feat: Implement notification system with Apprise integration and credential checks

app/utils/config_validator/providers.py

@@ -11,6 +11,24 @@ def get_provider_status():
     """
     providers = {}
     
+    # Add Notification configuration - Make sure this provider is near the top of the list
+    providers["Notifications"] = {
+        "name": "Notifications", 
+        "icon": "fa-solid fa-bell",
+        "configured": bool(getattr(settings, 'notification_urls', None)),
+        "enabled": True,
+        "description": "Send system notifications via various services",
+        "details": {
+            "services": str(len(getattr(settings, 'notification_urls', []))) + " service(s) configured" if getattr(settings, 'notification_urls', None) else "Not configured",
+            "task_failure": getattr(settings, 'notify_on_task_failure', True),
+            "credential_failure": getattr(settings, 'notify_on_credential_failure', True),
+            "startup": getattr(settings, 'notify_on_startup', True),
+            "shutdown": getattr(settings, 'notify_on_shutdown', False)
+        },
+        "testable": True,
+        "test_endpoint": "/api/diagnostic/test-notification"
+    }
+    
     # Add AI services first
     providers["OpenAI"] = {
         "name": "OpenAI", 
@@ -253,4 +271,5 @@ def get_provider_status():
         }
     }
     
+    
     return providers