feat(FN-4057): add printing press built-in plugin entry

Bundled the Printing Press plugin into the dashboard by adding it as a built-in entry in `PluginManager.tsx` with corresponding tests and documentation updates, and included a changeset to publish the change under `@runfusion/fusion`.

Fusion-Task-Id: FN-4057

packages/dashboard/app/components/PluginManager.tsx

@@ -130,6 +130,13 @@ const BUILTIN_PLUGINS: BuiltinPlugin[] = [
     category: "integration",
     path: "./plugins/fusion-plugin-whatsapp-chat",
   },
+  {
+    id: "fusion-plugin-cli-printing-press",
+    name: "CLI Printing Press",
+    description: "Guided wizard for drafting external service CLI definitions.",
+    category: "integration",
+    path: "./plugins/fusion-plugin-cli-printing-press",
+  },
   {
     id: BUILTIN_AGENT_BROWSER_PLUGIN_ID,
     name: "Agent Browser",

packages/dashboard/app/components/__tests__/PluginManager.test.tsx

@@ -268,6 +268,7 @@ describe("PluginManager", () => {
     expect(screen.getByText("Droid Runtime")).toBeTruthy();
     expect(screen.getByText("Dependency Graph")).toBeTruthy();
     expect(screen.getByText("WhatsApp Chat")).toBeTruthy();
+    expect(screen.getByText("CLI Printing Press")).toBeTruthy();
     expect(screen.getByText(/Pairs to WhatsApp Web \(multi-device\) with QR or pairing code/i)).toBeTruthy();
   });
 
@@ -425,6 +426,26 @@ describe("PluginManager", () => {
     });
   });
 
+  it("installs CLI Printing Press from the built-in section", async () => {
+    render(<PluginManager addToast={addToast} />);
+
+    await waitFor(() => {
+      expect(fetchPlugins).toHaveBeenCalled();
+    });
+
+    const printingPressLabel = await screen.findByText("CLI Printing Press");
+    const printingPressCard = printingPressLabel.closest(".plugin-builtins-item");
+    expect(printingPressCard).toBeTruthy();
+
+    const installButton = within(printingPressCard as HTMLElement).getByRole("button", { name: /Install CLI Printing Press/i });
+    await userEvent.click(installButton);
+
+    await waitFor(() => {
+      expect(installPlugin).toHaveBeenCalledWith({ path: "./plugins/fusion-plugin-cli-printing-press" }, undefined);
+      expect(addToast).toHaveBeenCalledWith("CLI Printing Press installed globally", "success");
+    });
+  });
+
   it("renders plugin list when plugins are available", async () => {
     vi.mocked(fetchPlugins).mockResolvedValueOnce(mockPlugins);