Advanced Terraform State Drift Auto-Remediation

Act as a Site Reliability Engineer. Design a rigid, automated security workflow specifically engineered to detect and violently remediate configuration drift (e.g., unauthorized manual AWS Console 'ClickOps') targeting a [CRITICAL_RESOURCE_TYPE] (e.g., a Production Security Group). Engineer a CI/CD cron job that blindly executes a `terraform plan -detailed-exitcode` against the remote [STATE_FILE_BACKEND] every 15 minutes. If the exit code mathematically proves architectural drift exists, the pipeline must instantly transmit a high-severity JSON payload to the [ALERTING_CHANNEL] (e.g., PagerDuty or Slack). Write a technical manifesto debating the catastrophic risks of implementing 'auto-remediation' (an automated `terraform apply` silently reverting the manual change) versus a strict 'alert-only' mode in a highly volatile production environment.