remove UI split (legacy/modern)

flask_app/app/templates/tests/editor.html

@@ -3,7 +3,7 @@
 
 {% block content %}
 <div id="editor-root"
-     class="space-y-4 sm:space-y-5 pb-24 {% if ui_variant == 'legacy' %}test-detail-page test-detail-page--with-fixed-actions{% endif %}"
+     class="space-y-4 sm:space-y-5 pb-24 test-detail-page test-detail-page--with-fixed-actions"
      data-test-id="{{ test_id }}"
      data-initial='{{ content | tojson | safe }}'>
 
@@ -277,7 +277,7 @@
 {# ── Sticky-footer: «Цепочка активна» + «Сохранить» ────────────── #}
 <div class="fixed bottom-0 inset-x-0 z-30 bg-white/95 backdrop-blur border-t border-ink-300/60
             pb-[env(safe-area-inset-bottom)]">
-  <div class="mx-auto {% if ui_variant == 'legacy' %}max-w-2xl{% else %}max-w-6xl{% endif %} px-4 py-3
+  <div class="mx-auto max-w-2xl px-4 py-3
               flex items-center justify-between gap-3">
     <div id="intro-fork-banner" class="callout callout--warning text-xs sm:text-sm"
          data-fork-risk="{{ '1' if content.test.hasForkRisk else '0' }}"
@@ -297,7 +297,7 @@
       </button>
     </div>
   </div>
-  <p id="save-status" class="mx-auto {% if ui_variant == 'legacy' %}max-w-2xl{% else %}max-w-6xl{% endif %} px-4 pb-2 text-xs text-ink-500"></p>
+  <p id="save-status" class="mx-auto max-w-2xl px-4 pb-2 text-xs text-ink-500"></p>
 </div>
 
 {# ── Шаблон вопроса ─────────────────────────────────────────────── #}