Improve auth and download UI states

templates/home.html

@@ -9,7 +9,7 @@
     <h1 class="text-3xl font-extrabold tracking-tight sm:text-4xl">管道健康状态与剩余寿命评估</h1>
     <p class="mt-2 max-w-3xl text-sm leading-6 text-textSub">上传标准数据文件，系统将生成管道的剩余寿命分析图、健康等级摘要、剩余寿命判断和电子表格预测报告。</p>
   </div>
-  <a href="{{ url_for('main.download_template') }}" class="ui-btn ui-btn-secondary text-primary">
+  <a href="{{ url_for('main.download_template') }}" class="ui-btn ui-btn-secondary text-primary" data-download-action data-download-pending="下载中...">
     <span class="material-symbols-outlined text-lg">download</span>
     下载数据模板
   </a>
@@ -74,7 +74,7 @@
               <span class="material-symbols-outlined text-lg">monitoring</span>
               查看结果页
             </a>
-            <a id="excelBtn" href="#" class="ui-btn ui-btn-sm ui-btn-primary">
+            <a id="excelBtn" href="#" class="ui-btn ui-btn-sm ui-btn-primary" data-download-action data-download-pending="下载中...">
               <span class="material-symbols-outlined text-lg">download</span>
               下载结果表
             </a>