chore(nav): add Client-side tools (Web SDK) to Tools sidebar

Expose new page at /tools/client-side-websdk under Tools section.

Author: cursoragent

fern/docs.yml

@@ -185,6 +185,9 @@ navigation:
               - page: Custom tools
                 path: tools/custom-tools.mdx
                 icon: fa-light fa-screwdriver-wrench
+              - page: Client-side tools (Web SDK)
+                path: tools/client-side-websdk.mdx
+                icon: fa-light fa-browser
               - page: Tool rejection plan
                 path: tools/tool-rejection-plan.mdx
                 icon: fa-light fa-shield-xmark