From 535b8d0d37b52c56963f2dcb93603e375cd5c1e2 Mon Sep 17 00:00:00 2001
From: Marius <marius@kilocode.ai>
Date: Thu, 30 Apr 2026 14:07:58 +0200
Subject: [PATCH] docs(ui): explain reasoning state retention (#9738)

---
 packages/kilo-ui/src/components/message-part.tsx | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/kilo-ui/src/components/message-part.tsx b/packages/kilo-ui/src/components/message-part.tsx
index 934ef5cb11f..d0a405c446e 100644
--- a/packages/kilo-ui/src/components/message-part.tsx
+++ b/packages/kilo-ui/src/components/message-part.tsx
@@ -1350,6 +1350,9 @@ const userOpened = new Set<string>()
 const MAX_REASONING_STATE = 1000
 
 function rememberReasoningState(set: Set<string>, id: string) {
+  // Remember the most recent manual display choices without growing forever.
+  // If an old id is evicted, only its open/collapsed override is forgotten;
+  // the reasoning block still renders normally if it appears again.
   if (set.has(id)) set.delete(id)
   set.add(id)
   if (set.size <= MAX_REASONING_STATE) return