Add an EmailLayout component (replace abandoned enabel/layout-bundle email base)

[damienlagae]

Context

enabel/layout-bundle shipped @EnabelLayout/emails/base.html.twig — a table-based outer wrapper with Enabel footer (address + "Responses to this e-mail will not be read." + © year). Every project that sent emails extended this template.

Now that the bundle is abandoned, each project copies the same ~100-line HTML+inline-CSS file to internalize. Observed:

• Impala — templates/emails/base.html.twig, copy of the bundle template (PR #2138)

This is a perfect candidate for an enabel/ux component, since the markup is fully reusable and the only inputs are translation keys for the footer text.

Proposed API

final class EmailLayout
{
    public ?string $logo = '@images/enabel-logo-email.png';   // any Twig namespace
    public string $address = 'Belgian Development Agency';
    public string $addressLine = 'Rue Haute 147 - 1000 Brussels';
    public ?string $noreply = 'Responses to this e-mail will not be read.';
    public ?int $copyrightYear = null;                         // defaults to date('Y')
    public string $copyrightHolder = 'Enabel';
}

The component exposes a {% block content %} block for the email body. Inline images use the Symfony Mailer email.image() helper, so the project just needs to register the corresponding Twig namespace (e.g. @images → public/images).

Example usage

{# templates/emails/password_reset.html.twig #}
{% component 'Enabel:Ux:EmailLayout' with {
    noreply: 'app.email.noreply'|trans,
} %}
    {% block content %}
        <tr><td class="wrapper">
            <p>Dear {{ user.displayName }},</p>
            <p>You requested a password reset…</p>
            <p><a href="{{ url('app_reset_password', { token: resetToken.token }) }}">Reset password</a></p>
        </td></tr>
    {% endblock %}
{% endcomponent %}

Pre-requisite

Email components have to be table-based with inline styles. The current bundle template is already that — just lift it into enabel/ux and parameterize the footer pieces.

The current template uses email.image('@EnabelLayoutImages/enabel-logo-email.png') which depends on the bundle's path mapping. After internalization that becomes @images/... and apps register their own Twig path. Worth documenting in the component's README.