fix: update from duckduckgo-search to ddgs #27
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This PR updates the
WebAgent's fallback search to use theddgslibrary. Theduckduckgo_searchpackage has been officially renamed toddgs.The previous fallback implementation, which relied on manual
requeststo the DuckDuckGo HTML endpoint and regex scraping (_scrape_search_resultsand_get_duckduckgo_instant_answer), has stopped working and now consistently returns an empty list.This change replaces the broken scraping logic with a simpler, more robust implementation using the
DDGS.text()method from the newddgslibrary. This restores the fallback search functionality.