## ADDED Requirements

### Requirement: Trigger Execution Retry
The system SHALL retry failed trigger executions with exponential backoff to handle transient failures.

#### Scenario: Trigger succeeds after retry
- **WHEN** trigger execution fails due to transient error
- **THEN** system retries after 1 second delay
- **WHEN** retry succeeds
- **THEN** trigger is marked as successful in execution log

#### Scenario: Trigger exhausts retries
- **WHEN** trigger execution fails 3 consecutive times
- **THEN** system marks trigger execution as permanently failed
- **THEN** system sends alert notification to system administrators
- **THEN** execution log contains all retry attempts with error details

#### Scenario: Non-retryable error
- **WHEN** trigger fails with validation or permission error (4xx)
- **THEN** system does not retry and marks as failed immediately
- **THEN** error is logged with appropriate categorization