fix: Manual compaction does not update context window. (#6682)

crates/goose/src/agents/execute_commands.rs

@@ -86,7 +86,7 @@ impl Agent {
             .conversation
             .ok_or_else(|| anyhow!("Session has no conversation"))?;
 
-        let (compacted_conversation, _usage) = compact_messages(
+        let (compacted_conversation, usage) = compact_messages(
             self.provider().await?.as_ref(),
             session_id,
             &conversation,
@@ -98,6 +98,9 @@ impl Agent {
             .replace_conversation(session_id, &compacted_conversation)
             .await?;
 
+        self.update_session_metrics(session_id, session.schedule_id, &usage, true)
+            .await?;
+
         Ok(Some(Message::assistant().with_system_notification(
             SystemNotificationType::InlineMessage,
             "Compaction complete",