Fix build errors: remove duplicate base class members, update renamed APIs

- Remove duplicate OutputLog, WriteInputAsync, CreateTestTimeoutCts, etc. from
  ConsoleAppSamplesValidation (already in SamplesValidationBase)
- Update AddFanInEdge -> AddFanInBarrierEdge in workflow samples
- Update GetNewSessionAsync -> CreateSessionAsync in workflow samples
- Update SourceId -> ExecutorId (obsolete) in workflow samples

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

Author: kshyju

dotnet/samples/04-hosting/DurableWorkflows/AzureFunctions/02_ConcurrentWorkflow/Program.cs

@@ -34,7 +34,7 @@
 Workflow workflow = new WorkflowBuilder(parseQuestion)
     .WithName("ExpertReview")
     .AddFanOutEdge(parseQuestion, [physicist, chemist])
-    .AddFanInEdge([physicist, chemist], aggregator)
+    .AddFanInBarrierEdge([physicist, chemist], aggregator)
     .Build();
 
 using IHost app = FunctionsApplication

dotnet/samples/04-hosting/DurableWorkflows/AzureFunctions/03_WorkflowHITL/Program.cs

@@ -40,7 +40,7 @@
     .AddEdge(createRequest, managerApproval)
     .AddEdge(managerApproval, prepareFinanceReview)
     .AddFanOutEdge(prepareFinanceReview, [budgetApproval, complianceApproval])
-    .AddFanInEdge([budgetApproval, complianceApproval], reimburse)
+    .AddFanInBarrierEdge([budgetApproval, complianceApproval], reimburse)
     .Build();
 
 using IHost app = FunctionsApplication

dotnet/samples/04-hosting/DurableWorkflows/ConsoleApps/02_ConcurrentWorkflow/Program.cs

@@ -56,7 +56,7 @@
 Workflow workflow = new WorkflowBuilder(parseQuestion)
     .WithName("ExpertReview")
     .AddFanOutEdge(parseQuestion, [physicist, chemist])
-    .AddFanInEdge([physicist, chemist], aggregator)
+    .AddFanInBarrierEdge([physicist, chemist], aggregator)
     .Build();
 
 // Configure and start the host

dotnet/samples/04-hosting/DurableWorkflows/ConsoleApps/04_WorkflowAndAgents/Program.cs

@@ -54,7 +54,7 @@
 Workflow expertTeamWorkflow = new WorkflowBuilder(questionParser)
 .WithName("ExpertTeamReview")
 .AddFanOutEdge(questionParser, [biologist, physicist])
-.AddFanInEdge([biologist, physicist], responseAggregator)
+.AddFanInBarrierEdge([biologist, physicist], responseAggregator)
 .Build();
 
 Workflow chemistryWorkflow = new WorkflowBuilder(questionParser)
@@ -96,12 +96,12 @@
 Console.WriteLine("\n═══ DEMO 1: Direct Agent Conversation ═══\n");
 
 AIAgent biologistProxy = services.GetRequiredKeyedService<AIAgent>("Biologist");
-AgentSession session = await biologistProxy.GetNewSessionAsync();
+AgentSession session = await biologistProxy.CreateSessionAsync();
 AgentResponse response = await biologistProxy.RunAsync("What is photosynthesis?", session);
 Console.WriteLine($"🧬 Biologist: {response.Text}\n");
 
 AIAgent chemistProxy = services.GetRequiredKeyedService<AIAgent>("Chemist");
-session = await chemistProxy.GetNewSessionAsync();
+session = await chemistProxy.CreateSessionAsync();
 response = await chemistProxy.RunAsync("What is a chemical bond?", session);
 Console.WriteLine($"🧪 Chemist: {response.Text}\n");
 

dotnet/samples/04-hosting/DurableWorkflows/ConsoleApps/05_WorkflowEvents/Program.cs

@@ -116,7 +116,7 @@ static async Task RunWorkflowWithStreamingAsync(string orderId, Workflow workflo
                 break;
 
             case WorkflowOutputEvent e:
-                WriteColored($"    [Output] {e.SourceId}", ConsoleColor.DarkGray);
+                WriteColored($"    [Output] {e.ExecutorId}", ConsoleColor.DarkGray);
                 break;
 
             // Workflow completion

dotnet/samples/04-hosting/DurableWorkflows/ConsoleApps/06_WorkflowSharedState/Executors.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using Microsoft.Agents.AI.Workflows;
 

dotnet/samples/04-hosting/DurableWorkflows/ConsoleApps/06_WorkflowSharedState/Program.cs

@@ -93,7 +93,7 @@
             switch (evt)
             {
                 case WorkflowOutputEvent e:
-                    Console.WriteLine($"  [Output] {e.SourceId}: {e.Data}");
+                    Console.WriteLine($"  [Output] {e.ExecutorId}: {e.Data}");
                     break;
 
                 case DurableWorkflowCompletedEvent e:

dotnet/samples/04-hosting/DurableWorkflows/ConsoleApps/08_WorkflowHITL/Executors.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using Microsoft.Agents.AI.Workflows;
 

dotnet/samples/04-hosting/DurableWorkflows/ConsoleApps/08_WorkflowHITL/Program.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 // This sample demonstrates a Human-in-the-Loop (HITL) workflow using Durable Tasks.
 //
@@ -43,7 +43,7 @@
     .AddEdge(createRequest, managerApproval)
     .AddEdge(managerApproval, prepareFinanceReview)
     .AddFanOutEdge(prepareFinanceReview, [budgetApproval, complianceApproval])
-    .AddFanInEdge([budgetApproval, complianceApproval], reimburse)
+    .AddFanInBarrierEdge([budgetApproval, complianceApproval], reimburse)
     .Build();
 
 IHost host = Host.CreateDefaultBuilder(args)