Artifact: RFC Review Log — Event Bus for Shipment Notifications

RFC review log, every open question resolved or deferred -- exercises co-05.

Review log -- RFC: Choosing an Event Bus for Shipment Notifications

• Dinar (SRE): "Who's on call for Kafka if it goes down at 2am? We don't have Kafka runbooks today." → Resolved: on-call ownership added to Open Questions (still undecided, explicitly tracked, not silently dropped from the review).
• Priya (Notification Worker owner): "Does this change the Notification Worker's consumer code much?" → Resolved: added a "Migration" section to the RFC describing the consumer-side change as a bounded, one-sprint effort.
• Bayu (tech lead): "7-day retention -- have we priced that?" → Deferred: retention cost estimate tracked as a follow-up ticket, explicitly listed in Open Questions rather than blocking acceptance of the core Kafka-vs-SQS decision.

Status: Accepted (2026-02-24), with two items carried forward in Open Questions: Kafka operational ownership, and final retention-period cost.