overhaul web search and fetch tooling#117
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Summary
WebSearch returned empty results ~84% of the time because the default no-key DuckDuckGo backend is bot-blocked in 2026. This reworks WebSearch to be API-first (Tavily/Brave/SearXNG) with reliable-provider fallback, treats an empty result as a failure instead of "no results exist", and returns actionable setup guidance (plus a new
/searchcommand) when nothing is configured. WebFetch is overhauled for lossless, high-quality extraction: dom_smoothie main-content readability,encoding_rscharset decoding, content-type routing (JSON pretty-print,pdf_oxidePDF text, typed binary notices), offset/max_length pagination, BM25 query-guided passages, page metadata + summary, and an automatic headless-chromium render fallback for JavaScript pages.Verification
cargo fmt --all --check— passedcargo clippy --workspace --all-targets -- -D warnings— passed (0 warnings)cargo test --workspace— passed (717 tests)