- PaginatedResult[T] generic wrapping nested {items, pagination: {next_cursor}} shape
- Convenience properties .next_cursor and .has_next_page
- Package __init__.py exports all models, errors, and PaginatedResult
- SyncAPIClient/AsyncAPIClient intentionally excluded from public API
- Tests verify pagination with ServerUser and Team types
- BaseUser and ServerUser with camelCase aliases and millis-to-datetime properties
- Team, ServerTeam, TeamMemberProfile, TeamInvitation with timestamp conversions
- ActiveSession with GeoInfo nested model
- ContactChannel and TeamPermission/ProjectPermission
- Tests for user and team model parsing, inheritance, and field conversion
- Test StackAuthError base class storage and string representation
- Test all 13 category subclasses inherit from StackAuthError
- Test from_response() dispatch for known and unknown error codes
- Test StackAuthModel config and millis conversion
- Package skeleton with pyproject.toml (stubs only, tests expected to fail)