docs(shell-docs): IframeSwitcher id forwarding + V2 SDK prose fix

IframeSwitcher: forward the `id` prop to a wrapping `<div id={id}>` so MDX
authors can deep-link to a specific switcher instance. The prop was
declared but never consumed.

oss-vs-enterprise.mdx: fix the Frontend SDK bullet to reflect canonical
V2 — both hooks and prebuilt components ship from `@copilotkit/react-core`
(the standalone `@copilotkit/react-ui` package is V1-era).

Author: samjulien

showcase/shell-docs/src/components/content/iframe-switcher.tsx

@@ -12,6 +12,7 @@ interface IframeSwitcherProps {
 }
 
 export function IframeSwitcher({
+  id,
   exampleUrl,
   codeUrl,
   exampleLabel = "Demo",
@@ -27,23 +28,25 @@ export function IframeSwitcher({
   };
 
   return (
-    <Tabs items={[exampleLabel, codeLabel]}>
-      <Tab value={exampleLabel}>
-        <iframe
-          src={exampleUrl}
-          style={iframeStyle}
-          sandbox="allow-scripts allow-same-origin allow-forms allow-popups"
-          loading="lazy"
-        />
-      </Tab>
-      <Tab value={codeLabel}>
-        <iframe
-          src={codeUrl}
-          style={iframeStyle}
-          sandbox="allow-scripts allow-same-origin allow-forms allow-popups"
-          loading="lazy"
-        />
-      </Tab>
-    </Tabs>
+    <div id={id}>
+      <Tabs items={[exampleLabel, codeLabel]}>
+        <Tab value={exampleLabel}>
+          <iframe
+            src={exampleUrl}
+            style={iframeStyle}
+            sandbox="allow-scripts allow-same-origin allow-forms allow-popups"
+            loading="lazy"
+          />
+        </Tab>
+        <Tab value={codeLabel}>
+          <iframe
+            src={codeUrl}
+            style={iframeStyle}
+            sandbox="allow-scripts allow-same-origin allow-forms allow-popups"
+            loading="lazy"
+          />
+        </Tab>
+      </Tabs>
+    </div>
   );
 }

showcase/shell-docs/src/content/docs/concepts/oss-vs-enterprise.mdx

@@ -11,7 +11,7 @@ CopilotKit is two products in one repository: an **open-source frontend stack**
 
 The OSS layer is everything you need to build a working agentic React app. It runs without any external service from CopilotKit:
 
-- **Frontend SDK** — `@copilotkit/react-core` (hooks: `useAgent`, `useFrontendTool`, `useAgentContext`, `useThreads`, etc.) and `@copilotkit/react-ui` (prebuilt components: `CopilotChat`, `CopilotSidebar`, `CopilotPopup`).
+- **Frontend SDK** — `@copilotkit/react-core`, exporting both hooks (`useAgent`, `useFrontendTool`, `useAgentContext`, `useThreads`, etc.) and prebuilt components (`CopilotChat`, `CopilotSidebar`, `CopilotPopup`).
 - **Runtime** — `@copilotkit/runtime`, the request handler that mounts in your application server. Framework-agnostic core plus thin adapters for Express, Hono, Bun, Deno, Cloudflare Workers.
 - **AG-UI protocol** — open standard for agent ↔ frontend communication. 16 standardized event types, transport-agnostic.
 - **Built-in Agent** — `BuiltInAgent` runs an in-process agent loop (OpenAI / Anthropic / Google / any AI-SDK model) without requiring an external framework.