sync update from LAN repo (source dhk-1 @ 3b1ec5b4)

frontend-web/index.html

@@ -12,6 +12,40 @@
           root.classList.add("dark");
         } catch (e) {}
       })();
+      // Chrome 102 has no AbortSignal.timeout (Chrome 103+). Install before
+      // any module so LangGraph SDK control requests can set a deadline.
+      (function () {
+        try {
+          if (typeof AbortSignal === "undefined" || typeof AbortSignal.timeout === "function") {
+            return;
+          }
+          AbortSignal.timeout = function (milliseconds) {
+            var controller = new AbortController();
+            var timer = setTimeout(function () {
+              var reason;
+              try {
+                reason = new DOMException("signal timed out", "TimeoutError");
+              } catch (err) {
+                reason = new Error("signal timed out");
+                reason.name = "TimeoutError";
+              }
+              try {
+                controller.abort(reason);
+              } catch (err) {
+                controller.abort();
+              }
+            }, milliseconds);
+            controller.signal.addEventListener(
+              "abort",
+              function () {
+                clearTimeout(timer);
+              },
+              { once: true },
+            );
+            return controller.signal;
+          };
+        } catch (err) {}
+      })();
     </script>
     <script>
       // React 19's development profiler uses the User Timing Level 3
@@ -42,9 +76,25 @@
       })();
     </script>
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
+    <script>
+      // Relative production assets need a directory URL. A mounted prefix such
+      // as /web must resolve against /web/. history.replaceState during parsing
+      // makes old Firefox abort the document (NS_BINDING_ABORTED) before the
+      // login bundle runs, so install a base URL instead of rewriting history.
+      (function () {
+        try {
+          var path = window.location.pathname;
+          if (path === "/" || /\/$/.test(path) || /\.[^/]+$/.test(path)) return;
+          if (document.querySelector("base")) return;
+          var base = document.createElement("base");
+          base.href = path + "/";
+          document.head.appendChild(base);
+        } catch (e) {}
+      })();
+    </script>
+    <link rel="icon" type="image/svg+xml" href="%BASE_URL%favicon.svg" />
     <title>CM 助手</title>
-    <script src="/runtime-config.js" data-runtime-config></script>
+    <script src="%BASE_URL%runtime-config.js" data-runtime-config></script>
   </head>
   <body>
     <div id="root"></div>