feat(desktop): add toggle to disable auto-update checks

src/app/features/settings/desktop/Desktop.test.tsx

@@ -67,7 +67,7 @@
 });
 
 describe('Desktop', () => {
   const renderDesktop = () =>
     render(
       <ScreenSizeProvider value={ScreenSize.Desktop}>
         <Desktop requestClose={vi.fn<() => void>()} />
@@ -93,7 +93,7 @@
         'Show a system tray icon while Sable is running. Disable this if you want Sable to stay available without a tray icon.'
       )
     ).toBeInTheDocument();
-    expect(container.getElementsByClassName(SequenceCardStyle)).toHaveLength(2);
+    expect(container.getElementsByClassName(SequenceCardStyle)).toHaveLength(3);
   });
 
   it('shows fallback copy while the tray icon is enabled but unavailable', () => {

src/app/features/settings/desktop/Desktop.tsx

@@ -1,5 +1,7 @@
 import { isTauri } from '@tauri-apps/api/core';
+import { useAtom } from 'jotai';
 import { Box, Text, Scroll, Switch, color } from 'folds';
+import { autoUpdateCheckAtom } from '$state/autoUpdateCheck';
 import { PageContent } from '$components/page';
 import { SequenceCard } from '$components/sequence-card';
 import { SettingTile } from '$components/setting-tile';
@@ -26,6 +28,7 @@ export function Desktop({ requestBack, requestClose }: DesktopProps) {
     'closeToBackgroundOnClose'
   );
   const [showSystemTrayIcon, setShowSystemTrayIcon] = useDesktopSetting('showSystemTrayIcon');
+  const [autoUpdateCheck, setAutoUpdateCheck] = useAtom(autoUpdateCheckAtom);
 
   if (!isTauri() || !ready) return null;
 
@@ -93,6 +96,28 @@ export function Desktop({ requestBack, requestClose }: DesktopProps) {
                   </SequenceCard>
                 )}
               </Box>
+              <Box direction="Column" gap="100">
+                <Text size="L400">Updates</Text>
+                <SequenceCard
+                  className={SequenceCardStyle}
+                  variant="SurfaceVariant"
+                  direction="Column"
+                  gap="400"
+                >
+                  <SettingTile
+                    title="Automatically check for updates"
+                    focusId="auto-update-check"
+                    description="Check GitHub for a new release on launch. Turn off to avoid contacting GitHub."
+                    after={
+                      <Switch
+                        aria-label="auto-update-check"
+                        value={autoUpdateCheck}
+                        onChange={setAutoUpdateCheck}
+                      />
+                    }
+                  />
+                </SequenceCard>
+              </Box>
             </Box>
           </PageContent>
         </Scroll>

src/app/pages/client/DesktopUpdater.tsx

@@ -1,6 +1,8 @@
 import { useEffect } from 'react';
+import { useAtomValue } from 'jotai';
 import { isTauri } from '@tauri-apps/api/core';
 import { type as osType } from '@tauri-apps/plugin-os';
+import { autoUpdateCheckAtom } from '$state/autoUpdateCheck';
 import { createLogger } from '$utils/debug';
 
 const log = createLogger('DesktopUpdater');
@@ -37,10 +39,13 @@ async function checkForDesktopUpdate(): Promise<void> {
 }
 
 export function DesktopUpdater() {
+  const autoUpdateCheck = useAtomValue(autoUpdateCheckAtom);
+
   useEffect(() => {
     if (!isDesktopTauri()) return;
+    if (!autoUpdateCheck) return;
     checkForDesktopUpdate().catch((err) => log.error('update check failed', err));
-  }, []);
+  }, [autoUpdateCheck]);
 
   return null;
 }

src/app/state/autoUpdateCheck.ts

@@ -0,0 +1,13 @@
+import {
+  atomWithLocalStorage,
+  getLocalStorageItem,
+  setLocalStorageItem,
+} from './utils/atomWithLocalStorage';
+
+const AUTO_UPDATE_CHECK_KEY = 'autoUpdateCheck';
+
+export const autoUpdateCheckAtom = atomWithLocalStorage<boolean>(
+  AUTO_UPDATE_CHECK_KEY,
+  (key) => getLocalStorageItem<boolean>(key, true),
+  (key, value) => setLocalStorageItem(key, value)
+);