Question
Greenfield notification fan-out service in Go: an event (e.g. 'order shipped') fans out to a user's channels — email, SMS, push, in-app — each with its own provider and per-channel user preferences and quiet hours. You're directing an AI agent. Lay out the build plan: how you model the fan-out, the delivery guarantees per channel, retry/dedup, and acceptance criteria. What does a careless 'send notifications to all the user's channels' prompt miss?
Treat the AI’s output as a draft to verify, not an answer to trust. Name the specific flaw and the input that triggers it, say how you’d catch it — tests, edge cases, reading critically — and how you’d re-prompt or decompose to get it right.
Vibe coding: describe the solution in plain language (or narrate it) and the coach grades your approach. Generating runnable code from your description is coming next.