fix: export FeedClient from TypeScript SDK

Mirrors the Python export fix in this PR. Adds FeedClient to the
top-level pmxtjs exports and the default pmxt object so consumers can
write `import { FeedClient } from 'pmxtjs'` or `pmxt.FeedClient(...)`.

Co-authored-by: nanookclaw <nanookclaw@users.noreply.github.com>

Author: realfishsam

sdks/typescript/index.ts

@@ -22,10 +22,13 @@
 import { Exchange, Polymarket, Kalshi, KalshiDemo, Limitless, Myriad, Probable, Baozi, Opinion, Metaculus, Smarkets, PolymarketUS, GeminiTitan, Hyperliquid, SuiBets, Mock } from "./pmxt/client.js";
 import { Router } from "./pmxt/router.js";
 import { ServerManager } from "./pmxt/server-manager.js";
+import { FeedClient } from "./pmxt/feed-client.js";
 import * as models from "./pmxt/models.js";
 import * as errors from "./pmxt/errors.js";
 
 export { Exchange, Polymarket, Kalshi, KalshiDemo, Limitless, Myriad, Probable, Baozi, Opinion, Metaculus, Smarkets, PolymarketUS, GeminiTitan, Hyperliquid, SuiBets, Mock, PolymarketOptions } from "./pmxt/client.js";
+export { FeedClient } from "./pmxt/feed-client.js";
+export type { Ticker, Tickers, OHLCV, Market as FeedMarket, OracleRound, FeedClientOptions } from "./pmxt/feed-client.js";
 export { Router } from "./pmxt/router.js";
 export { ServerManager } from "./pmxt/server-manager.js";
 export { HOSTED_URL, LOCAL_URL, ENV, resolvePmxtBaseUrl } from "./pmxt/constants.js";
@@ -87,6 +90,7 @@ const pmxt = {
     Mock,
     Router,
     ServerManager,
+    FeedClient,
     server,
     stopServer,
     restartServer,

sdks/typescript/tests/public-exports.test.ts

@@ -0,0 +1,19 @@
+import * as pmxt from '../index';
+import { FeedClient as DirectFeedClient } from '../pmxt/feed-client';
+
+describe('public exports', () => {
+  it('exports FeedClient as a top-level named export', () => {
+    expect(pmxt.FeedClient).toBeDefined();
+    expect(pmxt.FeedClient).toBe(DirectFeedClient);
+  });
+
+  it('exposes FeedClient on the default pmxt object', () => {
+    expect(pmxt.default.FeedClient).toBeDefined();
+    expect(pmxt.default.FeedClient).toBe(DirectFeedClient);
+  });
+
+  it('FeedClient is constructable from the top-level export', () => {
+    const client = new pmxt.FeedClient('chainlink');
+    expect(client).toBeInstanceOf(DirectFeedClient);
+  });
+});