health: report whether image search actually works; don't eat $ as math

images on web-search answers, via Tavily

deploy hardening: access gate, rate limiting, spend guard, env CORS

topic toggle takes auction priority when its model bids confidently

hedged speculative draft with user topic toggle

checkpoint: current behavior before latency work

AuctionRouter: cost-aware multi-agent LLM router with auction-based selection and verification-gated escalation