Extract currently-in-force US federal regulations from the Electronic Code of Federal Regulations (eCFR). Give it Title/Part pairs and get one row per section with citation, heading and full body text as clean JSON.
Real fetch-parse-emit loop: per-{title, part} target, resolves the
in-force date via titles.json, fetches the GPO full-part XML, and
parses every DIV8 TYPE="SECTION" (including subject-group-nested
ones) into one ResultRow per section.
Fault isolation per target (REQ-4) — a bad title/part, a transport
failure exhausted after retries, or a parse error skips only that
target; the run still finishes SUCCEEDED.
Retry/backoff on 408/429/503 honouring Retry-After; explicit
Accept-Encoding header (the endpoint 406s without one).
PPE pricing set to the fleet standard: actor-start $0.20, result
$0.002 (~$2.20 / 1 000 results).
