bump aiperf to 61a9ed80: per-lane start-token counts in TrajectorySource log

cquil11 · claude · cquil11 · commit f8b85c9eef75 · 2026-05-18T22:34:18.000-05:00
Adds Turn.input_length / TurnMetadata.input_length and threads weka
proxy-token counts through to the TrajectorySource summary log so each
lane shows the cumulative context size at warmup-start (not just turn
index). Backward-compatible — other loaders unaffected.

Co-Authored-By: Claude Opus 4.7 &lt;noreply@anthropic.com&gt;
diff --git a/utils/aiperf b/utils/aiperf
@@ -1 +1 @@
-Subproject commit 2f30ea862801f0d85dcef7716e0ab59ed93953fb
+Subproject commit 61a9ed808196c69584b7438da20d3571402493af
