Use Gemini CLI (@google/gemini-cli) to do web search / fact-finding and return a sourced summary. Use when the user asks “why did X happen today”, “what’s the latest news”, “search the web”, “find sources/links”, or any task requiring up-to-date info. Prefer this over other search tools when Gemini is available but slow; run it with a TTY, wait longer, and verify source quality.