chore: import upstream snapshot with attribution

dotnet/samples/03-workflows/Declarative/ConfirmInput/ConfirmInput.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFrameworks>net10.0</TargetFrameworks>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <InjectIsExternalInitOnLegacy>true</InjectIsExternalInitOnLegacy>
+    <InjectSharedFoundryAgents>true</InjectSharedFoundryAgents>
+    <InjectSharedWorkflowsExecution>true</InjectSharedWorkflowsExecution>
+    <InjectSharedWorkflowsSettings>true</InjectSharedWorkflowsSettings>
+  </PropertyGroup>
+  
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Configuration" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Binder" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" />
+    <PackageReference Include="Microsoft.Extensions.Logging" />
+  </ItemGroup>
+  
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.Workflows.Declarative\Microsoft.Agents.AI.Workflows.Declarative.csproj" />
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.Workflows.Declarative.Foundry\Microsoft.Agents.AI.Workflows.Declarative.Foundry.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Include="ConfirmInput.yaml">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+  
+</Project>

dotnet/samples/03-workflows/Declarative/ConfirmInput/ConfirmInput.yaml

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+#
+# This workflow demonstrates how to use the Question action
+# to request user input and confirm it matches the original input.
+#
+# Note: This workflow doesn't make use of any agents.
+#
+kind: Workflow
+trigger:
+
+  kind: OnConversationStart
+  id: workflow_demo
+  actions:
+  
+    # Capture original input
+    - kind: SetVariable
+      id: set_project
+      variable: Local.OriginalInput
+      value: =System.LastMessage.Text
+
+    # Request input from user
+    - kind: Question
+      id: question_confirm
+      alwaysPrompt: false
+      autoSend: false
+      property: Local.ConfirmedInput
+      prompt:
+        kind: Message
+        text:
+            - "CONFIRM:"
+      entity:
+        kind: StringPrebuiltEntity
+
+    # Confirm input
+    - kind: ConditionGroup
+      id: check_completion
+      conditions:
+
+        # Didn't match
+        - condition: =Local.OriginalInput <> Local.ConfirmedInput
+          id: check_confirm
+          actions:
+
+            - kind: SendActivity
+              id: sendActivity_mismatch
+              activity: |-
+                "{Local.ConfirmedInput}" does not match the original input of "{Local.OriginalInput}". Please try again.
+
+            - kind: GotoAction
+              id: goto_again
+              actionId: question_confirm
+
+      # Confirmed
+      elseActions:
+        - kind: SendActivity
+          id: sendActivity_confirmed
+          activity: |-
+            You entered:
+            {Local.OriginalInput}
+
+            Confirmed input:
+            {Local.ConfirmedInput}

dotnet/samples/03-workflows/Declarative/ConfirmInput/Program.cs

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+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.Extensions.Configuration;
+using Shared.Workflows;
+
+namespace Demo.Workflows.Declarative.ConfirmInput;
+
+/// <summary>
+/// Demonstrate how to use the question action to request user input
+/// and confirm it matches the original input.
+/// </summary>
+/// <remarks>
+/// See the README.md file in the parent folder (../README.md) for detailed
+/// information about the configuration required to run this sample.
+/// </remarks>
+internal sealed class Program
+{
+    public static async Task Main(string[] args)
+    {
+        // Initialize configuration
+        IConfiguration configuration = Application.InitializeConfig();
+        Uri foundryEndpoint = new(configuration.GetValue(Application.Settings.FoundryEndpoint));
+
+        // Get input from command line or console
+        string workflowInput = Application.GetInput(args);
+
+        // Create the workflow factory.  This class demonstrates how to initialize a
+        // declarative workflow from a YAML file. Once the workflow is created, it
+        // can be executed just like any regular workflow.
+        WorkflowFactory workflowFactory = new("ConfirmInput.yaml", foundryEndpoint);
+
+        // Execute the workflow:  The WorkflowRunner demonstrates how to execute
+        // a workflow, handle the workflow events, and providing external input.
+        // This also includes the ability to checkpoint workflow state and how to
+        // resume execution.
+        WorkflowRunner runner = new();
+        await runner.ExecuteAsync(workflowFactory.CreateWorkflow, workflowInput);
+    }
+}