From ce95148232d5cd9c5cf8acba7cae7689851f6326 Mon Sep 17 00:00:00 2001
From: xintaofei <itpkcn@gmail.com>
Date: Wed, 1 Apr 2026 17:29:01 +0800
Subject: [PATCH] fix: truncate_title panic on multi-byte UTF-8 strings

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 src-tauri/src/chat_channel/session_commands.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src-tauri/src/chat_channel/session_commands.rs b/src-tauri/src/chat_channel/session_commands.rs
index 04923dd..5545c36 100644
--- a/src-tauri/src/chat_channel/session_commands.rs
+++ b/src-tauri/src/chat_channel/session_commands.rs
@@ -928,9 +928,10 @@ fn resolve_agent_type(
 }
 
 fn truncate_title(s: &str) -> String {
-    if s.len() <= 80 {
+    if s.chars().count() <= 80 {
         s.to_string()
     } else {
-        format!("{}...", &s[..77])
+        let truncated: String = s.chars().take(77).collect();
+        format!("{truncated}...")
     }
 }