fix: hide webapp list content while a webapp is open

app/src/main/assets/h5/css/app.css

@@ -476,6 +476,13 @@ body {
 
 /* webAPP 顶栏：浮层玻璃条 + 标签面板 */
 /* webapp topbar: floating glass bar + tab panel */
+/* 前台有 webapp 时隐藏 webapp 列表内容，避免半透明顶栏透出列表控件 */
+/* Hide the webapp list content while a webapp is open, so the translucent topbar
+   doesn't show the list controls through it */
+body.webapp-active [data-page="webapplist"] {
+  visibility: hidden;
+}
+
 #web-topbar {
   position: fixed;
   top: 12px;

app/src/main/assets/h5/js/webapp/topbar.js

@@ -39,6 +39,10 @@ window.showTopbar = function (tabs) {
   bar.style.display = tabs.length ? 'flex' : 'none';
   const panel = document.getElementById('tab-panel');
   if (panel && !tabs.length) panel.style.display = 'none';
+  // 有 webapp 时隐藏 webapplist 页面内容（避免半透明顶栏透出列表控件），无 webapp 时恢复
+  // Hide the webapp list content while a webapp is open (so the translucent topbar
+  // doesn't show the list controls through it); restore when none are open
+  document.body.classList.toggle('webapp-active', tabs.length > 0);
 };
 
 // 标签面板：列出所有标签，点击切换，× 关闭