I need a browser-native trading platform that reproduces the core experience of MetaTrader 5. The build must include full trading functionality (order placement, modification, history, account management), professional-grade charting with multiple indicators and drawing tools, plus a real-time news feed that streams seamlessly alongside the charts. The engine must handle live market data and execution for Forex, Stocks, and Cryptocurrencies alike, switching between instruments without any reloads. I intend to host and scale this as a pure web application, so every component—from price feeds and order routing to chart rendering—has to be delivered through the browser with minimal latency. Responsive layout for desktop and mobile browsers is important, but I am not looking for separate native apps. Please outline the tech stack you propose, sample latency figures you can realistically hit for live quotes, and any existing charting or trading frameworks you plan to leverage. A short demo or previous work link will help us move quickly. Once we agree on the stack, I will supply exchange/API credentials and brand assets so you can implement authentication, user profiles, and the UI skin.