Exempt title from the vendor-token check. Truncate snippets to 160
chars and clip all four packs to the same per-query k. run.py fails
cached replies with a rerun message instead of a config mismatch.
run.py records one named config at a time. Sift dumps fail if
sizes.sources_ok does not match --config. Hermes Tavily uses the
live-tool request shape, not sift. Raw dumps stay gitignored.
kyle