Add Yonyou BIP automation framework with authentication

Features:
- Add auth module (utils/auth.py) for Yonyou BIP login/logout
- Add environment configuration support with python-dotenv
- Add Playwright browser automation with customizable path
- Add comprehensive test suite (tests/) with login/logout tests
- Add dependency management (requirements.txt)
- Add environment variable template (.env.example)

Key capabilities:
- Login with username/password from environment variables
- Auto-handle force login popup
- Logout with confirmation dialog handling
- Configurable headless mode and HTTPS error handling
- Auto-close browser option

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/test_auth_config.py

@@ -0,0 +1,44 @@
+"""
+Test if auth module configuration is correct
+"""
+
+from playwright.sync_api import sync_playwright
+from dotenv import load_dotenv
+from pathlib import Path
+import os
+
+# Load environment variables
+PROJECT_ROOT = Path(__file__).resolve().parent.parent
+load_dotenv(PROJECT_ROOT / ".env")
+
+# Configure browser path
+os.environ["PLAYWRIGHT_BROWSERS_PATH"] = os.getenv("PLAYWRIGHT_BROWSERS_PATH")
+
+print("=" * 50)
+print("ERP System Configuration Check")
+print("=" * 50)
+
+# Display configuration information
+print(f"Browser Path: {os.getenv('PLAYWRIGHT_BROWSERS_PATH')}")
+print(f"ERP URL: {os.getenv('ERP_URL')}")
+print(f"Username: {os.getenv('ERP_USERNAME')}")
+print(f"Password: {'*' * len(os.getenv('ERP_PASSWORD', ''))}")
+print(f"Headless Mode: {os.getenv('ERP_HEADLESS')}")
+print(f"Ignore HTTPS Errors: {os.getenv('ERP_IGNORE_HTTPS_ERRORS')}")
+print(f"Auto Close Browser: {os.getenv('ERP_AUTO_CLOSE_BROWSER')}")
+
+print("\n" + "=" * 50)
+print("Check Playwright Browser")
+print("=" * 50)
+
+with sync_playwright() as p:
+    chromium_path = p.chromium.executable_path
+    print(f"Chromium Path: {chromium_path}")
+
+    # Check if browser file exists
+    if os.path.exists(chromium_path):
+        print("[OK] Browser file exists")
+    else:
+        print("[ERROR] Browser file not found")
+
+print("\n[OK] Configuration check completed!")