fix: 发送消息后清空上下文文件列表

修复了发送消息后上下文文件仍然显示在输入框中的问题。

   - 在 sendMessage() 函数中添加 clearContextItems() 调用
   - 调整脚本加载顺序，确保 contextDisplay 在 contextButton 之前初始化

src/views/userInfoComponent.ts

@@ -26,16 +26,16 @@ export function getUserInfoComponentContent(): string {
               </div>
             </div>
             <!-- 升级到Pro按钮 (仅BASIC会员显示) -->
-            <div class="upgrade-pro-wrapper" id="upgradeProWrapper" style="display: none;">
+            <!-- <div class="upgrade-pro-wrapper" id="upgradeProWrapper" style="display: none;">
               <button class="upgrade-pro-btn" id="upgradeProBtn">升级到 Pro</button>
-            </div>
+            </div> -->
           </div>
 
           <div class="user-detail-body">
-            <div class="user-detail-item">
+            <!-- <div class="user-detail-item">
               <span class="detail-label">剩余 Credits</span>
               <span class="detail-value" id="creditsDetail">-</span>
-            </div>
+            </div> -->
             <div class="user-detail-item logout-item" id="logoutItem">
               <span class="detail-label">账户管理</span>
               <span class="detail-value logout-link">退出登录</span>