Switching ``Buttons`` to ``width: 100%`` (in c32ad712) had a
side-effect — with ``FormWrapper`` sized to ``max-content``, a
100% child without LocalUserForm alongside it lets the card
collapse to the button's intrinsic text width. Per PR #1097 review,
go back to the 360px design width and rely on ``max-width: 100%``
to keep it from overflowing tighter parents (the enterprise cover
layout's 272px inner especially).
Apply the same shape to LocalUserForm — its hardcoded 360px alone
would still overflow on the cover layout — so the two surfaces
stay in lockstep when switching between SSO and password modes.
(Pre-commit hook still crashes on the ``context.getDeclaredVariables``
bug in main; unrelated.)
