Promote More to a top-level Cookbook entry

Lift the More group out of Expert Topic so it appears at the
Cookbook root level next to the other groups, and link it to its
first subpage.

Author: claude

docs/.vitepress/config.mjs

@@ -237,13 +237,14 @@ export default defineConfig({
               { text: "Lock", link: "/development/specific/locks" },
               { text: "Statefulness", link: "/development/specific/statefulness" },
               { text: "Logout", link: "/configuration/logout" },
-              {
-                text: "More",
-                collapsed: true,
-                items: [
-                  { text: "Demo Output", link: "/development/specific/demo_output" },
-                ],
-              },
+            ],
+          },
+          {
+            text: "More",
+            link: "/development/specific/demo_output",
+            collapsed: true,
+            items: [
+              { text: "Demo Output", link: "/development/specific/demo_output" },
             ],
           },
         ],