Natural-language Q&A over a US coordinate (LLM-backed)

Plans which catalog fields to fetch, fetches them, and synthesizes a cited answer. Much slower than /v1/fetch: typically ~6-20 s, hard-bounded at 110 s (then a 504 ask_timeout). Set a client timeout of at least 120 s. For progressive output (first tokens ~5-7 s) use POST /v1/ask/stream. Returns 429 ask_busy when the fleet-wide concurrency cap is saturated; retryable failures carry a Retry-After header.