Sign In and "Sign in with a passkey" (btn-accent) now sit side by side with
"Remember Me" on the same row, and the email/password block is given room above
and below.
The passkey button was dead. It submits a *different* form -- the hidden
`mfa_login` that allauth renders from its `extra_body` block -- and our layout
base never defined that block, so neither the form nor the webauthn script was
ever emitted and clicking the button did nothing. _base.html now has the block,
and there is a test asserting the form and script are on the page.
The `fields` element grows an `exclude`, so a page can lay a field out itself
(here: "remember", moved onto the button row). It splits on commas rather than
testing for a substring -- "password" is a substring of "password2", and a page
excluding one would otherwise silently drop the other.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Bernard Siebens
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