Add WebRTC connection manager and fix race condition

- Add RondevuConnection class for high-level WebRTC management
- Handles offer/answer exchange, ICE candidates, and data channels
- Fix race condition in answer() method (register answerer before sending ICE)
- Add event-driven API (connecting, connected, disconnected, error, datachannel, track)
- Update README with connection manager examples
- Export new connection types and classes

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/index.ts

@@ -1,37 +1,31 @@
 /**
  * @xtr-dev/rondevu-client
- * WebRTC peer signaling and discovery client
+ * WebRTC peer signaling and discovery client with topic-based discovery
  */
 
-// Export main WebRTC client class
+// Export main client class
 export { Rondevu } from './rondevu.js';
+export type { RondevuOptions } from './rondevu.js';
 
-// Export connection class
-export { RondevuConnection } from './connection.js';
+// Export authentication
+export { RondevuAuth } from './auth.js';
+export type { Credentials, FetchFunction } from './auth.js';
 
-// Export low-level signaling API (for advanced usage)
-export { RondevuAPI } from './client.js';
-
-// Export all types
+// Export offers API
+export { RondevuOffers } from './offers.js';
 export type {
-  // WebRTC types
-  RondevuOptions,
-  ConnectionRole,
-  RondevuConnectionParams,
-  RondevuConnectionEvents,
-  WebRTCPolyfill,
-  // Signaling types
-  Side,
   CreateOfferRequest,
-  CreateOfferResponse,
-  AnswerRequest,
-  AnswerResponse,
-  PollRequest,
-  PollOffererResponse,
-  PollAnswererResponse,
-  PollResponse,
-  VersionResponse,
-  HealthResponse,
-  ErrorResponse,
-  RondevuClientOptions,
-} from './types.js';
+  Offer,
+  IceCandidate,
+  TopicInfo
+} from './offers.js';
+
+// Export bloom filter
+export { BloomFilter } from './bloom.js';
+
+// Export connection manager
+export { RondevuConnection } from './connection.js';
+export type {
+  ConnectionOptions,
+  RondevuConnectionEvents
+} from './connection.js';