fixed nav, added sanity and guides pages

components/BuilderNavConditional.tsx

@@ -0,0 +1,19 @@
+"use client";
+
+import { usePathname } from "next/navigation";
+import { BuilderNav } from "./BuilderNav";
+
+/**
+ * Wraps BuilderNav with pathname-aware visibility.
+ * The catalog bar is irrelevant on guide pages — hide it there.
+ */
+export function BuilderNavConditional() {
+  const pathname = usePathname();
+
+  // Hide catalog bar on guide pages — part categories don't apply when reading an article
+  if (pathname.startsWith("/guides")) return null;
+
+  return <BuilderNav />;
+}
+
+export default BuilderNavConditional;