diff --git a/ui/components/ui/sidebar/navigation-mode-toggle.tsx b/ui/components/sidebar/navigation-mode-toggle.tsx
similarity index 100%
rename from ui/components/ui/sidebar/navigation-mode-toggle.tsx
rename to ui/components/sidebar/navigation-mode-toggle.tsx
diff --git a/ui/components/ui/sidebar/menu.test.tsx b/ui/components/ui/sidebar/menu.test.tsx
index 19322ce640..62be707418 100644
--- a/ui/components/ui/sidebar/menu.test.tsx
+++ b/ui/components/ui/sidebar/menu.test.tsx
@@ -1,13 +1,29 @@
 import { render, screen } from "@testing-library/react";
 import userEvent from "@testing-library/user-event";
-import { beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
+import {
+  afterEach,
+  beforeAll,
+  beforeEach,
+  describe,
+  expect,
+  it,
+  vi,
+} from "vitest";
 
 import { SIDEBAR_NAVIGATION_MODE } from "@/hooks/use-sidebar";
 
-const { openLaunchScanModalMock, pathnameValue, pushMock } = vi.hoisted(() => ({
+const {
+  openLaunchScanModalMock,
+  pathnameValue,
+  pushMock,
+  navigationModeValue,
+  setNavigationModeMock,
+} = vi.hoisted(() => ({
   openLaunchScanModalMock: vi.fn(),
   pathnameValue: { current: "/findings" },
   pushMock: vi.fn(),
+  navigationModeValue: { current: "browse" },
+  setNavigationModeMock: vi.fn(),
 }));
 
 vi.mock("next/navigation", () => ({
@@ -44,16 +60,38 @@ vi.mock("@/store", () => ({
   ) => selector({ openLaunchScanModal: openLaunchScanModalMock }),
 }));
 
+vi.mock("@/hooks/use-sidebar", async (importActual) => {
+  const actual = await importActual<typeof import("@/hooks/use-sidebar")>();
+  return {
+    ...actual,
+    useSidebar: (
+      selector: (state: {
+        navigationMode: string;
+        setNavigationMode: (mode: string) => void;
+      }) => unknown,
+    ) =>
+      selector({
+        navigationMode: navigationModeValue.current,
+        setNavigationMode: setNavigationModeMock,
+      }),
+  };
+});
+
 let MenuComponent: typeof import("./menu").Menu;
-let SidebarNavigationModeToggleComponent: typeof import("./navigation-mode-toggle").SidebarNavigationModeToggle;
+let SidebarNavigationModeToggleComponent: typeof import("@/components/sidebar/navigation-mode-toggle").SidebarNavigationModeToggle;
 
 beforeAll(async () => {
   MenuComponent = (await import("./menu")).Menu;
   SidebarNavigationModeToggleComponent = (
-    await import("./navigation-mode-toggle")
+    await import("@/components/sidebar/navigation-mode-toggle")
   ).SidebarNavigationModeToggle;
 });
 
+afterEach(() => {
+  vi.unstubAllEnvs();
+  navigationModeValue.current = "browse";
+});
+
 describe("Menu", () => {
   it("links scan to the scans page with the modal open", () => {
     pathnameValue.current = "/findings";
@@ -100,6 +138,30 @@ describe("Menu", () => {
       launchScanLink.querySelector('svg[viewBox="0 0 432.08 396.77"]'),
     ).toBeInTheDocument();
   });
+
+  it("swaps to the Lighthouse chat sidebar in cloud CHAT mode", () => {
+    pathnameValue.current = "/lighthouse";
+    vi.stubEnv("NEXT_PUBLIC_IS_CLOUD_ENV", "true");
+    navigationModeValue.current = SIDEBAR_NAVIGATION_MODE.CHAT;
+
+    render(<MenuComponent isOpen />);
+
+    expect(screen.getByTestId("lighthouse-chat-sidebar")).toBeInTheDocument();
+    expect(screen.getByRole("button", { name: "Chat" })).toBeInTheDocument();
+  });
+
+  it("keeps the navigation menu in cloud BROWSE mode", () => {
+    pathnameValue.current = "/findings";
+    vi.stubEnv("NEXT_PUBLIC_IS_CLOUD_ENV", "true");
+    navigationModeValue.current = SIDEBAR_NAVIGATION_MODE.BROWSE;
+
+    render(<MenuComponent isOpen />);
+
+    expect(
+      screen.queryByTestId("lighthouse-chat-sidebar"),
+    ).not.toBeInTheDocument();
+    expect(screen.getByRole("button", { name: "Home" })).toBeInTheDocument();
+  });
 });
 
 describe("SidebarNavigationModeToggle", () => {
diff --git a/ui/components/ui/sidebar/menu.tsx b/ui/components/ui/sidebar/menu.tsx
index ad40c889d0..454e0932a2 100644
--- a/ui/components/ui/sidebar/menu.tsx
+++ b/ui/components/ui/sidebar/menu.tsx
@@ -12,10 +12,10 @@ import {
   TooltipContent,
   TooltipTrigger,
 } from "@/components/shadcn/tooltip";
+import { SidebarNavigationModeToggle } from "@/components/sidebar/navigation-mode-toggle";
 import { ScrollArea } from "@/components/ui/scroll-area/scroll-area";
 import { CollapsibleMenu } from "@/components/ui/sidebar/collapsible-menu";
 import { MenuItem } from "@/components/ui/sidebar/menu-item";
-import { SidebarNavigationModeToggle } from "@/components/ui/sidebar/navigation-mode-toggle";
 import { useAuth } from "@/hooks";
 import { useRuntimeConfig } from "@/hooks/use-runtime-config";
 import { SIDEBAR_NAVIGATION_MODE, useSidebar } from "@/hooks/use-sidebar";