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[jayanthmankavil]

Implement title extraction and integrate into backend

• Added functionality to extract titles from web pages and send them to the backend via the /update endpoint.
• Integrated title extraction into the similarity system, storing titles in metadata.
• Implemented fallback to display domain names when titles are unavailable.
• Updated frontend to display truncated titles and clean URLs using the extractDomain function.
• Refined search results to include titles, URLs, and context.