Add OTP sign-in option + Account Linking (#276)

* feat(accounts): allow linking email password
* feat(auth): add OTP sign-in
* refactor(accounts): remove 'sonner' dependency and update toast imports
* feat(supabase): enable analytics and configure database seeding
* feat(auth): update email templates and add OTP template
* feat(auth): add last sign in method hints
* feat(config): add devIndicators position to bottom-right
* feat(auth): implement comprehensive last authentication method tracking tests

apps/e2e/tests/authentication/auth.spec.ts

@@ -96,3 +96,147 @@ test.describe('Protected routes', () => {
     expect(page.url()).toContain('/auth/sign-in?next=/home/settings');
   });
 });
+
+test.describe('Last auth method tracking', () => {
+  let testEmail: string;
+
+  test.beforeEach(async ({ page }) => {
+    const auth = new AuthPageObject(page);
+
+    testEmail = auth.createRandomEmail();
+
+    // First, sign up with password
+    await auth.goToSignUp();
+
+    await auth.signUp({
+      email: testEmail,
+      password: 'password123',
+      repeatPassword: 'password123',
+    });
+
+    await auth.visitConfirmEmailLink(testEmail);
+    await page.waitForURL('**/home');
+
+    // Sign out
+    await auth.signOut();
+    await page.waitForURL('/');
+  });
+
+  test('should show last used method hint on sign-in page after password sign-in', async ({
+    page,
+  }) => {
+    const auth = new AuthPageObject(page);
+
+    // Go to sign-in page and check for last method hint
+    await auth.goToSignIn();
+
+    // Check if the last used method hint is visible
+    const lastMethodHint = page.locator('[data-test="last-auth-method-hint"]');
+    await expect(lastMethodHint).toBeVisible();
+
+    // Verify it shows the correct method (password)
+    const passwordMethodText = page.locator('text=email and password');
+    await expect(passwordMethodText).toBeVisible();
+  });
+
+  test('should show existing account hint on sign-up page after previous sign-in', async ({
+    page,
+  }) => {
+    const auth = new AuthPageObject(page);
+
+    // Go to sign-up page (user already signed in with password in previous test)
+    await auth.goToSignUp();
+
+    // Check if the existing account hint is visible
+    const existingAccountHint = page.locator(
+      '[data-test="existing-account-hint"]',
+    );
+
+    await expect(existingAccountHint).toBeVisible();
+  });
+
+  test('should track method after successful sign-in', async ({ page }) => {
+    const auth = new AuthPageObject(page);
+
+    // Clear cookies to simulate a fresh session
+    await page.context().clearCookies();
+
+    // Sign in with the test email
+    await auth.goToSignIn();
+
+    await auth.signIn({
+      email: testEmail,
+      password: 'password123',
+    });
+
+    await page.waitForURL('**/home');
+
+    // Sign out and check the method is still tracked
+    await auth.signOut();
+    await page.waitForURL('/');
+
+    // Go to sign-in page and check for last method hint
+    await auth.goToSignIn();
+
+    // The hint should still be visible after signing in again
+    const lastMethodHint = page.locator('[data-test="last-auth-method-hint"]');
+
+    await expect(lastMethodHint).toBeVisible();
+  });
+
+  test('should clear localStorage after 30 days simulation', async ({
+    page,
+  }) => {
+    const auth = new AuthPageObject(page);
+
+    // Go to sign-in page first
+    await auth.goToSignIn();
+
+    // Simulate old timestamp (31 days ago) by directly modifying localStorage
+    const thirtyOneDaysAgo = Date.now() - 31 * 24 * 60 * 60 * 1000;
+
+    await page.evaluate((timestamp) => {
+      const oldAuthMethod = {
+        method: 'password',
+        email: 'old@example.com',
+        timestamp: timestamp,
+      };
+      localStorage.setItem('auth_last_method', JSON.stringify(oldAuthMethod));
+    }, thirtyOneDaysAgo);
+
+    // Reload the page to trigger the expiry check
+    await page.reload();
+
+    // The hint should not be visible for expired data
+    const lastMethodHint = page.locator('[data-test="last-auth-method-hint"]');
+    await expect(lastMethodHint).not.toBeVisible();
+
+    // Verify localStorage was cleared
+    const storedMethod = await page.evaluate(() => {
+      return localStorage.getItem('auth_last_method');
+    });
+
+    expect(storedMethod).toBeNull();
+  });
+
+  test('should handle localStorage errors gracefully', async ({ page }) => {
+    const auth = new AuthPageObject(page);
+
+    await auth.goToSignIn();
+
+    // Simulate corrupted localStorage data
+    await page.evaluate(() => {
+      localStorage.setItem('auth_last_method', 'invalid-json-data');
+    });
+
+    // Reload the page
+    await page.reload();
+
+    // Should not crash and not show the hint
+    const lastMethodHint = page.locator('[data-test="last-auth-method-hint"]');
+    await expect(lastMethodHint).not.toBeVisible();
+
+    // Page should still be functional
+    await expect(page.locator('input[name="email"]')).toBeVisible();
+  });
+});