Social login callback

Internal redirect target used by Google, Apple, Microsoft, and Facebook sign-in.

This is an internal callback page used during social sign-in. The OAuth provider redirects here, the page sends the result back to the login window, and the popup closes itself. You don't interact with this page directly.

1
(no interactive controls)
The page only displays a spinner and message ("Completing sign-in…") while the OAuth result is relayed to the opener window.