fix(notify): keep live listen events active when disabled (#2952)

Co-authored-by: houseme <housemecn@gmail.com>

crates/notify/src/global.rs

@@ -38,6 +38,20 @@ pub async fn initialize(config: Config) -> Result<(), NotificationError> {
     }
 }
 
+/// Initialize the global notification system only for live in-process consumers.
+///
+/// This does not load configured notification targets or bucket rules. It exists so
+/// ListenBucketNotification clients can receive live events even when external
+/// notification targets are disabled.
+pub fn initialize_live_events() -> Result<(), NotificationError> {
+    let system = NotificationSystem::new(Config::new());
+
+    match NOTIFICATION_SYSTEM.set(Arc::new(system)) {
+        Ok(_) => Ok(()),
+        Err(_) => Err(NotificationError::Lifecycle(LifecycleError::AlreadyInitialized)),
+    }
+}
+
 /// Returns a handle to the global NotificationSystem instance.
 /// Return None if the system has not been initialized.
 pub fn notification_system() -> Option<Arc<NotificationSystem>> {

crates/notify/src/lib.rs

@@ -32,7 +32,7 @@ pub mod stream;
 pub use error::{LifecycleError, NotificationError};
 pub use event::{Event, EventArgs, EventArgsBuilder};
 pub use global::{
-    initialize, is_notification_system_initialized, notification_metrics_snapshot, notification_system,
+    initialize, initialize_live_events, is_notification_system_initialized, notification_metrics_snapshot, notification_system,
     notification_target_metrics, notifier_global,
 };
 pub use integration::{NotificationMetricSnapshot, NotificationSystem, NotificationTargetMetricSnapshot};