Integrate MAS with Synapse

mas/share/templates/pages/device_link.html

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+{#
+Copyright 2024, 2025 New Vector Ltd.
+Copyright 2023, 2024 The Matrix.org Foundation C.I.C.
+
+SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE files in the repository root for full details.
+-#}
+
+{% extends "base.html" %}
+
+{% block content %}
+  <header class="page-heading">
+    <div class="icon">
+      {{ icon.link() }}
+    </div>
+
+    <div class="header">
+      <h1 class="title">{{ _("mas.device_code_link.headline") }}</h1>
+      <p class="text">{{ _("mas.device_code_link.description") }}</p>
+    </div>
+  </header>
+
+  <form method="GET" class="cpd-form-root">
+    {% call(f) field.field(label="Device code", name="code", class="mb-4 self-center", form_state=form_state) %}
+      <div class="cpd-mfa-container">
+        <input {{ field.attributes(f) }}
+          id="mfa-code-input"
+          type="text"
+          minlength="0"
+          maxlength="6"
+          class="cpd-mfa-control uppercase"
+          required>
+
+        {% for _ in range(6) %}
+        <div class="cpd-mfa-digit" aria-hidden="true"></div>
+        {% endfor %}
+      </div>
+    {% endcall %}
+
+    {{ button.button(text=_("action.continue")) }}
+  </form>
+{% endblock content %}