agents: build nav entry

Author: elithrar

src/content/docs/agents/build/index.md

@@ -0,0 +1,14 @@
+---
+pcx_content_type: reference
+title: Build
+sidebar:
+  order: 10
+  group:
+    hideIndex: true
+---
+
+import { DirectoryListing } from "~/components";
+
+Build
+
+<DirectoryListing />