From 0679167cc763fb32b8abdb832cf31556ddef309e Mon Sep 17 00:00:00 2001
From: ismeth <ufukaltinok@gmail.com>
Date: Fri, 20 Feb 2026 14:19:10 +0100
Subject: [PATCH] fix(agent-switch): correct off-by-one in fallback message cap

---
 src/hooks/agent-switch/hook.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/hooks/agent-switch/hook.ts b/src/hooks/agent-switch/hook.ts
index 2084eee40..2336225f8 100644
--- a/src/hooks/agent-switch/hook.ts
+++ b/src/hooks/agent-switch/hook.ts
@@ -114,7 +114,7 @@ export function createAgentSwitchHook(ctx: PluginInput) {
         processedFallbackMessages.add(marker)
 
         // Prevent unbounded growth of the Set
-        if (processedFallbackMessages.size > MAX_PROCESSED_FALLBACK_MARKERS) {
+        if (processedFallbackMessages.size >= MAX_PROCESSED_FALLBACK_MARKERS) {
           const iterator = processedFallbackMessages.values()
           const oldest = iterator.next().value
           if (oldest) {