From 9ad7f64d9d9f760a15aab4779433c33128c7abd8 Mon Sep 17 00:00:00 2001
From: Eric Traut <etraut@openai.com>
Date: Mon, 18 May 2026 16:06:51 -0700
Subject: [PATCH] Clarify thread settings model updates

---
 codex-rs/core/src/session/handlers.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/codex-rs/core/src/session/handlers.rs b/codex-rs/core/src/session/handlers.rs
index 066ddbe2f2..3cacd168a7 100644
--- a/codex-rs/core/src/session/handlers.rs
+++ b/codex-rs/core/src/session/handlers.rs
@@ -307,6 +307,8 @@ async fn thread_settings_update(
         collaboration_mode
     } else {
         let state = sess.state.lock().await;
+        // Model and reasoning effort live in CollaborationMode settings today, so
+        // partial thread-settings updates refresh those fields on the active mode.
         state
             .session_configuration
             .collaboration_mode