Render assistant chat output as GFM Markdown (tables, lists, code, headings), lazy-loaded so the ~150 KB renderer only ships when an assistant message shows. Hardened per review: no <img> (exfiltration-beacon guard), no raw HTML, error-boundary + stale-chunk recovery around the lazy chunk, GFM column alignment, and memoized parsing.
Co-authored-by: Steve Dudenhoeffer <[email protected]>
