From b005f01c1304e1f491f58d7a6036ec21df47e69e Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Thu, 28 May 2026 04:20:01 -0400
Subject: [PATCH] fix: ignore leading transcript bytes in tail scan

---
 src/auto-reply/reply/agent-runner-memory.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/auto-reply/reply/agent-runner-memory.ts b/src/auto-reply/reply/agent-runner-memory.ts
index 5a6df75989f..4815b1bd3cc 100644
--- a/src/auto-reply/reply/agent-runner-memory.ts
+++ b/src/auto-reply/reply/agent-runner-memory.ts
@@ -560,7 +560,7 @@ async function readLastNonzeroUsageFromSessionLog(logPath: string): Promise<Sess
     return usage
       ? {
           usage,
-          trailingBytes: Math.max(0, stat.size - Buffer.byteLength(leadingPartial, "utf8")),
+          trailingBytes: 0,
           byteSize: stat.size,
         }
       : { byteSize: stat.size };