- chunker: framed seq chunks, reassemble, setChunkSize - multiplex: closeAll, getStream, per-stream byte counters - backpressure: low/high water marks, bufferedBytes - tee: branchBytes, removeBranch, depth guard - transform: pipeTo and outbound backpressure - resume-token: labeled checkpoints, clearTokens, bytesFromOffset - Update category README and chunker tests Co-authored-by: Cursor <[email protected]>