
- repo/actions.go: replace os.Exit with proper error return
- config/dbus.go: return error instead of log.Fatalf for graceful handling
- hyprland/keyboard-actions.go: add nil check for DBusConn
- main.go: handle InitDBus error gracefully
- system/commands.go: use descriptive error message instead of empty string