first commit

Playwright API test suite for payment/cashier endpoints, with
per-environment config (dev/staging/prod) loaded via dotenv.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

playwright.config.ts

@@ -0,0 +1,24 @@
+import { defineConfig, devices } from '@playwright/test';
+
+export default defineConfig({
+  testDir: './src/tests',
+  timeout: 120000, // 2 minutes per test
+  expect: {
+    timeout: 5000,
+  },
+  fullyParallel: true,
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 2 : 0,
+  workers: process.env.CI ? 1 : undefined,
+  // Auto-open the HTML report after every run (set open: 'never' for CI)
+  reporter: [['html', { open: process.env.CI ? 'never' : 'always' }]],
+  use: {
+    baseURL: 'https://www.babinnovations.com',
+  },
+  projects: [
+    {
+      name: 'chromium',
+      use: { ...devices['desktop-chromium'] },
+    },
+  ],
+});