Function should_retry 

pub fn should_retry(
    _spec_id: &str,
    retry_state: &RetryState,
    error_log: &str,
    config: &FailureConfig,
) -> Result<RetryDecision>

Determine whether a failed spec should be retried based on retry state, error log and config.

Arguments

• spec_id - The spec ID (for error messages, currently unused)
• retry_state - Current retry state with attempt count
• error_log - The error log content to scan for retryable patterns
• config - Failure configuration with retry settings and patterns

Returns

• Ok(RetryDecision::Retry(delay)) - Should retry after the delay
• Ok(RetryDecision::PermanentFailure(reason)) - Permanent failure, don’t retry
• Err(_) - Configuration error

Edge Cases

• Empty or missing error log → PermanentFailure
• max_retries = 0 → First failure is permanent
• No pattern match → PermanentFailure
• Backoff overflow → Capped at 1 hour
• Multiple pattern matches → Still retryable (OR logic)
• Exceeded max_retries → PermanentFailure