Update create/invite-member: Include user_profile in responses for member-related endpoints. This way users can see a name / email address instead of some opaque identifier.
Update trigger/members: Include user_profile in response.
Update trigger/members: Fix user_profile selector.
Update trigger/members: Add user_profile to sample data.
Update trigger/members: Fix user_profile sample data.
Fix #2: Add field validation during authentication.