fix: resolve DBus timeout crash by patching pystray

src/notifier.py

@@ -29,11 +29,9 @@ def __init__(self, app_name="Claude Code Usage Monitor",
             session_thresholds: List of threshold percentages for session (default [50, 75, 90])
             weekly_thresholds: List of threshold percentages for weekly (default to session_thresholds)
         """
-        # Initialize desktop-notifier
-        self.notifier = DesktopNotifier(
-            app_name=app_name,
-            notification_limit=10
-        )
+        self.app_name = app_name
+        self.notifier = None
+        self._notifier_init_attempted = False
 
         # Configure thresholds
         self.session_thresholds = session_thresholds if session_thresholds is not None else [50, 75, 90]
@@ -248,6 +246,20 @@ async def _send_notification(self, title: str, body: str, urgency: Urgency):
             body: Notification body text
             urgency: Urgency level
         """
+        if not self._notifier_init_attempted:
+            self._notifier_init_attempted = True
+            try:
+                self.notifier = DesktopNotifier(
+                    app_name=self.app_name,
+                    notification_limit=10
+                )
+            except Exception as e:
+                print(f"Warning: Failed to initialize desktop notifications: {e}", file=sys.stderr)
+                self.notifier = None
+
+        if self.notifier is None:
+            return
+
         try:
             await self.notifier.send(
                 title=title,

src/tray.py

@@ -17,6 +17,20 @@
 
 import pystray
 
+# Monkey patch pystray's internal Notifier to prevent DBus timeout on Linux
+# pystray's gtk and appindicator backends instantiate a synchronous DBus connection
+# to org.freedesktop.Notifications, which can hang for 25s and crash on KDE/headless setups.
+# We don't use pystray's notify() anyway since we use desktop_notifier.
+try:
+    from pystray._util import notify_dbus
+    class DummyNotifier:
+        def __init__(self): pass
+        def notify(self, title, message, icon): pass
+        def hide(self): pass
+    notify_dbus.Notifier = DummyNotifier
+except ImportError:
+    pass
+
 from src.icon_generator import generate_gauge_icon
 from src.utils import format_time_until
 from src.config import get_access_token, UserConfig, get_config_path