From fdb45b8eedb7ba34b8649a78e1663048f0132301 Mon Sep 17 00:00:00 2001
From: Devid HW <devid.wahid@gmail.com>
Date: Sun, 19 Apr 2026 09:21:00 +0700
Subject: [PATCH] fix: redirect tracing logs to stderr to keep stdout clean for
 MCP JSON

tracing_subscriber::fmt::init() defaults to stdout, contaminating the
MCP JSON-RPC stream and causing Claude Code and Windsurf to fail the
initialize handshake with "failed to reconnect".

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 src/main.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main.rs b/src/main.rs
index b4e47f3..287ed0c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -78,7 +78,9 @@ pub struct ToolCapabilities {
 
 #[tokio::main]
 async fn main() -> Result<()> {
-    tracing_subscriber::fmt::init();
+    tracing_subscriber::fmt()
+        .with_writer(std::io::stderr)
+        .init();
     
     let cli = Cli::parse();