style: 移除标题栏的重复API下拉菜单，只保留浮动面板

core/templates/core/public_content.html

@@ -140,33 +140,13 @@ function toggleApiPanel() {
     <h2 class="mb-0">
         <i class="bi bi-globe me-2 text-info"></i>公开内容
     </h2>
-    <div class="d-flex align-items-center gap-3">
-        <div class="dropdown">
-            <button class="btn btn-outline-secondary btn-sm dropdown-toggle" type="button" data-bs-toggle="dropdown">
-                <i class="bi bi-cloud-arrow-up me-1"></i>API上传
-            </button>
-            <ul class="dropdown-menu dropdown-menu-end p-3" style="min-width: 350px;">
-                <li>
-                    <h6 class="dropdown-header">临时文件上传 API</h6>
-                    <p class="small text-muted mb-2">端点: <code>POST /api/v1/temp-upload/</code></p>
-                    <hr>
-                    <p class="small mb-1"><strong>参数:</strong></p>
-                    <ul class="small mb-2">
-                        <li><code>title</code> - 文件标题</li>
-                        <li><code>file</code> - 文件(最大500MB)</li>
-                        <li><code>expire_type</code> - expire_1h / expire_1d / expire_7d</li>
-                    </ul>
-                    <p class="small mb-1"><strong>cURL示例:</strong></p>
-                    <pre class="small bg-dark text-white p-2 rounded"><code>curl -X POST -F "file=@f.pdf" -F "title=文件" -F "expire_type=expire_1d" /api/v1/temp-upload/</code></pre>
-                </li>
-            </ul>
-        </div>
-        {% if user.is_authenticated %}
+    {% if user.is_authenticated %}
+    <div>
         <a href="{% url 'add_public_content' %}" class="btn btn-primary">
             <i class="bi bi-plus-lg me-1"></i>添加内容
         </a>
-        {% endif %}
     </div>
+    {% endif %}
 </div>
 
 <!-- 临时发言区域 -->