Implement Error Count Tracking and Notification for ArticleSummaryNotice Command

[coderabbitai]

This issue tracks the implementation of functionality mentioned in a TODO comment within the file. The task involves incrementing a dedicated error count upon exceptions and using this count to inform Slack notifications.

The need for this enhancement was discussed in the context of a pull request: #8 and a specific comment: #8 (comment)

Implementing this feature will improve the robustness of the notification dispatch process by allowing for better error tracking and handling.