Add comprehensive error handling to prevent process crashes

- Global uncaughtException/unhandledRejection handlers in index.ts
- FFmpeg stdout/stderr stream error handlers in player.ts
- HTTP server and WebSocket server error handlers in server.ts
- Safe WebSocket broadcast with try-catch in websocket.ts
- Catch async errors from textMessage handler in instance.ts
- Reset voiceFramesSent counter on reconnect in client.ts

https://claude.ai/code/session_01EjpEsC2GCsvwbu4n3XC8EE

src/web/websocket.ts

@@ -39,7 +39,11 @@ export function setupWebSocket(
     const message = JSON.stringify(data);
     for (const client of clients) {
       if (client.readyState === WebSocket.OPEN) {
-        client.send(message);
+        try {
+          client.send(message);
+        } catch {
+          clients.delete(client);
+        }
       }
     }
   };