[
  {"url": "https://competitor.example/pricing", "label": "Competitor A", "title": "Pricing — Competitor A", "text": "Paste the page text you have now (replace me)", "previousText": "Optional: the earlier version to compare with — leave it out and the stored snapshot is used"},
  {"url": "https://competitor.example/changelog", "label": "Competitor A", "text": "One object per page — keep the field names, add the optional ones from the List-mode rows table"}
]