uploads-v0.12.0

Minor Changes

• e6538ba: New uploads screenshot <url|file.html> command: capture a URL or a local
  .html file and host it in one step, sharing the put upload pipeline
  (--frame, optimize-by-default, --pr/--issue attachment + --comment).
  Two capture backends selected by --via auto|local|remote (default auto,
  or UPLOADS_SCREENSHOT_VIA): local drives an already-installed
  Chrome/Chromium via playwright-core (an optional dependency — no browser
  download), while remote renders server-side through a new uploads.sh
  render endpoint. auto prefers local when a browser is found, else falls
  back to remote; localhost/private-network targets and .html files stay
  local-only. Also available as an MCP tool and reported in uploads doctor.