fix(openclaw controller): use buildOpenClawControlUiUrl for generating gateway URLs (#493)

electron/utils/openclaw-control-ui.ts

@@ -0,0 +1,17 @@
+/**
+ * Build the external OpenClaw Control UI URL.
+ *
+ * OpenClaw 2026.3.13 imports one-time auth tokens from the URL fragment
+ * (`#token=...`) and strips them after load. Query-string tokens are removed
+ * by the UI bootstrap but are not imported for auth.
+ */
+export function buildOpenClawControlUiUrl(port: number, token: string): string {
+  const url = new URL(`http://127.0.0.1:${port}/`);
+  const trimmedToken = token.trim();
+
+  if (trimmedToken) {
+    url.hash = new URLSearchParams({ token: trimmedToken }).toString();
+  }
+
+  return url.toString();
+}