Refine use cases rule examples

lib/navigationChromelessPath.ts

@@ -0,0 +1,15 @@
+/**
+ * Routes that render product chrome only (`CreateFlowTopNav`), not marketing `Top`.
+ * Keep in sync with `ConditionalNavigationClient`.
+ */
+export function isChromelessNavigationPath(
+  pathname: string | null | undefined,
+): boolean {
+  if (!pathname) {
+    return false;
+  }
+  if (pathname.startsWith("/create") || pathname === "/login") {
+    return true;
+  }
+  return /^\/use-cases\/[^/]+\/rule\/?$/.test(pathname);
+}