DuckDuckGo's HTML endpoint rate-limits after enough requests, and a
rate-limited response is indistinguishable from a genuine empty result —
which is exactly what burned a full 12-turn research run on 13 consecutive
"No results found" responses. Swapping to a local SearXNG instance's JSON
API (no HTML scraping needed) fixes both problems: SearXNG spreads queries
across multiple upstream engines instead of hammering one, and this
machine already runs an instance.
This tool is explicitly local-only and never released, so the base URL is
a plain default (localhost:8080) overridable via SEARXNG_URL, not a
general-purpose config surface. Evaluated the two third-party SearXNG
crates on crates.io first (searxng, searxng-client) — both are
single-maintainer v0.1.0 packages with no adoption signal and no official
alternative exists, so a hand-rolled reqwest + serde call was the better
bet for something this small.
Drops the DuckDuckGo-specific HTML parsing (parse_search_results,
resolve_ddg_redirect, the .result/.result__a/.result__snippet scraper
selectors) entirely — fetch_page's extract_readable_text still needs
scraper for arbitrary fetched pages, so that dependency stays.
Adds an #[ignore]'d live smoke test (search_web_returns_real_results_from_local_searxng)
for manually verifying against a running instance; not run by default
since there's no CI environment with SearXNG available.
c150c67f1e