Question
You're directing an AI agent to internationalize an existing React app: extract hardcoded strings into a message catalog, wrap them with the i18n library already in the repo, and handle pluralization and number/date formatting for an initial set of three locales. Write the spec that gets this right the first time. What does a careless 'add i18n to this app' prompt get wrong?
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.