diff --git a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Api/Program.cs b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Api/Program.cs
index 8be0c51..a1f2b48 100644
--- a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Api/Program.cs
+++ b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Api/Program.cs
@@ -35,7 +35,7 @@ app.Use(async (context, next) =>
         return;
     }
 
-    if ((kind is "neo-hub-listen" or "neo-hub-proactive") && string.IsNullOrWhiteSpace(token))
+    if (kind is "neo-hub-listen" or "neo-hub-proactive" && string.IsNullOrWhiteSpace(token))
     {
         context.Response.StatusCode = StatusCodes.Status401Unauthorized;
         return;
diff --git a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/DefaultSttStrategySelector.cs b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/DefaultSttStrategySelector.cs
index ca5f8d0..68253eb 100644
--- a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/DefaultSttStrategySelector.cs
+++ b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/DefaultSttStrategySelector.cs
@@ -9,11 +9,8 @@ public sealed class DefaultSttStrategySelector(IEnumerable<ISttStrategy> strateg
     public Task<ISttStrategy> SelectAsync(TurnContext turn, CancellationToken cancellationToken = default)
     {
         var strategy = _strategies.FirstOrDefault(candidate => candidate.CanHandle(turn));
-        if (strategy is null)
-        {
-            throw new InvalidOperationException("No STT strategy can handle the current turn.");
-        }
-
-        return Task.FromResult(strategy);
+        return strategy is null
+            ? throw new InvalidOperationException("No STT strategy can handle the current turn.")
+            : Task.FromResult(strategy);
     }
 }
diff --git a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/IJiboRandomizer.cs b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/IJiboRandomizer.cs
index 27af9d6..1ae794b 100644
--- a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/IJiboRandomizer.cs
+++ b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/IJiboRandomizer.cs
@@ -9,11 +9,8 @@ public sealed class DefaultJiboRandomizer : IJiboRandomizer
 {
     public T Choose<T>(IReadOnlyList<T> items)
     {
-        if (items.Count == 0)
-        {
-            throw new InvalidOperationException("Cannot choose from an empty list.");
-        }
-
-        return items[Random.Shared.Next(items.Count)];
+        return items.Count == 0
+            ? throw new InvalidOperationException("Cannot choose from an empty list.")
+            : items[Random.Shared.Next(items.Count)];
     }
 }
diff --git a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/JiboCloudProtocolService.cs b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/JiboCloudProtocolService.cs
index d74cd2a..e50e501 100644
--- a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/JiboCloudProtocolService.cs
+++ b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/JiboCloudProtocolService.cs
@@ -317,7 +317,7 @@ public sealed class JiboCloudProtocolService(ICloudStateStore stateStore)
         }).ToArray());
     }
 
-    private ProtocolDispatchResult HandleLog(string operation, ProtocolEnvelope envelope)
+    private static ProtocolDispatchResult HandleLog(string operation, ProtocolEnvelope envelope)
     {
         return operation switch
         {
@@ -393,22 +393,16 @@ public sealed class JiboCloudProtocolService(ICloudStateStore stateStore)
 
     private ProtocolDispatchResult HandlePerson(string operation)
     {
-        if (operation.Equals("ListHolidays", StringComparison.OrdinalIgnoreCase))
-        {
-            return ProtocolDispatchResult.Ok(stateStore.GetHolidays());
-        }
-
-        return ProtocolDispatchResult.Ok(Array.Empty<object>());
+        return ProtocolDispatchResult.Ok(operation.Equals("ListHolidays", StringComparison.OrdinalIgnoreCase)
+            ? stateStore.GetHolidays()
+            : []);
     }
 
     private ProtocolDispatchResult HandleBackup(string operation)
     {
-        if (operation.Equals("List", StringComparison.OrdinalIgnoreCase))
-        {
-            return ProtocolDispatchResult.Ok(stateStore.GetBackups());
-        }
-
-        return ProtocolDispatchResult.Ok(Array.Empty<object>());
+        return operation.Equals("List", StringComparison.OrdinalIgnoreCase)
+            ? ProtocolDispatchResult.Ok(stateStore.GetBackups())
+            : ProtocolDispatchResult.Ok(Array.Empty<object>());
     }
 
     private ProtocolDispatchResult HandleKey(string operation, ProtocolEnvelope envelope)
diff --git a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/JiboInteractionService.cs b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/JiboInteractionService.cs
index f2e04bf..2bab65d 100644
--- a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/JiboInteractionService.cs
+++ b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/JiboInteractionService.cs
@@ -80,12 +80,10 @@ public sealed class JiboInteractionService(
             return "Good afternoon. I am happy to be here.";
         }
 
-        if (lowered.Contains("good night", StringComparison.Ordinal))
-        {
-            return "Good night. Sleep tight.";
-        }
-
-        return randomizer.Choose(catalog.GenericFallbackReplies).Replace("{transcript}", transcript, StringComparison.Ordinal);
+        return lowered.Contains("good night", StringComparison.Ordinal)
+            ? "Good night. Sleep tight."
+            : randomizer.Choose(catalog.GenericFallbackReplies)
+                .Replace("{transcript}", transcript, StringComparison.Ordinal);
     }
 
     private static string ResolveSemanticIntent(string loweredTranscript, string? clientIntent)
diff --git a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/JiboWebSocketService.cs b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/JiboWebSocketService.cs
index d20d0fb..d42679d 100644
--- a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/JiboWebSocketService.cs
+++ b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/JiboWebSocketService.cs
@@ -1,7 +1,6 @@
 using System.Text.Json;
 using Jibo.Cloud.Application.Abstractions;
 using Jibo.Cloud.Domain.Models;
-using Jibo.Runtime.Abstractions;
 
 namespace Jibo.Cloud.Application.Services;
 
diff --git a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/ProtocolToTurnContextMapper.cs b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/ProtocolToTurnContextMapper.cs
index e1abf15..26f4bcc 100644
--- a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/ProtocolToTurnContextMapper.cs
+++ b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/ProtocolToTurnContextMapper.cs
@@ -6,7 +6,7 @@ namespace Jibo.Cloud.Application.Services;
 
 public sealed class ProtocolToTurnContextMapper
 {
-    public TurnContext MapListenMessage(WebSocketMessageEnvelope envelope, CloudSession session, string messageType)
+    public static TurnContext MapListenMessage(WebSocketMessageEnvelope envelope, CloudSession session, string messageType)
     {
         var turnState = session.TurnState;
         var protocolOperation = messageType.ToLowerInvariant();
diff --git a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/ResponsePlanToSocketMessagesMapper.cs b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/ResponsePlanToSocketMessagesMapper.cs
index 70cb9a9..20d2097 100644
--- a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/ResponsePlanToSocketMessagesMapper.cs
+++ b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/ResponsePlanToSocketMessagesMapper.cs
@@ -6,7 +6,7 @@ namespace Jibo.Cloud.Application.Services;
 
 public sealed class ResponsePlanToSocketMessagesMapper
 {
-    public IReadOnlyList<SocketReplyPlan> Map(ResponsePlan plan, TurnContext turn, CloudSession session, bool emitSkillActions)
+    public static IReadOnlyList<SocketReplyPlan> Map(ResponsePlan plan, TurnContext turn, CloudSession session, bool emitSkillActions)
     {
         var speak = plan.Actions.OfType<SpeakAction>().FirstOrDefault();
         var skill = plan.Actions.OfType<InvokeNativeSkillAction>().FirstOrDefault();
@@ -18,50 +18,50 @@ public sealed class ResponsePlanToSocketMessagesMapper
         var clientIntent = ReadAttribute(turn, "clientIntent");
         var rules = ReadRules(turn, messageType);
         var outboundIntent = string.Equals(messageType, "CLIENT_NLU", StringComparison.OrdinalIgnoreCase) && !string.IsNullOrWhiteSpace(clientIntent)
-            ? clientIntent!
+            ? clientIntent
             : plan.IntentName ?? "unknown";
         var outboundAsrText = string.Equals(messageType, "CLIENT_NLU", StringComparison.OrdinalIgnoreCase) && !string.IsNullOrWhiteSpace(clientIntent)
-            ? clientIntent!
+            ? clientIntent
             : transcript;
         var entities = ReadEntities(turn, messageType);
-        var messages = new List<SocketReplyPlan>();
-
-        messages.Add(new SocketReplyPlan(JsonSerializer.Serialize(new
+        var messages = new List<SocketReplyPlan>
         {
-            type = "LISTEN",
-            transID = transId,
-            data = new
+            new(JsonSerializer.Serialize(new
             {
-                asr = new
+                type = "LISTEN",
+                transID = transId,
+                data = new
                 {
-                    confidence = 0.95,
-                    final = true,
-                    text = outboundAsrText
-                },
-                nlu = new
-                {
-                    confidence = 0.95,
-                    intent = outboundIntent,
-                    rules,
-                    entities
-                },
-                match = new
-                {
-                    intent = outboundIntent,
-                    rule = rules.FirstOrDefault() ?? string.Empty,
-                    score = 0.95
+                    asr = new
+                    {
+                        confidence = 0.95,
+                        final = true,
+                        text = outboundAsrText
+                    },
+                    nlu = new
+                    {
+                        confidence = 0.95,
+                        intent = outboundIntent,
+                        rules,
+                        entities
+                    },
+                    match = new
+                    {
+                        intent = outboundIntent,
+                        rule = rules.FirstOrDefault() ?? string.Empty,
+                        score = 0.95
+                    }
                 }
-            }
-        })));
-
-        messages.Add(new SocketReplyPlan(JsonSerializer.Serialize(new
-        {
-            type = "EOS",
-            ts = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(),
-            msgID = CreateHubMessageId(),
-            transID = transId,
-            data = new { }
-        })));
+            })),
+            new(JsonSerializer.Serialize(new
+            {
+                type = "EOS",
+                ts = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(),
+                msgID = CreateHubMessageId(),
+                transID = transId,
+                data = new { }
+            }))
+        };
 
         if (emitSkillActions && speak is not null)
         {
@@ -73,7 +73,7 @@ public sealed class ResponsePlanToSocketMessagesMapper
         return messages;
     }
 
-    public IReadOnlyList<SocketReplyPlan> MapFallback(CloudSession session, string transId, IReadOnlyList<string> rules)
+    public static IReadOnlyList<SocketReplyPlan> MapFallback(CloudSession session, string transId, IReadOnlyList<string> rules)
     {
         return
         [
@@ -149,7 +149,7 @@ public sealed class ResponsePlanToSocketMessagesMapper
 
         return value switch
         {
-            JsonElement jsonElement when jsonElement.ValueKind == JsonValueKind.Object => jsonElement,
+            JsonElement { ValueKind: JsonValueKind.Object } jsonElement => jsonElement,
             IDictionary<string, object?> dictionary => dictionary,
             _ => new Dictionary<string, object?>()
         };
diff --git a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/WebSocketTurnFinalizationService.cs b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/WebSocketTurnFinalizationService.cs
index 166d651..21a16cd 100644
--- a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/WebSocketTurnFinalizationService.cs
+++ b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Application/Services/WebSocketTurnFinalizationService.cs
@@ -260,7 +260,7 @@ public sealed class WebSocketTurnFinalizationService(
         bool allowFallbackOnMissingTranscript,
         CancellationToken cancellationToken)
     {
-        var turn = turnContextMapper.MapListenMessage(envelope, session, messageType);
+        var turn = ProtocolToTurnContextMapper.MapListenMessage(envelope, session, messageType);
         var finalizedTurn = await ResolveTranscriptAsync(turn, session, cancellationToken);
         var turnState = session.TurnState;
         if (string.IsNullOrWhiteSpace(finalizedTurn.NormalizedTranscript) &&
@@ -278,7 +278,7 @@ public sealed class WebSocketTurnFinalizationService(
                 session.LastTranscript = string.Empty;
                 session.LastIntent = "heyJibo";
                 session.LastListenType = "fallback";
-                var fallbackReplies = replyMapper.MapFallback(session, turnState.TransId ?? session.LastTransId ?? string.Empty, turnState.ListenRules)
+                var fallbackReplies = ResponsePlanToSocketMessagesMapper.MapFallback(session, turnState.TransId ?? session.LastTransId ?? string.Empty, turnState.ListenRules)
                     .Select(map => new WebSocketReply { Text = map.Text, DelayMs = map.DelayMs })
                     .ToArray();
                 ResetBufferedAudio(session);
@@ -318,7 +318,7 @@ public sealed class WebSocketTurnFinalizationService(
         turnState.AwaitingTurnCompletion = false;
 
         var emitSkillActions = messageType != "CLIENT_NLU";
-        var replies = replyMapper.Map(plan, finalizedTurn, session, emitSkillActions).Select(map => new WebSocketReply
+        var replies = ResponsePlanToSocketMessagesMapper.Map(plan, finalizedTurn, session, emitSkillActions).Select(map => new WebSocketReply
         {
             Text = map.Text,
             DelayMs = map.DelayMs
@@ -332,10 +332,11 @@ public sealed class WebSocketTurnFinalizationService(
     {
         var turnState = session.TurnState;
         return turnState.AwaitingTurnCompletion &&
-               turnState.SawListen &&
-               turnState.SawContext &&
-               turnState.BufferedAudioChunkCount >= AutoFinalizeMinBufferedAudioChunks &&
-               turnState.BufferedAudioBytes >= AutoFinalizeMinBufferedAudioBytes;
+               turnState is
+               {
+                   SawListen: true, SawContext: true, BufferedAudioChunkCount: >= AutoFinalizeMinBufferedAudioChunks,
+                   BufferedAudioBytes: >= AutoFinalizeMinBufferedAudioBytes
+               };
     }
 
     private static string? ExtractDataPayload(string? text)
diff --git a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Audio/ExternalProcessRunner.cs b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Audio/ExternalProcessRunner.cs
index edacf89..06db1d1 100644
--- a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Audio/ExternalProcessRunner.cs
+++ b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Audio/ExternalProcessRunner.cs
@@ -32,11 +32,9 @@ public sealed class ExternalProcessRunner : IExternalProcessRunner
         var stdOut = await stdOutTask;
         var stdErr = await stdErrTask;
 
-        if (process.ExitCode != 0)
-        {
-            throw new InvalidOperationException($"External process '{fileName}' failed with exit code {process.ExitCode}: {stdErr}");
-        }
-
-        return new ExternalProcessResult(process.ExitCode, stdOut, stdErr);
+        return process.ExitCode != 0
+            ? throw new InvalidOperationException(
+                $"External process '{fileName}' failed with exit code {process.ExitCode}: {stdErr}")
+            : new ExternalProcessResult(process.ExitCode, stdOut, stdErr);
     }
 }
diff --git a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Audio/LocalWhisperCppBufferedAudioSttStrategy.cs b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Audio/LocalWhisperCppBufferedAudioSttStrategy.cs
index 94a9bb2..06d26bf 100644
--- a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Audio/LocalWhisperCppBufferedAudioSttStrategy.cs
+++ b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Audio/LocalWhisperCppBufferedAudioSttStrategy.cs
@@ -92,7 +92,7 @@ public sealed class LocalWhisperCppBufferedAudioSttStrategy(
             byte[][] jagged => jagged,
             IReadOnlyList<byte[]> typed => typed,
             IEnumerable<byte[]> enumerable => enumerable.ToArray(),
-            JsonElement jsonElement when jsonElement.ValueKind == JsonValueKind.Array => jsonElement.EnumerateArray()
+            JsonElement { ValueKind: JsonValueKind.Array } jsonElement => jsonElement.EnumerateArray()
                 .Where(static item => item.ValueKind == JsonValueKind.Array)
                 .Select(static item => item.EnumerateArray().Select(static b => (byte)b.GetInt32()).ToArray())
                 .ToArray(),
@@ -128,12 +128,7 @@ public sealed class LocalWhisperCppBufferedAudioSttStrategy(
             .Where(static line => !string.IsNullOrWhiteSpace(line))
             .ToArray();
 
-        if (timecoded.Length > 0)
-        {
-            return string.Join(" ", timecoded).Trim();
-        }
-
-        return string.Join(" ", lines).Trim();
+        return timecoded.Length > 0 ? string.Join(" ", timecoded).Trim() : string.Join(" ", lines).Trim();
     }
 
     private static void TryDelete(string path)
diff --git a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Audio/OggOpusAudioNormalizer.cs b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Audio/OggOpusAudioNormalizer.cs
index 6603e73..a8f371e 100644
--- a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Audio/OggOpusAudioNormalizer.cs
+++ b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Audio/OggOpusAudioNormalizer.cs
@@ -72,12 +72,9 @@ internal static class OggOpusAudioNormalizer
         }
 
         var expectedLength = 27 + pageSegments + payloadLength;
-        if (buffer.Length < expectedLength)
-        {
-            throw new InvalidOperationException("Buffered Ogg page payload was truncated.");
-        }
-
-        return new ParsedOggPage(BinaryPrimitives.ReadUInt64LittleEndian(buffer.AsSpan(6, 8)));
+        return buffer.Length < expectedLength
+            ? throw new InvalidOperationException("Buffered Ogg page payload was truncated.")
+            : new ParsedOggPage(BinaryPrimitives.ReadUInt64LittleEndian(buffer.AsSpan(6, 8)));
     }
 
     private static uint ComputeCrc(byte[] buffer)
diff --git a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Telemetry/CapturePathResolver.cs b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Telemetry/CapturePathResolver.cs
index 48c67d5..45b14c2 100644
--- a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Telemetry/CapturePathResolver.cs
+++ b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Telemetry/CapturePathResolver.cs
@@ -22,7 +22,7 @@ internal static class CapturePathResolver
         }
 
         var directory = new DirectoryInfo(Path.GetFullPath(startPath));
-        if (!directory.Exists && directory.Parent is not null)
+        if (directory is { Exists: false, Parent: not null })
         {
             directory = directory.Parent;
         }
diff --git a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Telemetry/FileWebSocketTelemetrySink.cs b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Telemetry/FileWebSocketTelemetrySink.cs
index e7bb10e..cee4010 100644
--- a/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Telemetry/FileWebSocketTelemetrySink.cs
+++ b/OpenJibo/src/Jibo.Cloud/dotnet/src/Jibo.Cloud.Infrastructure/Telemetry/FileWebSocketTelemetrySink.cs
@@ -42,22 +42,18 @@ public sealed class FileWebSocketTelemetrySink(
 
     public Task RecordInboundAsync(WebSocketMessageEnvelope envelope, CloudSession session, string? messageType, CancellationToken cancellationToken = default)
     {
-        if (!options.Value.Enabled)
-        {
-            return Task.CompletedTask;
-        }
-
-        return WriteRecordAsync(BuildRecord("message_in", envelope, session, messageType, "in", null, null), cancellationToken);
+        return !options.Value.Enabled
+            ? Task.CompletedTask
+            : WriteRecordAsync(BuildRecord("message_in", envelope, session, messageType, "in", null, null),
+                cancellationToken);
     }
 
     public Task RecordTurnEventAsync(WebSocketMessageEnvelope envelope, CloudSession session, string eventType, IReadOnlyDictionary<string, object?> details, CancellationToken cancellationToken = default)
     {
-        if (!options.Value.Enabled)
-        {
-            return Task.CompletedTask;
-        }
-
-        return WriteRecordAsync(BuildRecord(eventType, envelope, session, null, "internal", null, details), cancellationToken);
+        return !options.Value.Enabled
+            ? Task.CompletedTask
+            : WriteRecordAsync(BuildRecord(eventType, envelope, session, null, "internal", null, details),
+                cancellationToken);
     }
 
     public async Task RecordOutboundAsync(WebSocketMessageEnvelope envelope, CloudSession session, IReadOnlyList<WebSocketReply> replies, CancellationToken cancellationToken = default)
diff --git a/OpenJibo/src/Playground/Program.cs b/OpenJibo/src/Playground/Program.cs
index 4294429..4c6cca0 100644
--- a/OpenJibo/src/Playground/Program.cs
+++ b/OpenJibo/src/Playground/Program.cs
@@ -177,6 +177,8 @@ while (!cts.IsCancellationRequested)
     }
 }
 
+return;
+
 static string PickBestUtterance(List<AsrUtterance>? utterances)
 {
     if (utterances == null || utterances.Count == 0)
@@ -201,7 +203,7 @@ static string NormalizeUtterance(string? text)
 
     // Very light cleanup for occasional weird leading duplication like "wWhat"
     if (s.Length >= 2 && char.ToLowerInvariant(s[0]) == char.ToLowerInvariant(s[1]))
-        s = s.Substring(1);
+        s = s[1..];
 
     return s;
 }
@@ -216,10 +218,7 @@ static string BuildReply(string heard)
     if (text.Contains("hello") || text.Contains("hi"))
         return "Hello! I heard you loud and clear.";
 
-    if (text.Contains("your name"))
-        return "I am Jibo, running with a local demo bridge.";
-
-    return $"You said: {heard}";
+    return text.Contains("your name") ? "I am Jibo, running with a local demo bridge." : $"You said: {heard}";
 }
 
 public sealed class AsrEvent
diff --git a/OpenJibo/tests/Jibo.Cloud.Tests/WebSockets/FileWebSocketTelemetrySinkTests.cs b/OpenJibo/tests/Jibo.Cloud.Tests/WebSockets/FileWebSocketTelemetrySinkTests.cs
index 34ed462..46297d6 100644
--- a/OpenJibo/tests/Jibo.Cloud.Tests/WebSockets/FileWebSocketTelemetrySinkTests.cs
+++ b/OpenJibo/tests/Jibo.Cloud.Tests/WebSockets/FileWebSocketTelemetrySinkTests.cs
@@ -98,9 +98,12 @@ public sealed class FileWebSocketTelemetrySinkTests : IDisposable
         {
             Token = "token-relative",
             HostName = "neo-hub.jibo.com",
-            Path = "/listen"
+            Path = "/listen",
+            TurnState =
+            {
+                TransId = "trans-relative"
+            }
         };
-        session.TurnState.TransId = "trans-relative";
 
         await sink.RecordConnectionOpenedAsync(envelope, session);
         await sink.RecordOutboundAsync(envelope, session, [new WebSocketReply { Text = """{"type":"LISTEN"}""" }]);
diff --git a/OpenJibo/tests/Jibo.Cloud.Tests/WebSockets/LocalWhisperCppBufferedAudioSttStrategyTests.cs b/OpenJibo/tests/Jibo.Cloud.Tests/WebSockets/LocalWhisperCppBufferedAudioSttStrategyTests.cs
index 56141ba..c131bcf 100644
--- a/OpenJibo/tests/Jibo.Cloud.Tests/WebSockets/LocalWhisperCppBufferedAudioSttStrategyTests.cs
+++ b/OpenJibo/tests/Jibo.Cloud.Tests/WebSockets/LocalWhisperCppBufferedAudioSttStrategyTests.cs
@@ -105,8 +105,8 @@ public sealed class LocalWhisperCppBufferedAudioSttStrategyTests
 
             if (string.Equals(fileName, "ffmpeg", StringComparison.OrdinalIgnoreCase))
             {
-                var outputPath = arguments.Last();
-                File.WriteAllBytes(outputPath, [0x52, 0x49, 0x46, 0x46]);
+                var outputPath = arguments[^1];
+                File.WriteAllBytes(outputPath, "RIFF"u8);
                 return Task.FromResult(new ExternalProcessResult(0, string.Empty, string.Empty));
             }