feat: iframe 工具栏增加新标签页打开

在内嵌页工具栏「强制刷新」旁增加「新标签页」按钮，以 noopener 方式打开当前 iframe 地址，便于无法内嵌时在独立标签访问。

Co-authored-by: Cursor <cursoragent@cursor.com>

templates/index.html

@@ -156,6 +156,14 @@
           >
             强制刷新
           </button>
+          <button
+            type="button"
+            class="btn btn-secondary btn-toolbar-refresh"
+            id="frame-open-tab"
+            title="在新标签页打开当前页面"
+          >
+            新标签页
+          </button>
         </div>
       </div>
       <div class="frame-wrap">
@@ -208,6 +216,7 @@
     var cards = document.querySelectorAll(".service-card[data-url]");
     var btnRefresh = document.getElementById("frame-refresh");
     var btnForceRefresh = document.getElementById("frame-force-refresh");
+    var btnOpenTab = document.getElementById("frame-open-tab");
     var btnBack = document.getElementById("frame-back-overview");
     var btnBackHub = document.getElementById("frame-back-hub");
     var btnHubLogin = document.getElementById("frame-hub-login");
@@ -626,6 +635,31 @@
       };
     }
 
+    function getCurrentFrameUrl() {
+      var u = "";
+      try {
+        if (
+          frame.contentWindow &&
+          frame.contentWindow.location &&
+          frame.contentWindow.location.href &&
+          frame.contentWindow.location.href !== "about:blank"
+        ) {
+          u = frame.contentWindow.location.href;
+        }
+      } catch (e) {}
+      if (!u || u === "about:blank") {
+        u = frame.src || currentOpenUrl || currentBaseUrl;
+      }
+      if (!u || u === "about:blank") return "";
+      return u;
+    }
+
+    function openInNewTab() {
+      var u = getCurrentFrameUrl();
+      if (!u) return;
+      window.open(u, "_blank", "noopener,noreferrer");
+    }
+
     function showDashboard() {
       currentBaseUrl = "";
       currentOpenUrl = "";
@@ -723,6 +757,12 @@
       forceReloadUrl();
     });
 
+    if (btnOpenTab) {
+      btnOpenTab.addEventListener("click", function () {
+        openInNewTab();
+      });
+    }
+
     btnBack.addEventListener("click", function () {
       showDashboard();
     });