From 1360cec546cf96347fb52d8d125662e07ad0bdff Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Mon, 4 May 2026 05:47:03 +0100
Subject: [PATCH] fix: narrow diagnostic session tail

---
 src/logging/diagnostic-session-context.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/logging/diagnostic-session-context.ts b/src/logging/diagnostic-session-context.ts
index 4194be4619f..5f450b62571 100644
--- a/src/logging/diagnostic-session-context.ts
+++ b/src/logging/diagnostic-session-context.ts
@@ -106,7 +106,7 @@ export function readLastAssistantFromSessionFile(filePath: string | undefined):
     return undefined;
   }
   const tail = readTailText(filePath);
-  if (!tail.text) {
+  if (!tail?.text) {
     return undefined;
   }
   const lines = tail.text.split(/\r?\n/).filter(Boolean);