It only ever loaded the page and asserted the banner, never a password
save — but its name claimed the crash-on-save case, which is exactly the
promise that let that bug ship unnoticed once. The test that earns the
crash claim is its new neighbour, added for the same finding.
EditMailbox::save() now checks SecretCipher::isUsable() before touching a
typed password and reports it as a form error, instead of letting
SecretCipher::encrypt() throw all the way to Laravel's debug page. Also
switches the mail.manage migration to Role::findOrCreate, matching every
sibling capability migration, so a squashed replay can't hit
RoleDoesNotExist.
nexxo