Generate Acceptance Criteria

Write detailed acceptance criteria for the following user story.

USER STORY:
"As a [role], I want [goal], so that [reason]"

CONTEXT:
- Feature area: [Where in the app/product]
- Platforms: [iOS (Swift/SwiftUI) / Android (Kotlin/Compose) / Both]
- Current behavior: [What happens today, if anything]

ACCEPTANCE CRITERIA FORMAT:
Use Given/When/Then (Gherkin) syntax:

Given [precondition]
When [action]
Then [expected result]

Please generate:
1. Happy path scenarios (the main success flow)
2. Alternative paths (valid but less common flows)
3. Error scenarios (what happens when things go wrong)
4. Boundary conditions (limits, empty states, maximums)
5. For each scenario, note whether it's a MUST (launch blocker) or SHOULD (enhancement)