Fix URL normalization: strip trailing slash from start_url

Fix Amazon crawling: Add Start URL Retry logic and more block keywords

Fix crawl evasion: Add WAF block detection to Tier 1 fetch

Fix syntax errors: Restore init, fix indentation, remove invalid arg

Ultra-fast crawler update: Caching, SSL disable, and Thread tuning

Optimize crawler speed: BFS + Reduced delays

Fix syntax error in crawler

Optimize memory usage to prevent crashes

Fix crawling for eminentcoders.com

Initial commit for deployment