tests/e2e/checkout-flows.spec.ts

@@ -301,7 +301,7 @@ for (const plan of ['professional', 'founding'] as const) {
 test('[free] submit with empty email shows auth error', async ({ page }) => {
   await mockSupabaseConfig(page);
   await page.goto('/checkout?plan=free');
-  await page.waitForFunction(() => typeof (window as any).signUpWithEmail === 'function', { timeout: 10000 });
+  await page.waitForLoadState('domcontentloaded');
   await page.locator('.checkout-email-btn').click();
   const msg = page.locator('#auth-message');
   await expect(msg).toBeVisible({ timeout: 4000 });
@@ -312,7 +312,7 @@ test('[free] submit with empty email shows auth error', async ({ page }) => {
 test('[free] submit with password < 8 chars shows length error', async ({ page }) => {
   await mockSupabaseConfig(page);
   await page.goto('/checkout?plan=free');
-  await page.waitForFunction(() => typeof (window as any).signUpWithEmail === 'function', { timeout: 10000 });
+  await page.waitForLoadState('domcontentloaded');
   await page.fill('#auth-email', 'test@example.com');
   await page.fill('#auth-password', 'short');
   await page.locator('.checkout-email-btn').click();
@@ -325,7 +325,7 @@ test('[free] submit with password < 8 chars shows length error', async ({ page }
 test('[free] submit with email only (no password) shows error', async ({ page }) => {
   await mockSupabaseConfig(page);
   await page.goto('/checkout?plan=free');
-  await page.waitForFunction(() => typeof (window as any).signUpWithEmail === 'function', { timeout: 10000 });
+  await page.waitForLoadState('domcontentloaded');
   await page.fill('#auth-email', 'test@example.com');
   // leave password empty
   await page.locator('.checkout-email-btn').click();
@@ -342,7 +342,7 @@ test('[free] initial button says "Create account"', async ({ page }) => {
 
 test('[free] clicking "Sign in" link changes button text to "Sign in"', async ({ page }) => {
   await page.goto('/checkout?plan=free');
-  await page.waitForFunction(() => typeof (window as any).signUpWithEmail === 'function', { timeout: 10000 });
+  await page.waitForLoadState('domcontentloaded');
   await page.click('a[onclick*="showSignIn"]');
   await expect(page.locator('.checkout-email-btn')).toContainText('Sign in');
 });
@@ -358,7 +358,7 @@ test('[free] successful sign-up → payment-section shown, auth-section hidden',
   await mockSupabaseConfig(page);
   await mockSignUpSuccess(page);
   await page.goto('/checkout?plan=free');
-  await page.waitForFunction(() => typeof (window as any).signUpWithEmail === 'function', { timeout: 10000 });
+  await page.waitForLoadState('domcontentloaded');
 
   await page.fill('#auth-email', 'newuser@example.com');
   await page.fill('#auth-password', 'password123');
@@ -372,7 +372,7 @@ test('[free] sign-up email-confirm-required → shows check-email message', asyn
   await mockSupabaseConfig(page);
   await mockSignUpEmailConfirmRequired(page);
   await page.goto('/checkout?plan=free');
-  await page.waitForFunction(() => typeof (window as any).signUpWithEmail === 'function', { timeout: 10000 });
+  await page.waitForLoadState('domcontentloaded');
 
   await page.fill('#auth-email', 'confirm@example.com');
   await page.fill('#auth-password', 'password123');
@@ -388,7 +388,7 @@ test('[free] sign-in success (via toggle) → payment-section shown', async ({ p
   await mockSupabaseConfig(page);
   await mockSignInSuccess(page);
   await page.goto('/checkout?plan=free');
-  await page.waitForFunction(() => typeof (window as any).signUpWithEmail === 'function', { timeout: 10000 });
+  await page.waitForLoadState('domcontentloaded');
 
   await page.click('a[onclick*="showSignIn"]');
   await page.fill('#auth-email', 'existing@example.com');
@@ -402,7 +402,7 @@ test('[free] sign-in error → shows error message, form stays visible', async (
   await mockSupabaseConfig(page);
   await mockSignInError(page, 'Invalid login credentials');
   await page.goto('/checkout?plan=free');
-  await page.waitForFunction(() => typeof (window as any).signUpWithEmail === 'function', { timeout: 10000 });
+  await page.waitForLoadState('domcontentloaded');
 
   await page.click('a[onclick*="showSignIn"]');
   await page.fill('#auth-email', 'wrong@example.com');

tests/e2e/checkout-stripe.spec.ts

@@ -36,6 +36,8 @@ async function injectMockStripe(page: Page, opts: {
   confirmResult?: { error?: { message: string } };
   declineMessage?: string;
 } = {}) {
+  // Block the real Stripe CDN so it cannot override the addInitScript mock
+  await page.route('https://js.stripe.com/**', (route) => route.abort());
   await page.addInitScript((o) => {
     (window as any).Stripe = function (_key: string) {
       const confirmResult = o.declineMessage