Monitor webhook functionality in production

[TooAngel]

Implement monitoring and logging for webhook functionality in production environment.

Context:

• Real-time webhook system is now operational
• Need visibility into webhook processing performance
• Production monitoring will help identify issues early

Acceptance Criteria:

• Add comprehensive logging for webhook events
• Monitor webhook response times and success rates
• Set up alerts for webhook failures
• Dashboard for webhook processing metrics
• Documentation for webhook monitoring setup

Priority: Medium