Notes vs Warn, Tavily-only min_score, post-merge domain filter, per-query RRF, sequential extra queries, canonical cache key, Tavily body constraints, SearXNG param vs bang, log/error strings.
Native /v1/search knobs (domains, time, topic, exact match, min_score) plus multi-query URL dedupe. Tavily passthrough; SearXNG approximations with warnings. No crawl/map/research. Claude reviews, titan implements.