Connects to Binance's public kline WebSocket from the browser, streams
every tick through RSI(14), MACD(12,26,9) and Bollinger(20, 2.0) via
the WebAssembly bindings, and flags BUY/SELL candidates when all
three indicators agree. No orders are placed. Mirrors
examples/python/live_trading.py and
examples/node/live_trading.js.