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/__init__.py

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+"""
+测试模块
+"""

tests/test_auth_config.py

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+"""
+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!")

tests/test_login.py

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+"""
+Test Yonyou BIP system login functionality
+"""
+
+import sys
+from pathlib import Path
+
+# Add project root to Python path
+PROJECT_ROOT = Path(__file__).resolve().parent.parent
+sys.path.insert(0, str(PROJECT_ROOT))
+
+from playwright.sync_api import sync_playwright
+from utils.auth import login, logout, close_session
+import os
+
+# Load environment variables
+from dotenv import load_dotenv
+load_dotenv(PROJECT_ROOT / ".env")
+
+# Configure browser path
+os.environ["PLAYWRIGHT_BROWSERS_PATH"] = os.getenv("PLAYWRIGHT_BROWSERS_PATH")
+
+print("=" * 60)
+print("Testing Yonyou BIP Login and Logout")
+print("=" * 60)
+
+# Display configuration information
+print(f"\nConfiguration:")
+print(f"  URL: {os.getenv('ERP_URL')}")
+print(f"  Username: {os.getenv('ERP_USERNAME')}")
+print(f"  Headless: {os.getenv('ERP_HEADLESS')}")
+print(f"  Ignore HTTPS Errors: {os.getenv('ERP_IGNORE_HTTPS_ERRORS')}")
+
+try:
+    with sync_playwright() as p:
+        print("\n[1/5] Starting browser...")
+        browser, context, page, main_frame = login(
+            playwright=p,
+            verbose=True
+        )
+
+        print("\n[2/5] Login successful!")
+
+        # Wait a moment to observe the page after login
+        print("\n[3/5] Waiting 3 seconds to observe the page after login...")
+        import time
+        time.sleep(3)
+
+        # Test logout
+        print("\n[4/5] Testing logout...")
+        logout(main_frame, verbose=True)
+
+        print("\n[5/5] Logout successful!")
+
+        # Wait a moment to observe the page after logout
+        print("\nWaiting 2 seconds to observe the page after logout...")
+        time.sleep(2)
+
+        print("\n[SUCCESS] Login and logout test completed successfully!")
+
+        # Check if auto-close browser
+        auto_close = os.getenv("ERP_AUTO_CLOSE_BROWSER", "true").lower() in ("true", "1", "yes")
+        if not auto_close:
+            print("\n[INFO] Browser will stay open for 10 seconds for manual observation...")
+            time.sleep(10)
+
+        # Close browser
+        print("\n[CLEANUP] Closing browser session...")
+        close_session(browser, context)
+
+except Exception as e:
+    print(f"\n[ERROR] Login/logout test failed!")
+    print(f"Error: {e}")
+    import traceback
+    traceback.print_exc()
+
+print("\n" + "=" * 60)
+print("Test completed")
+print("=" * 60)