fix: ignore corrupted opus packets

bot.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import asyncio
+import logging
 import os
 import shutil
 import uuid
@@ -9,6 +10,8 @@ from pathlib import Path
 import discord
 from discord import app_commands
 from discord.ext import commands, voice_recv
+from discord.ext.voice_recv import opus as voice_recv_opus
+from discord.opus import OpusError
 from dotenv import load_dotenv
 
 import config
@@ -16,6 +19,29 @@ from helpers import chunk_message, command_channel_error
 from openrouter_client import summarize, transcribe
 from voice import MeetingRecorder
 
+log = logging.getLogger(__name__)
+
+_original_decode_packet = voice_recv_opus.PacketDecoder._decode_packet
+
+
+def _safe_decode_packet(self, packet):
+    try:
+        return _original_decode_packet(self, packet)
+    except OpusError as exc:
+        log.warning("Dropping corrupted opus packet for ssrc %s: %s", self.ssrc, exc)
+        if packet:
+            return packet, b""
+        try:
+            next_packet = self._buffer.peek_next()
+            if next_packet is not None:
+                return packet, self._decoder.decode(next_packet.decrypted_data, fec=True)
+            return packet, self._decoder.decode(None, fec=False)
+        except Exception:
+            return packet, b""
+
+
+voice_recv_opus.PacketDecoder._decode_packet = _safe_decode_packet
+
 load_dotenv()
 
 TOKEN = os.getenv("DISCORD_BOT_TOKEN")