md — render Markdown as colored ANSI for the terminal, or convert to HTML

RENDER (pipe a markdown file in, get colored output back):
  cat README.md | curl --data-binary @- https://fleet-md.0exec.com
  cat README.md | curl --data-binary @- 'https://fleet-md.0exec.com?to=ansi'    # default — terminal colors
  cat README.md | curl --data-binary @- 'https://fleet-md.0exec.com?to=ansi&width=80'  # wrap at 80 cols
  cat README.md | curl --data-binary @- 'https://fleet-md.0exec.com?to=html'    # sanitized HTML
  cat README.md | curl --data-binary @- 'https://fleet-md.0exec.com?to=plain'   # strip to plain text

EXAMPLES:
  echo '# Hi\n\nsome **bold** text' | curl --data-binary @- https://fleet-md.0exec.com
  git log -1 --format='%B' | curl --data-binary @- https://fleet-md.0exec.com     # render a commit message
  curl -s https://raw.githubusercontent.com/you/repo/main/README.md \
    | curl --data-binary @- https://fleet-md.0exec.com                            # read any README in your terminal

Notes:
  * --data-binary @- streams stdin verbatim; plain -d would mangle newlines.
  * ?to=ansi (default) emits ANSI color escapes — pipe straight to your terminal.
  * ?to=html runs goldmark + bluemonday UGCPolicy; the HTML is sanitized, safe to embed.
  * Max body 1 MiB. Empty body is a 400.
  * zsh "no matches found"? Quote any URL with a ?  e.g. 'https://fleet-md.0exec.com/?to=html'.