feat: implement Save & Taste flow in CameraCapture

tests/e2e/auth.test.ts

@@ -0,0 +1,15 @@
+import { test, expect } from '@playwright/test';
+
+test.describe('Authentication', () => {
+    test('should show error on invalid login', async ({ page }) => {
+        await page.goto('/');
+
+        await page.getByPlaceholder('name@beispiel.de').fill('wrong@example.com');
+        await page.getByPlaceholder('••••••••').fill('wrongpassword');
+        await page.getByRole('button', { name: 'Einloggen' }).click();
+
+        // Expect error message
+        // Note: This content depends on Supabase error message
+        await expect(page.locator('div:has-text("Invalid login credentials")')).toBeVisible();
+    });
+});