[dotnet-port-fixes] Prefer terminal workflow outputs in collected responses

[github-actions]

Summary

Aligned workflow-as-agent collection with the upstream .NET fix from microsoft/agent-framework#6212 so non-streaming Collect() responses now prefer designated terminal workflow outputs over intermediate hosted-agent updates when both are present. The Go change stays internal to workflow/agentworkflow: it tracks terminal output-derived updates separately during collection, preserves existing streaming behavior, and adds a regression test covering intermediate hosted-agent outputs followed by a designated terminal workflow output.

Upstream references:

• .NET: Honor terminal workflow outputs in Workflow.AsAIAgent responses agent-framework#6212
• microsoft/agent-framework@d5f2c77
• microsoft/agent-framework@d5f2c77

Ported .NET PRs

• .NET: Honor terminal workflow outputs in Workflow.AsAIAgent responses agent-framework#6212 - honor designated terminal workflow outputs when building workflow-as-agent responses

Breaking Changes

No.

Tests and Examples

• Ran go test ./workflow/agentworkflow
• Added TestNew_CollectPrefersTerminalWorkflowOutputOverIntermediateHostedAgentUpdates
• Updated TestNew_IncludeOutputsInResponse to assert streaming visibility while collected responses prefer terminal workflow outputs

Notes

• This port intentionally does not broaden Go's existing IncludeOutputsInResponse contract for generic workflow outputs; it only realigns final collected response selection.
• No exported Go symbols were added or changed.

Generated by .NET to Go Fixes and Test Porting Agent · 1.3K AIC · ⌖ 29.9 AIC · ⊞ 21.7K · ◷

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Show patch preview (329 of 329 lines)

From aa4d2d0e0fb27b273e110a936a49f63dc7ba160b Mon Sep 17 00:00:00 2001
From: "github-actions[bot]" <github-actions[bot]@users.noreply.github.com>
Date: Mon, 20 Jul 2026 03:43:36 +0000
Subject: [PATCH] [dotnet-port-fixes] Prefer terminal workflow outputs in
 collected responses

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 workflow/agentworkflow/message_merger.go |  31 +++++++
 workflow/agentworkflow/workflow.go       |  51 +++++++----
 workflow/agentworkflow/workflow_test.go  | 107 ++++++++++++++++++++++-
 3 files changed, 172 insertions(+), 17 deletions(-)

diff --git a/workflow/agentworkflow/message_merger.go b/workflow/agentworkflow/message_merger.go
index df7bb5ce8..29fe5f1c3 100644
--- a/workflow/agentworkflow/message_merger.go
+++ b/workflow/agentworkflow/message_merger.go
@@ -88,6 +88,37 @@ func (m *messageMerger) ComputeMerged(primaryResponseID string, primaryAgentID s
 	return response
 }
 
+type collectedResponseMergeState struct {
+	allUpdates             *messageMerger
+	terminalWorkflowOutput *messageMerger
+	hasTerminalOutput      bool
+}
+
+func newCollectedResponseMergeState() *collectedResponseMergeState {
+	return &collectedResponseMergeState{
+		allUpdates:             newMessageMerger(),
+		terminalWorkflowOutput: newMessageMerger(),
+	}
+}
+
+func (s *collectedResponseMergeState) AddUpdate(update *agent.ResponseUpdate, terminalWorkflowOutput bool) {
+	if s == nil {
+		return
+	}
+	s.allUpdates.AddUpdate(update)
+	if terminalWorkflowOutput {
+		s.terminalWorkflowOutput.AddUpdate(update)
+		s.hasTerminalOutput = true
+	}
+}
+
+func (s *collectedResponseMergeState) ComputeMerged(primaryResponseID string, primaryAgentID string, primaryAgentName string) *agent.Response {
+	if s != nil && s.hasTerminalOutput {
+		return s.terminalWorkflowOutput.ComputeMerged(primaryResponseID, primaryAgentID, primaryAgentName)
+	}
+	return s.allUpdates.ComputeMerged(primaryResponseID, primaryAgentID, primaryAgentName)
+}
+
 type responseMe
... (truncated)

[michelle-clayton-work]

Pull request #583 is linked to this issue and will close it when merged.