fix(cli): report cumulative total_tokens in stream-json/json output (#8910)

Signed-off-by: Trinity <trinity@multica.ai>
Signed-off-by: Bright Zheng <bzqzheng@gmail.com>
Signed-off-by: Douwe Osinga <douwe@squareup.com>
Co-authored-by: Douwe Osinga <douwe@squareup.com>

crates/goose-cli/src/session/mod.rs

@@ -1501,10 +1501,9 @@ impl CliSession {
             .await
     }
 
-    // Get the session's total token usage
     pub async fn get_total_token_usage(&self) -> Result<Option<i32>> {
         let metadata = self.get_session().await?;
-        Ok(metadata.total_tokens)
+        Ok(metadata.accumulated_total_tokens)
     }
 
     /// Display enhanced context usage with session totals