Add frontend smoke tests for landing page component

kubetix-web/app/__tests__/page.test.tsx

@@ -0,0 +1,25 @@
+/** @vitest-environment jsdom */
+import { render, screen } from "@testing-library/react"
+import Home from "../page"
+
+// Mock axios so the component does not attempt real API calls during tests.
+vi.mock("axios", () => ({
+  default: {
+    get: vi.fn(() => Promise.reject(new Error("Network error"))),
+    post: vi.fn(() => Promise.reject(new Error("Network error"))),
+    delete: vi.fn(() => Promise.reject(new Error("Network error"))),
+  },
+}))
+
+describe("Home page", () => {
+  it("renders the login screen for unauthenticated users", async () => {
+    render(<Home />)
+
+    // Wait for auth loading to finish (component shows login when /users/me fails)
+    await screen.findByText("KubeTix")
+
+    expect(screen.getByPlaceholderText(/you@example\.com/i)).toBeInTheDocument()
+    expect(screen.getByPlaceholderText(/password/i)).toBeInTheDocument()
+    expect(screen.getByRole("button", { name: /sign in/i })).toBeInTheDocument()
+  })
+})