Fix multiple connect events and add leave method

- Add hasConnected flag to prevent duplicate connect events
- Add leave() method to RondevuConnection to end sessions
- Add leave() API method to call /leave endpoint
- Version 0.3.5

The connect event will now only fire once per connection,
fixing the issue where it could fire multiple times as the
WebRTC connectionState transitions.

The leave() method allows either peer to end the session
by deleting the offer from the server.

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

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

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@xtr-dev/rondevu-client",
-  "version": "0.3.4",
+  "version": "0.3.5",
   "description": "TypeScript client for Rondevu peer signaling and discovery server",
   "type": "module",
   "main": "dist/index.js",

src/client.ts

@@ -186,4 +186,23 @@ export class RondevuAPI {
       method: 'GET',
     });
   }
+
+  /**
+   * Ends a session by deleting the offer from the server
+   *
+   * @param code - The offer code
+   * @returns Success confirmation
+   *
+   * @example
+   * ```typescript
+   * const api = new RondevuAPI({ baseUrl: 'https://example.com' });
+   * await api.leave('my-offer-code');
+   * ```
+   */
+  async leave(code: string): Promise<{ success: boolean }> {
+    return this.request<{ success: boolean }>('/leave', {
+      method: 'POST',
+      body: JSON.stringify({ code }),
+    });
+  }
 }

src/connection.ts

@@ -20,6 +20,7 @@ export class RondevuConnection extends EventEmitter {
   private connectionTimer?: ReturnType<typeof setTimeout>;
   private isPolling: boolean = false;
   private isClosed: boolean = false;
+  private hasConnected: boolean = false;
   private wrtc?: WebRTCPolyfill;
   private RTCIceCandidate: typeof RTCIceCandidate;
 
@@ -94,9 +95,12 @@ export class RondevuConnection extends EventEmitter {
 
     switch (state) {
       case 'connected':
-        this.clearConnectionTimeout();
-        this.stopPolling();
-        this.emit('connect');
+        if (!this.hasConnected) {
+          this.hasConnected = true;
+          this.clearConnectionTimeout();
+          this.stopPolling();
+          this.emit('connect');
+        }
         break;
 
       case 'disconnected':
@@ -283,6 +287,20 @@ export class RondevuConnection extends EventEmitter {
     }
   }
 
+  /**
+   * Leave the session by deleting the offer on the server and closing the connection
+   * This ends the session for all connected peers
+   */
+  async leave(): Promise<void> {
+    try {
+      await this.client.leave(this.id);
+    } catch (err) {
+      // Ignore errors - session might already be expired
+      console.debug('Leave error (ignored):', err);
+    }
+    this.close();
+  }
+
   /**
    * Close the connection and cleanup resources
    */

src/rondevu.ts

@@ -62,7 +62,7 @@ export class Rondevu {
   private async checkServerVersion(): Promise<void> {
     try {
       const { version: serverVersion } = await this.api.health();
-      const clientVersion = '0.3.4'; // Should match package.json
+      const clientVersion = '0.3.5'; // Should match package.json
 
       if (!this.isVersionCompatible(clientVersion, serverVersion)) {
         console.warn(