Zester v0.6.8

Added

• Colored module documentation in the terminal: sys.doc replies and the
  offline zester doc render (module, family, and index forms) are colorized
  client-side over the pinned plain-text grammar — module headers, section
  headings, parameter names/flags (required yellow, sensitive red), effects,
  examples, and notes by severity. The wire format and RenderText stay
  byte-identical (stripping the ANSI codes reproduces the plain render exactly,
  test-pinned); color follows the existing TTY + NO_COLOR + --no-color
  rules. cmd.run and other module output is never rewritten.
• New global CLI flag --force-color: force colored output when stdout is not
  a TTY (piping to less -R, CI captures). An explicit request, so it overrides
  the NO_COLOR env; --no-color still always wins.