refactor: rename sidecar host to Aryx

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

sidecar/src/Aryx.AgentHost/Services/ITurnWorkflowRunner.cs

@@ -0,0 +1,17 @@
+using Aryx.AgentHost.Contracts;
+
+namespace Aryx.AgentHost.Services;
+
+public interface ITurnWorkflowRunner
+{
+    Task<IReadOnlyList<ChatMessageDto>> RunTurnAsync(
+        RunTurnCommandDto command,
+        Func<TurnDeltaEventDto, Task> onDelta,
+        Func<AgentActivityEventDto, Task> onActivity,
+        Func<ApprovalRequestedEventDto, Task> onApproval,
+        CancellationToken cancellationToken);
+
+    Task ResolveApprovalAsync(
+        ResolveApprovalCommandDto command,
+        CancellationToken cancellationToken);
+}