Logto needs client_id to validate the post_logout_redirect_uri and
auto-redirect back to the app. Without it, user gets stuck on
Logto's end-session success page.
Note: post_logout_redirect_uri must be registered in Logto Console
under the app's "Post sign-out redirect URIs".
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>