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.

tools/warmup.py

@@ -0,0 +1,74 @@
+"""
+Warmup tool for sites with CAPTCHA/bot protection.
+Run this before the main monitor to solve CAPTCHAs manually.
+
+Usage:
+    python tools/warmup.py gamestop
+    python tools/warmup.py all
+"""
+
+import sys
+import os
+
+# Add parent directory to path
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+import logging
+from scrapers.gamestop import warmup_gamestop
+
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s - %(name)s - %(levelname)s - %(message)s"
+)
+logger = logging.getLogger(__name__)
+
+
+def warmup_all():
+    """Warm up all sites that need it"""
+    results = {}
+
+    logger.info("=" * 50)
+    logger.info("Starting warmup for GameStop...")
+    logger.info("=" * 50)
+    results["gamestop"] = warmup_gamestop()
+
+    # Add more sites here as needed
+    # results["pokemoncenter"] = warmup_pokemoncenter()
+
+    logger.info("=" * 50)
+    logger.info("Warmup Results:")
+    for site, success in results.items():
+        status = "OK" if success else "FAILED"
+        logger.info(f"  {site}: {status}")
+    logger.info("=" * 50)
+
+    return all(results.values())
+
+
+def main():
+    if len(sys.argv) < 2:
+        print(__doc__)
+        print("\nAvailable sites: gamestop, all")
+        sys.exit(1)
+
+    site = sys.argv[1].lower()
+
+    if site == "gamestop":
+        success = warmup_gamestop()
+    elif site == "all":
+        success = warmup_all()
+    else:
+        print(f"Unknown site: {site}")
+        print("Available sites: gamestop, all")
+        sys.exit(1)
+
+    if success:
+        logger.info("Warmup completed successfully!")
+        sys.exit(0)
+    else:
+        logger.error("Warmup failed or timed out")
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()