[dotnet-code] Consolidate compaction group predicates

[github-actions]

Summary

Consolidated repeated compaction group predicates into unexported MessageGroup helpers. This keeps the Go MessageIndex aggregation paths closer to the .NET CompactionMessageIndex predicate shape while preserving existing behavior and avoiding public API changes.

.NET Reference

• dotnet/src/Microsoft.Agents.AI/Compaction/CompactionMessageGroup.cs - group state such as IsExcluded and summary classification metadata.
• dotnet/src/Microsoft.Agents.AI/Compaction/CompactionMessageIndex.cs - index aggregation predicates over included and raw/non-summary groups.

Public API and Behavior

No public Go API changed. No intentional behavior change was made.

Tests

• go test ./agent/compaction

Notes

Rejected candidates from the random .NET sample:

• dotnet/src/Microsoft.Agents.AI.Workflows/ProtocolBuilder.cs maps to public Go protocol builder behavior, so cleanup risked API-facing churn.
• dotnet/src/Microsoft.Agents.AI.Workflows/Checkpointing/EdgeInfo.cs maps to public Go checkpoint edge metadata with different serialization constraints, so no safe tiny internal-only change was obvious.
• dotnet/src/Microsoft.Agents.AI.Workflows/RequestInfoEvent.cs already has a minimal direct Go counterpart, so there was no meaningful structural cleanup to make.

Generated by .NET-to-Go Code Portability Refactoring Agent · gpt55 · 89.3 AIC · ⌖ 16.9 AIC · ⊞ 23.2K · ◷

---

Note

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Show patch preview (113 of 113 lines)

From 1dcc3e763eb074beb84f368ad72bce66d6962dfd Mon Sep 17 00:00:00 2001
From: "github-actions[bot]" <github-actions[bot]@users.noreply.github.com>
Date: Mon, 10 Aug 2026 22:35:43 +0000
Subject: [PATCH] Consolidate compaction group predicates

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 agent/compaction/group.go | 10 +++++++++-
 agent/compaction/index.go | 16 ++++++++--------
 2 files changed, 17 insertions(+), 9 deletions(-)

diff --git a/agent/compaction/group.go b/agent/compaction/group.go
index 6b0584f0a..c1f2f8261 100644
--- a/agent/compaction/group.go
+++ b/agent/compaction/group.go
@@ -67,8 +67,16 @@ func newMessageGroup(kind GroupKind, messages []*message.Message, byteCount, tok
 	}
 }
 
+func (group *MessageGroup) isIncluded() bool {
+	return !group.IsExcluded
+}
+
 func (group *MessageGroup) isIncludedNonSystem() bool {
-	return !group.IsExcluded && group.Kind != GroupKindSystem
+	return group.isIncluded() && group.Kind != GroupKindSystem
+}
+
+func (group *MessageGroup) isRaw() bool {
+	return group.Kind != GroupKindSummary
 }
 
 func cloneTurnIndex(turnIndex *int) *int {
diff --git a/agent/compaction/index.go b/agent/compaction/index.go
index 4b2f6e6d5..b69b60d1b 100644
--- a/agent/compaction/index.go
+++ b/agent/compaction/index.go
@@ -182,7 +182,7 @@ func (index *MessageIndex) AddGroup(kind GroupKind, messages []*message.Message,
 func (index *MessageIndex) IncludedMessages() []*message.Message {
 	var messages []*message.Message
 	for _, group := range index.Groups {
-		if !group.IsExcluded {
+		if group.isIncluded() {
 			messages = append(messages, group.Messages...)
 		}
 	}
@@ -232,7 +232,7 @@ func (index *MessageIndex) TotalTokenCount() int {
 func (index *MessageIndex) IncludedGroupCount() int {
 	var total int
 	for _, group := range index.Groups {
-		if !group.IsExcluded {
+		if group.isIncluded() {
 			total++
 		}
 	}
@@ -243,7 +243,7 @@ func (index *MessageIndex) IncludedGroupCount() int {
 func (index *MessageIn
... (truncated)