v0.12.1

Added

• Embed the widget on other sites. A standalone bundle
  (dist/widget/escalated-widget.js, exported as
  @escalated-dev/escalated/widget) that backends serve at
  {widgetPath}/embed.js. Loaded from there, it finds its backend without
  data-base-url. Host parameters set from data-* attributes or
  window.EscalatedWidget: inline mode for an on-page support form, a tab
  subset and default tab, a preselected or locked department, visitor prefill,
  title and greeting, open on load, a hidden launcher, and metadata sent with
  tickets and chats when /config returns accepts_metadata: true. A
  JavaScript API (open, close, toggle, identify, setMetadata,
  setDepartment, mount, destroy) and an escalated:widget-ready event.
  See docs/embedding-the-widget.md.
• Escalated/Admin/Settings shows a Sites that can embed the widget field
  (widget_allowed_origins) when the backend supports it, and the embed
  snippet now uses an absolute script URL.

Fixed

• window.EscalatedWidget.open() and close() now drive the widget's own
  state instead of toggling a CSS class that the next render removed.
• The widget starts on the first tab it can show, instead of an empty panel
  when the knowledge base is off.
• Mention suggestions ignore stale searches, IME composition and key events
  another control already handled are respected, queued socket events after a
  literal unsubscribe are dropped, chat typing indicators are throttled per
  session, and report exports show errors instead of downloading a failed
  response (#195).