For your requirement, the bell icon is definitely one option. However, if a provider notification is triggered, the user will also receive an email notification.

In my opinion, the best approach would be to update the Work Notes of the records using your existing background script.

For long-running scripts that update specific records, you can log the completion status directly in the processed record.

• Execution: Update the work_notes field with a completion message.
• Visibility: This creates a permanent audit trail and allows users to easily review the update the next time they open the record.