fix(monitoring): Export Alert class from monitoring module

Author: VoxHash

db_storage_manager/monitoring/__init__.py

@@ -4,13 +4,14 @@
 
 from .monitor import DatabaseMonitor
 from .metrics import MetricsCollector
-from .alerts import AlertManager
+from .alerts import AlertManager, Alert
 from .health import HealthChecker
 
 __all__ = [
     "DatabaseMonitor",
     "MetricsCollector",
     "AlertManager",
+    "Alert",
     "HealthChecker",
 ]