.NET: Add orchestration ID to durable agent entity state

[philliphoff]

Description

Updates durable agent calls made within the context of an orchestration so that the orchestration ID gets propagated to the agent's underlying entity state. This allows tools that analyze agent state (such as the DTS Dashboard) to correlate individual requests to an agent back to the orchestration from which the request was made. (Currently that correlation can be done only one way, from the orchestration to the agent, but not vice-versa.)

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the Contribution Guidelines
• All unit tests pass, and I have added new tests where possible
• Is this a breaking change? If yes, add "[BREAKING]" prefix to the title of the PR.

[Copilot]

Pull Request Overview

This PR adds orchestration ID tracking to durable agent entity state, enabling bidirectional correlation between orchestrations and agent requests. This allows tools like the DTS Dashboard to trace individual agent requests back to their originating orchestration.

• Adds OrchestrationId property to capture the orchestration context when agents are invoked
• Updates the durable agent state schema version to 1.1.0 to reflect the backward-compatible change
• Includes comprehensive test coverage for both orchestration and non-orchestration scenarios

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
schemas/durable-agent-entity-state.json	Adds optional orchestrationId field to the agentRequest schema definition
dotnet/src/Microsoft.Agents.AI.DurableTask/RunRequest.cs	Adds internal OrchestrationId property to track orchestration context
dotnet/src/Microsoft.Agents.AI.DurableTask/State/DurableAgentStateRequest.cs	Adds OrchestrationId property and maps it from RunRequest during conversion
dotnet/src/Microsoft.Agents.AI.DurableTask/State/DurableAgentState.cs	Bumps schema version from 1.0.0 to 1.1.0 for the new optional field
dotnet/src/Microsoft.Agents.AI.DurableTask/DurableAIAgent.cs	Sets OrchestrationId from the orchestration context when creating agent requests
dotnet/tests/Microsoft.Agents.AI.DurableTask.UnitTests/State/DurableAgentStateRequestTests.cs	Adds unit test for serialization/deserialization of OrchestrationId
dotnet/tests/Microsoft.Agents.AI.DurableTask.IntegrationTests/AgentEntityTests.cs	Adds integration test validating OrchestrationId is set during orchestrations and null otherwise
dotnet/src/Microsoft.Agents.AI.DurableTask/Microsoft.Agents.AI.DurableTask.csproj	Grants integration tests access to internal members via InternalsVisibleTo

[Copilot]

Pull Request Overview

Copilot reviewed 8 out of 8 changed files in this pull request and generated no new comments.