From 141798efed411f874b126ce8afff411b3e6f3a0b Mon Sep 17 00:00:00 2001
From: YeonGyu-Kim <code.yeon.gyu@gmail.com>
Date: Sun, 12 Apr 2026 00:42:52 +0900
Subject: [PATCH] refactor(background-agent): standardize loop detector null
 guards

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
---
 src/features/background-agent/loop-detector.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/features/background-agent/loop-detector.ts b/src/features/background-agent/loop-detector.ts
index ecfcf23f3..6120a168c 100644
--- a/src/features/background-agent/loop-detector.ts
+++ b/src/features/background-agent/loop-detector.ts
@@ -36,7 +36,7 @@ export function recordToolCall(
   settings: CircuitBreakerSettings,
   toolInput?: Record<string, unknown> | null
 ): ToolCallWindow {
-  if (toolInput === undefined || toolInput === null) {
+  if (toolInput == null) {
     return {
       lastSignature: `${toolName}::__unknown-input__`,
       consecutiveCount: 1,
@@ -78,7 +78,7 @@ export function createToolCallSignature(
   toolName: string,
   toolInput?: Record<string, unknown> | null
 ): string {
-  if (toolInput === undefined || toolInput === null) {
+  if (toolInput == null) {
     return toolName
   }
   if (Object.keys(toolInput).length === 0) {