feat: Implement Walmart scraper and integrate with existing architecture

- Added Walmart scraper to scrape product data from Walmart.com, including category pages and product details.
- Introduced a stealth browser module to handle bot protection and improve scraping reliability.
- Created a SQLite database for tracking product history, price changes, stock events, and user favorites.
- Developed a Discord bot for user interaction, allowing location setting and stock checking at local stores.
- Implemented a favorites system to manage priority products and categories with custom notification settings.
- Added news aggregation module to fetch and analyze Pokemon TCG news from various sources.
- Created tools for API discovery and monitoring, including a backend monitor for detecting new products.
- Added unit tests for database operations, product filtering, and API endpoints to ensure functionality.
- Enhanced existing modules with improved error handling and logging for better maintainability.

tests/test_stealth.py

@@ -0,0 +1,111 @@
+"""
+Test script for the stealth browser module
+Run this to verify undetected-chromedriver is working
+"""
+
+import sys
+import time
+
+print("=" * 60)
+print("Stealth Browser Test")
+print("=" * 60)
+print()
+
+# Check dependencies
+print("1. Checking dependencies...")
+try:
+    import undetected_chromedriver as uc
+    print("   [OK] undetected-chromedriver installed")
+except ImportError:
+    print("   [ERROR] undetected-chromedriver not installed!")
+    print("   Run: pip install undetected-chromedriver")
+    sys.exit(1)
+
+try:
+    from selenium.webdriver.common.action_chains import ActionChains
+    print("   [OK] selenium installed")
+except ImportError:
+    print("   [ERROR] selenium not installed!")
+    print("   Run: pip install selenium")
+    sys.exit(1)
+
+# Import our stealth browser
+print()
+print("2. Importing stealth browser module...")
+try:
+    from stealth_browser import StealthBrowser, get_stealth_browser
+    print("   [OK] stealth_browser module loaded")
+except Exception as e:
+    print(f"   [ERROR] Failed to import: {e}")
+    sys.exit(1)
+
+# Test browser launch
+print()
+print("3. Launching stealth browser...")
+print("   (A Chrome window should open)")
+print()
+
+browser = None
+try:
+    browser = StealthBrowser(
+        headless=False,
+        session_name="test_session"
+    )
+    browser.start()
+    print("   [OK] Browser started successfully!")
+
+    # Test navigation
+    print()
+    print("4. Testing navigation to Pokemon Center...")
+    print("   (Watch the browser window)")
+
+    url = "https://www.pokemoncenter.com/category/tcg-cards"
+    html = browser.get_page(url, wait_time=5)
+
+    print(f"   [OK] Page loaded - {len(html)} bytes")
+
+    # Check for CAPTCHA
+    print()
+    print("5. Checking for bot detection...")
+    if browser.check_for_captcha():
+        print("   [!] CAPTCHA/Challenge detected!")
+        print("   The browser window is open - solve it manually if needed")
+        print("   Waiting up to 60 seconds...")
+        browser.wait_for_captcha_solve(timeout=60)
+    else:
+        print("   [OK] No CAPTCHA detected! Stealth mode working.")
+
+    # Show some page info
+    print()
+    print("6. Page analysis...")
+    from bs4 import BeautifulSoup
+    soup = BeautifulSoup(html, 'html.parser')
+    title = soup.title.string if soup.title else "No title"
+    print(f"   Page title: {title}")
+
+    # Count potential product elements
+    products = soup.select("[data-testid='product-card'], .product-card, a[href*='/product/']")
+    print(f"   Potential product elements: {len(products)}")
+
+    print()
+    print("=" * 60)
+    print("TEST COMPLETE")
+    print("=" * 60)
+    print()
+    print("The browser window will stay open for 10 seconds so you can inspect it.")
+    print("Press Ctrl+C to close early.")
+
+    time.sleep(10)
+
+except KeyboardInterrupt:
+    print("\n   Interrupted by user")
+except Exception as e:
+    print(f"   [ERROR] {e}")
+    import traceback
+    traceback.print_exc()
+finally:
+    if browser:
+        print()
+        print("Closing browser...")
+        browser.stop()
+        print("Done!")