From ba50e86563cac49a4db2f964607b1cad8eecb358 Mon Sep 17 00:00:00 2001
From: Teknium <127238744+teknium1@users.noreply.github.com>
Date: Fri, 19 Jun 2026 07:06:13 -0700
Subject: [PATCH] fix: open dispatcher lock file with explicit utf-8 encoding

ruff (unspecified-encoding) and the Windows-footgun checker both flag
open() in text mode without encoture=. Keep text mode (the Windows lock
path in _try_acquire_file_lock writes a str newline) and pass
encoding='utf-8'.
---
 gateway/kanban_watchers.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gateway/kanban_watchers.py b/gateway/kanban_watchers.py
index 123b8aafdd5..21753054f01 100644
--- a/gateway/kanban_watchers.py
+++ b/gateway/kanban_watchers.py
@@ -51,7 +51,7 @@ def _acquire_singleton_lock(lock_path) -> "tuple[Optional[object], str]":
         return None, "unavailable"
     try:
         Path(lock_path).parent.mkdir(parents=True, exist_ok=True)
-        handle = open(str(lock_path), "a+")
+        handle = open(str(lock_path), "a+", encoding="utf-8")
     except OSError:
         return None, "unavailable"
     if not _try_acquire_file_lock(handle):