feat(scenarios): 兼容非法配置并展示错误摘要

templates/scenarios/index.html

@@ -9,6 +9,21 @@
     <p class="page-lead">当前首页直接读取 YAML 场景配置。你可以从这里进入对话、上传资料，再用审计日志验证整条执行链路。</p>
   </header>
 
+  {% if scenario_issues %}
+    <section class="panel" style="margin-bottom: 20px;">
+      <h2 class="section-title">配置异常</h2>
+      <p class="muted">以下 YAML 场景文件存在问题，系统已自动跳过，不会影响其它合法场景展示。</p>
+      <ul class="detail-list">
+        {% for issue in scenario_issues %}
+          <li class="detail-item">
+            <strong>{{ issue.file_name }}</strong>
+            <div>{{ issue.message }}</div>
+          </li>
+        {% endfor %}
+      </ul>
+    </section>
+  {% endif %}
+
   <section class="card-grid">
     {% for scenario in scenarios %}
       <article class="card">