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.

requirements.txt

@@ -3,3 +3,13 @@ playwright-stealth>=1.0.6
 requests>=2.31.0
 schedule>=1.2.1
 beautifulsoup4>=4.12.0
+flask>=3.0.0
+flask-cors>=4.0.0
+psutil>=5.9.0
+undetected-chromedriver>=3.5.0
+selenium>=4.15.0
+setuptools>=70.0.0  # Required for Python 3.13+ (distutils compatibility)
+discord.py>=2.3.0  # Discord bot for location-based store search
+nltk>=3.8.0  # Sentiment analysis using VADER
+pytest>=8.0.0  # Testing framework
+pytest-cov>=4.0.0  # Coverage reporting