feat: self-serve signup Phase 2 (frontend cutover) (#162)

Co-authored-by: Michael Chihlas <michael@resolutionflow.com>
Co-committed-by: Michael Chihlas <michael@resolutionflow.com>

frontend/src/pages/__tests__/LandingPage.test.tsx

@@ -0,0 +1,69 @@
+import { describe, it, expect, beforeEach, beforeAll, vi } from 'vitest'
+import { render, screen, waitFor } from '@testing-library/react'
+import { MemoryRouter } from 'react-router-dom'
+import { HelmetProvider } from 'react-helmet-async'
+
+import LandingPage from '../LandingPage'
+import {
+  __resetAppConfigCache,
+  __setAppConfigCache,
+} from '@/hooks/useAppConfig'
+
+// jsdom does not provide IntersectionObserver. LandingPage uses it for
+// scroll-reveal animations; stub a no-op so the page can mount.
+beforeAll(() => {
+  // @ts-expect-error — test-only stub
+  globalThis.IntersectionObserver = class {
+    observe() {}
+    unobserve() {}
+    disconnect() {}
+    takeRecords() {
+      return []
+    }
+  }
+})
+
+function renderPage() {
+  return render(
+    <HelmetProvider>
+      <MemoryRouter initialEntries={['/']}>
+        <LandingPage />
+      </MemoryRouter>
+    </HelmetProvider>,
+  )
+}
+
+describe('LandingPage', () => {
+  beforeEach(() => {
+    __resetAppConfigCache()
+    vi.clearAllMocks()
+  })
+
+  it('shows See pricing CTA when self_serve_enabled is true', async () => {
+    __setAppConfigCache({
+      self_serve_enabled: true,
+      oauth_providers: [],
+    })
+
+    renderPage()
+
+    await waitFor(() => {
+      expect(screen.getByTestId('landing-see-pricing')).toBeInTheDocument()
+    })
+    const cta = screen.getByTestId('landing-see-pricing')
+    expect(cta).toHaveAttribute('href', '/pricing')
+    expect(cta).toHaveTextContent(/See pricing/i)
+  })
+
+  it('hides See pricing CTA when self_serve_enabled is false', async () => {
+    __setAppConfigCache({
+      self_serve_enabled: false,
+      oauth_providers: [],
+    })
+
+    renderPage()
+
+    // Hero "Start Free" still renders, but the gated /pricing CTA does not.
+    expect(screen.queryByTestId('landing-see-pricing')).not.toBeInTheDocument()
+  })
+})