tradingview/charting-library-examples ? reverse-engineered prompt

Build me a set of working demo apps that show how to embed the TradingView Charting Library into a few common web and mobile setups.

I want a simple example for React, React with TypeScript, Next.js, Nuxt, Vue, Solid, Ruby on Rails, plus mobile wrappers for Android and iOS. Each one should load the chart cleanly, connect to a basic sample data feed, and show the library inside the app the way a real project would use it.

Keep the demos easy to run, with clear setup steps, sensible defaults, and a polished look so someone can open each folder and understand the integration quickly. If you need to check current setup details from the docs online, go ahead and do that.