Add diagnostic logs for Opus codec initialization and audio multicast

- Log at InitOpusCodec: FVoiceModule availability, encoder/decoder creation, net role
- Log at HandleAudioReceived: warn once if encoder is null or role is not Authority
- These fire unconditionally (not behind bDebug) to catch the root cause

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Unreal/PS_AI_Agent/Plugins/PS_AI_ConvAgent/Source/PS_AI_ConvAgent/Private/PS_AI_ConvAgent_ElevenLabsComponent.cpp

@@ -638,6 +638,19 @@ void UPS_AI_ConvAgent_ElevenLabsComponent::HandleAudioReceived(const TArray<uint
 	}
 
 	// Network: Opus-compress and broadcast to all clients before local playback.
+	if (GetOwnerRole() != ROLE_Authority || !OpusEncoder.IsValid())
+	{
+		static bool bWarnedOnce = false;
+		if (!bWarnedOnce)
+		{
+			bWarnedOnce = true;
+			UE_LOG(LogPS_AI_ConvAgent_ElevenLabs, Warning,
+				TEXT("[NET-SRV] Cannot multicast audio! Role=%d (need %d=Authority), OpusEncoder=%s, FVoiceModule=%s"),
+				static_cast<int32>(GetOwnerRole()), static_cast<int32>(ROLE_Authority),
+				OpusEncoder.IsValid() ? TEXT("VALID") : TEXT("NULL"),
+				FVoiceModule::IsAvailable() ? TEXT("available") : TEXT("UNAVAILABLE"));
+		}
+	}
 	if (GetOwnerRole() == ROLE_Authority && OpusEncoder.IsValid())
 	{
 		uint32 CompressedSize = static_cast<uint32>(OpusWorkBuffer.Num());
@@ -1453,10 +1466,16 @@ void UPS_AI_ConvAgent_ElevenLabsComponent::MulticastAgentStartedGenerating_Imple
 // ─────────────────────────────────────────────────────────────────────────────
 void UPS_AI_ConvAgent_ElevenLabsComponent::InitOpusCodec()
 {
-	if (!FVoiceModule::IsAvailable()) return;
+	if (!FVoiceModule::IsAvailable())
+	{
+		UE_LOG(LogPS_AI_ConvAgent_ElevenLabs, Warning,
+			TEXT("[OPUS] FVoiceModule NOT available — Opus codec disabled. Network audio will NOT work."));
+		return;
+	}
 	FVoiceModule& VoiceModule = FVoiceModule::Get();
 
-	if (GetOwnerRole() == ROLE_Authority)
+	const ENetRole Role = GetOwnerRole();
+	if (Role == ROLE_Authority)
 	{
 		OpusEncoder = VoiceModule.CreateVoiceEncoder(
 			PS_AI_ConvAgent_Audio_ElevenLabs::SampleRate,
@@ -1469,6 +1488,12 @@ void UPS_AI_ConvAgent_ElevenLabsComponent::InitOpusCodec()
 		PS_AI_ConvAgent_Audio_ElevenLabs::Channels);
 
 	OpusWorkBuffer.SetNumUninitialized(8 * 1024); // 8 KB scratch buffer for Opus encode/decode
+
+	UE_LOG(LogPS_AI_ConvAgent_ElevenLabs, Log,
+		TEXT("[OPUS] Init complete — Role=%d Encoder=%s Decoder=%s"),
+		static_cast<int32>(Role),
+		OpusEncoder.IsValid() ? TEXT("OK") : TEXT("NULL"),
+		OpusDecoder.IsValid() ? TEXT("OK") : TEXT("NULL"));
 }
 
 // ─────────────────────────────────────────────────────────────────────────────