feat: 在文档中添加 CLI 参数说明，支持通过命令行临时指定交易所

src/index.tsx

@@ -4,9 +4,17 @@ import { App } from "./ui/App";
 import { setupGlobalErrorHandlers } from "./runtime-errors";
 import { parseCliArgs, printCliHelp } from "./cli/args";
 import { startStrategy } from "./cli/strategy-runner";
+import { resolveExchangeId } from "./exchanges/create-adapter";
 
 setupGlobalErrorHandlers();
 const options = parseCliArgs();
+// If user specifies --exchange, override environment-based resolution for this process
+if (options.exchange) {
+  // Ensure downstream calls to resolveExchangeId() pick the CLI value.
+  // We set both common env keys respected by resolveExchangeId.
+  process.env.EXCHANGE = options.exchange;
+  process.env.TRADE_EXCHANGE = options.exchange;
+}
 
 if (options.help) {
   printCliHelp();