fix(auth): scope signOut to local session only

packages/shared/src/auth/magic-link.ts

@@ -86,7 +86,11 @@ export async function completeSessionFromUrl(
 }
 
 export async function signOut(client: AppSupabaseClient): Promise<void> {
-  const { error } = await client.auth.signOut();
+  // `scope: 'local'` only ends the session in THIS client. Without it Supabase
+  // defaults to 'global', which invalidates the user's refresh tokens
+  // everywhere — meaning a logout in the browser would also kick the desktop
+  // app (and vice versa) the next time it tries to refresh its token.
+  const { error } = await client.auth.signOut({ scope: 'local' });
   if (error) throw error;
 }