fix: memory leak hunting and reconnecting on data error

electron/ipc/system.ts

@@ -62,6 +62,9 @@ import { listRunningProcessNames } from '../process-list';
 import { detectActiveGame } from '../game-detection';
 
 const DEFAULT_MIME_TYPE = 'application/octet-stream';
+const MAX_ACTIVE_DESKTOP_NOTIFICATIONS = 20;
+const activeDesktopNotifications = new Set<Notification>();
+const desktopNotificationCleanups = new Map<Notification, () => void>();
 const FILE_CLIPBOARD_FORMATS = [
   'x-special/gnome-copied-files',
   'text/uri-list',
@@ -399,9 +402,16 @@ export function setupSystemHandlers(): void {
           icon: getWindowIconPath(),
           silent: true
         });
-
-        notification.on('click', () => {
+        const cleanup = () => {
+          notification.removeListener('click', handleClick);
+          notification.removeListener('close', cleanup);
+          notification.removeListener('failed', cleanup);
+          activeDesktopNotifications.delete(notification);
+          desktopNotificationCleanups.delete(notification);
+        };
+        const handleClick = () => {
           if (!mainWindow) {
+            cleanup();
             return;
           }
 
@@ -414,7 +424,26 @@ export function setupSystemHandlers(): void {
           }
 
           mainWindow.focus();
-        });
+          cleanup();
+          notification.close();
+        };
+
+        notification.on('click', handleClick);
+        notification.once('close', cleanup);
+        notification.once('failed', cleanup);
+        activeDesktopNotifications.add(notification);
+        desktopNotificationCleanups.set(notification, cleanup);
+
+        while (activeDesktopNotifications.size > MAX_ACTIVE_DESKTOP_NOTIFICATIONS) {
+          const oldestNotification = activeDesktopNotifications.values().next().value;
+
+          if (!oldestNotification) {
+            break;
+          }
+
+          desktopNotificationCleanups.get(oldestNotification)?.();
+          oldestNotification.close();
+        }
 
         notification.show();
       } catch {