[dotnet-port-fixes] Align compaction summary marker handling

[github-actions]

Summary

Align Go compaction summary detection with the upstream .NET fix for _is_summary metadata by accepting both native bool values and raw JSON boolean tokens when grouping assistant messages. Added parity tests that keep missing, false, null, and string token values as assistant text while recognizing true in both native and raw-token forms.

Upstream reference:

• microsoft/agent-framework@e677ccc — Fix CompactionMessageIndex.IsSummaryMessage
  microsoft/agent-framework@e677ccc

Ported .NET PRs

• .NET: Fix CompactionMessageIndex.IsSummaryMessage agent-framework#7042 - Fix CompactionMessageIndex.IsSummaryMessage for deserialized JSON token values

Breaking Changes

No.

Tests and Examples

• go test ./agent/compaction
• Added TestMessageIndex_SummaryPropertyKeyIsRespected
• No examples changed

Notes

Skipped broader recent upstream compaction/workflow changes because they were either already tracked in Go porting work or were larger than the narrow nightly PR target. This change is internal-only and does not modify exported Go symbols.

Generated by .NET to Go Fixes and Test Porting Agent · 939.3 AIC · ⌖ 31.2 AIC · ⊞ 21.7K · ◷

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Show patch preview (104 of 104 lines)

From cb202eef1c53337e205d2995eb9716f5f5b2d472 Mon Sep 17 00:00:00 2001
From: "github-actions[bot]" <github-actions[bot]@users.noreply.github.com>
Date: Tue, 14 Jul 2026 03:39:56 +0000
Subject: [PATCH] [dotnet-port-fixes] Align compaction summary marker handling

Support raw JSON _is_summary values in compaction message grouping and add parity tests for bool and raw-token cases.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 agent/compaction/compaction_test.go | 36 +++++++++++++++++++++++++++++
 agent/compaction/index.go           | 23 +++++++++++++++---
 2 files changed, 56 insertions(+), 3 deletions(-)

diff --git a/agent/compaction/compaction_test.go b/agent/compaction/compaction_test.go
index c98628543..b5cd613b1 100644
--- a/agent/compaction/compaction_test.go
+++ b/agent/compaction/compaction_test.go
@@ -67,6 +67,42 @@ func TestMessageIndex_GroupsToolCallsAtomically(t *testing.T) {
 	}
 }
 
+func TestMessageIndex_SummaryPropertyKeyIsRespected(t *testing.T) {
+	tests := []struct {
+		name     string
+		value    any
+		expected compaction.GroupKind
+	}{
+		{name: "missing", expected: compaction.GroupKindAssistantText},
+		{name: "bool false", value: false, expected: compaction.GroupKindAssistantText},
+		{name: "raw false", value: json.RawMessage(`false`), expected: compaction.GroupKindAssistantText},
+		{name: "raw null", value: json.RawMessage(`null`), expected: compaction.GroupKindAssistantText},
+		{name: "raw string", value: json.RawMessage(`"Unexpected string"`), expected: compaction.GroupKindAssistantText},
+		{name: "bool true", value: true, expected: compaction.GroupKindSummary},
+		{name: "raw true", value: json.RawMessage(`true`), expected: compaction.GroupKindSummary},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			msg := textMessage(message.RoleAssistant, "Hello")
+			if tt.name != "missing" {
+				msg.AdditionalProperties = map[string]any{
+					"_is_summary": tt.value,
+				}
+			}
+
+			in
... (truncated)