diff --git a/adapters/native/register.go b/adapters/native/register.go
index 2b064c8..d129716 100644
--- a/adapters/native/register.go
+++ b/adapters/native/register.go
@@ -138,6 +138,8 @@ func toNative(req squad.ExecRequest) exec.Request {
 			prev(squad.ProcessEvent{
 				Type: ev.Type, Text: ev.Text, Tool: ev.Tool, Detail: ev.Detail,
 				PromptTokens: ev.PromptTokens, CompletionTokens: ev.CompletionTokens,
+				LastPromptTokens: ev.LastPromptTokens, LastCompletionTokens: ev.LastCompletionTokens,
+				CacheReadTokens: ev.CacheReadTokens, CacheWriteTokens: ev.CacheWriteTokens,
 			})
 		}
 	}
diff --git a/deps/agent-native b/deps/agent-native
index 2eccf3f..1ac21c6 160000
--- a/deps/agent-native
+++ b/deps/agent-native
@@ -1 +1 @@
-Subproject commit 2eccf3f6f5f2a1c6085fc641df5b4fcb86cc5a12
+Subproject commit 1ac21c68d4e2c2728d92d6db67a30ff06e0066d3
diff --git a/squad/port.go b/squad/port.go
index 8662ba0..6a1fff9 100644
--- a/squad/port.go
+++ b/squad/port.go
@@ -64,12 +64,17 @@ type ExecBudget struct {
 
 // ProcessEvent 是过程帧。
 type ProcessEvent struct {
-	Type             string
-	Text             string
-	Tool             string
-	Detail           string
-	PromptTokens     int
-	CompletionTokens int
+	Type                 string
+	Text                 string
+	Tool                 string
+	Detail               string
+	PromptTokens         int
+	CompletionTokens     int
+	// 以下在 Type=usage 时填写（N3 WP6：上一请求与缓存命中拆分）。
+	LastPromptTokens     int
+	LastCompletionTokens int
+	CacheReadTokens      int
+	CacheWriteTokens     int
 }
 
 // ExecResult 是一次步骤执行的终态。