fix(webui): tighten native settings spacing

webui/src/components/settings/SettingsSidebar.tsx

@@ -76,13 +76,16 @@ export function SettingsSidebar({
     <aside
       className={cn(
         "flex w-full shrink-0 flex-col bg-settings-surface px-3 pb-2 lg:w-[17rem] lg:px-3 lg:pb-4",
-        hostChromeInset ? "pt-[4.25rem] lg:pt-[4.25rem]" : "pt-4 lg:pt-4",
+        hostChromeInset ? "pt-10 lg:pt-10" : "pt-4 lg:pt-4",
       )}
     >
       <button
         type="button"
         onClick={onBackToChat}
-        className="touch-target mb-2 inline-flex w-fit items-center gap-1.5 rounded-full px-2.5 py-1.5 text-[12px] font-medium text-muted-foreground transition-colors hover:bg-muted/70 hover:text-foreground lg:mb-3"
+        className={cn(
+          "touch-target mb-2 inline-flex w-fit items-center gap-1.5 rounded-full px-2.5 py-1.5 text-[12px] font-medium text-muted-foreground transition-colors hover:bg-muted/70 hover:text-foreground lg:mb-3",
+          hostChromeInset && "-ml-1",
+        )}
       >
         <ChevronLeft className="h-3.5 w-3.5" aria-hidden />
         {t("settings.backToChat")}

webui/src/tests/app-layout.test.tsx

@@ -480,6 +480,9 @@ describe("App layout", () => {
     expect(
       screen.getByRole("navigation", { name: "Settings sections" }),
     ).toBeInTheDocument();
+    const backButton = screen.getByRole("button", { name: "Back to chat" });
+    expect(backButton.closest("aside")).toHaveClass("pt-4", "lg:pt-4");
+    expect(backButton).not.toHaveClass("-ml-1");
     expect(container.querySelectorAll("main")).toHaveLength(1);
     expect(screen.getByRole("heading", { level: 1, name: "Settings" })).toBeInTheDocument();
   });
@@ -1657,6 +1660,28 @@ describe("App layout", () => {
     await waitFor(() => expect(flowSidebar).toHaveStyle({ width: "272px" }));
   });
 
+  it("aligns native settings navigation below the titlebar without extra top padding", async () => {
+    vi.mocked(fetchBootstrap).mockResolvedValue({
+      token: "tok",
+      api_token: "api-tok",
+      ws_path: "/",
+      expires_in: 300,
+      runtime_surface: "native",
+    });
+    mockFetchRoutes({ "/api/settings": baseSettingsPayload() });
+
+    render(<App />);
+
+    await waitFor(() => expect(connectSpy).toHaveBeenCalled());
+    const sidebar = screen.getByRole("navigation", { name: "Sidebar navigation" });
+    fireEvent.click(within(sidebar).getByRole("button", { name: "Settings" }));
+
+    const backButton = await screen.findByRole("button", { name: "Back to chat" });
+    expect(backButton.closest("aside")).toHaveClass("pt-10", "lg:pt-10");
+    expect(backButton.closest("aside")).not.toHaveClass("pt-[4.25rem]");
+    expect(backButton).toHaveClass("-ml-1");
+  });
+
   it("uses native chrome when the host bridge overrides browser gateway metadata", async () => {
     Reflect.set(window, "nanobotHost", { pickFolder: vi.fn() });
     vi.mocked(fetchBootstrap).mockResolvedValue({