deriv-smartcharts

Add the Deriv SmartCharts price chart (the @deriv-com/smartcharts-champion package) to an application that uses the New Deriv API Options platform, and drive its barriers and contract markers from the app's trading state. Use when the chart selection guide escalates to SmartCharts or the user names it — a terminal-grade chart with built-in technical indicators, drawing tools, an in-chart symbol browser, or Deriv's standard contract markers and barriers without building an overlay layer — even if the user just says "the same chart Deriv uses", "a full trading terminal", "draw the barrier on the chart", or "mark my trades on the chart". A chart request that names no library defaults to Lightweight Charts; read the guide first. Not for a second WebSocket, for Legacy API compatibility, or for non-Deriv charting libraries.