Send a push notification via Bark to an iOS device. Use this to notify the user when: (1) Tasks are completed and need user attention, (2) Errors occur requiring user intervention, (3) User input or decisions are needed, (4) Testing or verification is required, (5) Long-running operations finish. Choose appropriate 'level' based on urgency: 'critical' for urgent issues, 'timeSensitive' for important updates, 'active' for general notifications.

Send multiple push notifications via Bark to multiple iOS devices. Use this for batch operations like: (1) Notifying multiple team members about project completion, (2) Sending progress updates to different stakeholders, (3) Broadcasting important announcements. Each notification can have different priority levels based on recipient needs.

Check the health status of a Bark server. Use this to: (1) Verify notification system is working before important operations, (2) Troubleshoot notification delivery issues, (3) Monitor system health during automated workflows. Call this proactively to ensure reliable user communication.