Recording: capture page scroll as a "scroll" step with replay support ...

- 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>

AI prompt generator on the report page ...

The header gains an "AI prompt" button: it builds a ready-to-paste
bug-fix prompt for a developer's AI coding agent — description, page
URL, element context (selector, classes, text, test attributes),
environment, recorded steps and token-scoped attachment links — and
opens it in an editable dialog with a copy button. Labels follow the
panel language via i18n (en/ru).

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