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>

package.json

@@ -0,0 +1,19 @@
+{
+  "name": "payment-e2e-automation",
+  "version": "1.0.0",
+  "scripts": {
+    "test": "playwright test",
+    "test:dev": "TEST_ENV=dev playwright test",
+    "test:staging": "TEST_ENV=staging playwright test",
+    "test:prod": "TEST_ENV=prod playwright test",
+    "report": "playwright show-report"
+  },
+  "dependencies": {
+    "dotenv": "^16.3.1"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.40.0",
+    "axios": "^1.6.0",
+    "typescript": "^5.3.0"
+  }
+}