[Prod] Add circuit breakers for failure prevention

[iAziz786]

Description

Prevent cascade failures

Acceptance Criteria

• Implement circuit breaker pattern for external calls
• Add configurable failure thresholds
• Support half-open state testing
• Implement circuit breaker metrics
• Add circuit breaker status reporting

Implementation Hints

• Use circuit breaker library or implement custom
• Add exponential backoff for recovery
• Implement failure rate calculation

Dependencies

Performance metrics, Rate limiting