Symfony FormLoginAuthenticator expects _username by default.
The field used name="email" which caused 400 Bad Request on submit.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Validates current password, enforces 8-char minimum, links from
EasyAdmin user menu. Also fixes route loader (attribute scan instead
of broken easyadmin.routes type).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>