Move hardware results into the sections implementers follow: history counts are 4-byte units, frames can be 160 bytes, transfers are padded and end with a length field, and status and marks are raw values. Add real frame vectors and the capture replay format so other languages can test. Change history_count to request units, with a margin for stop records. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>