Configure Rate-Limited Queue Processing for HTTP Webhook Enrollment Tasks (Safe Retries)

To configure rate-limited queue processing for HTTP webhook enrollment and shipment tasks, place the HTTP cron task behind a durable work queue. Workers must enforce the receiver's rate limit and persist idempotency records before acknowledging successful delivery. Retries should be handled by the queue, while duplicate prevention remains an application responsibility. This structure ensures slow subscribers delay only their own work, preventing a single HTTP request from holding up other subscribers during delivery recovery.