feat: 添加更新卡片提醒样式和测试

sidepanel/sidepanel.css

@@ -523,6 +523,18 @@ header {
   line-height: 1.6;
 }
 
+.update-card-reminder {
+  margin: 0;
+  padding: 8px 10px;
+  border: 1px solid color-mix(in srgb, var(--orange) 28%, var(--border));
+  border-radius: var(--radius-sm);
+  background: color-mix(in srgb, var(--orange-soft) 70%, var(--bg-base));
+  color: var(--orange);
+  font-size: 12px;
+  font-weight: 700;
+  line-height: 1.5;
+}
+
 .update-release-list {
   display: flex;
   flex-direction: column;

sidepanel/sidepanel.html

@@ -100,6 +100,7 @@
         </div>
         <button id="btn-open-release" class="btn btn-primary btn-sm" type="button">前往更新</button>
       </div>
+      <p class="update-card-reminder">请更新前导出配置</p>
       <div id="update-release-list" class="update-release-list"></div>
     </div>
   </section>
@@ -816,4 +817,4 @@
   <script src="sidepanel.js"></script>
 </body>
 
-</html>
+</html>