[
  { "layout": "title",       "content": { "title": "Demo", "subtitle": "All Layouts", "author": "tester", "date": "2026-05-22" } },
  { "layout": "section",     "content": { "number": "01", "title": "Intro" } },
  { "layout": "bullets",     "content": { "title": "Points", "bullets": ["alpha","beta","gamma"], "footnote": "src" } },
  { "layout": "two-column",  "content": { "title": "Compare", "left": { "heading": "L", "bullets": ["x","y"] }, "right": { "heading": "R", "bullets": ["p","q"] } } },
  { "layout": "table",       "content": { "title": "Tab", "headers": ["A","B","C"], "rows": [["1","2","3"],["4","5","6"]] } },
  { "layout": "chart",       "content": { "title": "Sales", "chart_type": "bar", "data": { "categories": ["Q1","Q2","Q3"], "series": [{ "name": "Rev", "values": [10,20,15] }] } } },
  { "layout": "quote",       "content": { "quote": "Hello", "attribution": "anon" } },
  { "layout": "custom",      "content": { "elements": [{ "type": "text", "text": "Free", "x": 1, "y": 1, "w": 4, "h": 1 }] } },
  { "layout": "closing",     "content": { "message": "Thank you", "contact": "me@x.com" } }
]
