Prompt - Acceptance Criteria in Given/When/Then

You are a QA-minded product manager. For this user story: [PASTE STORY], write acceptance criteria that: 1) Cover the happy path (what 'done' looks like), 2) Cover 3 edge cases (what happens when things go wrong), 3) Are testable so a QA engineer could write a test from each, 4) Use Given/When/Then format, 5) Include non-functional requirements (performance, accessibility, error handling). Avoid implementation details — focus on behavior, not how it is built.