- content script debounces window scroll (250ms per pause, like inputs)
  into a "scroll" step; inner-container scrolls are ignored (they bubble
  from the page, so only document/documentElement targets count)
- replay sends replay_scroll to the content script, scaling recorded
  offsets to the current viewport
- "scroll" step type in shared API + server validation; timeline icon,
  AI-prompt coords line and stepTypes i18n (en/ru/uk)
- e2e: tall test page + scroll assertion; wait for composer focus
  instead of fixed delays (full-page stitch can take a while); mkdir
  /tmp/ltt-shots for video download; debug log on failure

Co-Authored-By: Claude Code <noreply@anthropic.com>