auth pages (login, registration, confirmation, recover) now use
setup-page/setup-header/admin-btn-block. theme toggle indicator
gets proper CSS. cleaned up dead h-full, size-3.5, ml-2 classes.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
When email isn't configured, the login page now hides the magic link
form and shows a recovery link. The /recover page logs the setup secret
to server logs and lets the admin reset their password with it.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>