[Bug] web.search returns empty results on some queries

[Vitalcheffe]

Description

The DuckDuckGo scraping in web.search sometimes returns empty results even when results exist on duckduckgo.com.

Steps to reproduce

1. Call web.search with query: "latest AI research papers 2026"
2. Result: empty
3. Search same query on duckduckgo.com → results exist

Investigation

DDG might be returning a different HTML structure for certain queries. The cheerio selectors may need updating.

Environment

• Node: 20.x
• WRAP: v7.0.0