From b59464230a2cf5be24227b56c05f752befd40369 Mon Sep 17 00:00:00 2001
From: yinwm <yinwm@outlook.com>
Date: Fri, 13 Feb 2026 02:15:56 +0800
Subject: [PATCH] perf(cron): use read lock for concurrent reads in addJob

---
 pkg/tools/cron.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkg/tools/cron.go b/pkg/tools/cron.go
index 5669271..3f2042e 100644
--- a/pkg/tools/cron.go
+++ b/pkg/tools/cron.go
@@ -122,10 +122,10 @@ func (t *CronTool) Execute(ctx context.Context, args map[string]interface{}) *To
 }
 
 func (t *CronTool) addJob(args map[string]interface{}) *ToolResult {
-	t.mu.Lock()
+	t.mu.RLock()
 	channel := t.channel
 	chatID := t.chatID
-	t.mu.Unlock()
+	t.mu.RUnlock()
 
 	if channel == "" || chatID == "" {
 		return ErrorResult("no session context (channel/chat_id not set). Use this tool in an active conversation.")