feat(mac): surface update-ready state

apps/macos/Sources/Clawdis/AboutSettings.swift

@@ -92,10 +92,12 @@ struct AboutSettings: View {
             guard let updater, !self.didLoadUpdaterState else { return }
             // Keep Sparkle’s auto-check setting in sync with the persisted toggle.
             updater.automaticallyChecksForUpdates = self.autoCheckEnabled
+            updater.automaticallyDownloadsUpdates = self.autoCheckEnabled
             self.didLoadUpdaterState = true
         }
         .onChange(of: self.autoCheckEnabled) { _, newValue in
             self.updater?.automaticallyChecksForUpdates = newValue
+            self.updater?.automaticallyDownloadsUpdates = newValue
         }
     }